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  • Android app crashes on emulator - logCat shows no errors

    - by David Miler
    I have just added the SherlockActionBar library to my android project. After some small changes (FragmentActivity - SherlockFragmentActivity, getActionBar() - getSupportActionBar(), imports) it all compiled nicely. After I run the app, however, the debugger stops, as though it had encountered an exception. However, there are no errors shown in the LogCat output. I just can't wrap my head around what's going on. Here is the logCat output after I terminate the app. 10-02 14:11:19.227: I/SystemUpdateService(174): UpdateTask at time 1349187079227 10-02 14:11:19.237: I/ActivityThread(328): Pub com.android.email.attachmentprovider: com.android.email.provider.AttachmentProvider 10-02 14:11:19.687: I/dalvikvm(81): Jit: resizing JitTable from 512 to 1024 10-02 14:11:19.809: D/MediaScannerService(150): start scanning volume internal: [/system/media] 10-02 14:11:20.047: V/AlarmClock(239): AlarmInitReceiver finished 10-02 14:11:20.087: I/ActivityManager(81): Start proc com.android.quicksearchbox for broadcast com.android.quicksearchbox/.SearchWidgetProvider: pid=346 uid=10012 gids={3003} 10-02 14:11:20.127: D/ExchangeService(320): !!! EAS ExchangeService, onStartCommand, startingUp = false, running = false 10-02 14:11:20.427: I/ActivityThread(346): Pub com.android.quicksearchbox.google: com.android.quicksearchbox.google.GoogleSuggestionProvider 10-02 14:11:20.497: I/ActivityThread(346): Pub com.android.quicksearchbox.shortcuts: com.android.quicksearchbox.ShortcutsProvider 10-02 14:11:20.657: I/ActivityManager(81): Start proc com.android.music for broadcast com.android.music/.MediaAppWidgetProvider: pid=358 uid=10028 gids={3003, 1015} 10-02 14:11:20.927: D/ExchangeService(320): !!! EAS ExchangeService, onCreate 10-02 14:11:20.967: D/dalvikvm(260): GC_CONCURRENT freed 213K, 6% free 6409K/6791K, paused 5ms+101ms 10-02 14:11:21.077: D/ExchangeService(320): !!! EAS ExchangeService, onStartCommand, startingUp = true, running = false 10-02 14:11:21.567: D/GTalkService(174): [ReonnectMgr] ### report Inet condition: status=false, networkType=0 10-02 14:11:21.587: D/ConnectivityService(81): reportNetworkCondition(0, 0) 10-02 14:11:21.597: D/ConnectivityService(81): Inet connectivity change, net=0, condition=0,mActiveDefaultNetwork=0 10-02 14:11:21.597: D/ConnectivityService(81): starting a change hold 10-02 14:11:21.697: D/GTalkService(174): [RawStanzaProvidersMgr] ##### searchProvidersFromIntent 10-02 14:11:21.697: D/GTalkService(174): [RawStanzaProvidersMgr] no intent receivers found 10-02 14:11:21.847: I/SystemUpdateService(174): cancelUpdate (empty URL) 10-02 14:11:21.847: E/TelephonyManager(174): Hidden constructor called more than once per process! 10-02 14:11:21.867: D/dalvikvm(174): GC_CONCURRENT freed 337K, 7% free 6561K/7047K, paused 5ms+4ms 10-02 14:11:21.917: D/GTalkService(174): [ReonnectMgr] ### report Inet condition: status=false, networkType=0 10-02 14:11:21.917: D/ConnectivityService(81): reportNetworkCondition(0, 0) 10-02 14:11:21.917: D/ConnectivityService(81): Inet connectivity change, net=0, condition=0,mActiveDefaultNetwork=0 10-02 14:11:21.917: D/ConnectivityService(81): currently in hold - not setting new end evt 10-02 14:11:21.990: E/TelephonyManager(174): Original: com.google.android.location, new: com.google.android.gsf 10-02 14:11:22.027: I/SystemUpdateService(174): removeAllDownloads (cancelUpdate) 10-02 14:11:22.127: D/dalvikvm(328): GC_CONCURRENT freed 205K, 6% free 6506K/6855K, paused 660ms+3ms 10-02 14:11:22.197: D/Eas Debug(320): Logging: 10-02 14:11:22.319: D/dalvikvm(81): GREF has increased to 401 10-02 14:11:22.947: D/ExchangeService(320): !!! EAS ExchangeService, onStartCommand, startingUp = true, running = false 10-02 14:11:23.130: D/Eas Debug(320): Logging: 10-02 14:11:23.307: I//system/bin/fsck_msdos(29): Attempting to allocate 2044 KB for FAT 10-02 14:11:23.560: I/ActivityManager(81): Starting: Intent { flg=0x10000000 cmp=com.google.android.gsf/.update.SystemUpdateInstallDialog } from pid 174 10-02 14:11:23.587: I/ActivityManager(81): Starting: Intent { flg=0x10000000 cmp=com.google.android.gsf/.update.SystemUpdateDownloadDialog } from pid 174 10-02 14:11:24.087: W/ActivityManager(81): Activity pause timeout for ActivityRecord{407c7320 com.android.launcher/com.android.launcher2.Launcher} 10-02 14:11:24.237: E/TelephonyManager(174): Hidden constructor called more than once per process! 10-02 14:11:24.237: E/TelephonyManager(174): Original: com.google.android.location, new: com.google.android.gsf 10-02 14:11:24.507: D/dalvikvm(174): GC_EXPLICIT freed 231K, 7% free 6596K/7047K, paused 4ms+6ms 10-02 14:11:24.607: D/ConnectivityService(81): Inet hold end, net=0, condition =0, published condition =0 10-02 14:11:24.607: D/ConnectivityService(81): no change in condition - aborting 10-02 14:11:24.707: D/dalvikvm(174): GC_EXPLICIT freed 17K, 7% free 6579K/7047K, paused 4ms+4ms 10-02 14:11:24.947: I//system/bin/fsck_msdos(29): ** Phase 2 - Check Cluster Chains 10-02 14:11:25.117: I//system/bin/fsck_msdos(29): ** Phase 3 - Checking Directories 10-02 14:11:25.128: I//system/bin/fsck_msdos(29): ** Phase 4 - Checking for Lost Files 10-02 14:11:25.167: I//system/bin/fsck_msdos(29): 12 files, 1044448 free (522224 clusters) 10-02 14:11:25.227: I/Vold(29): Filesystem check completed OK 10-02 14:11:25.227: I/Vold(29): Device /dev/block/vold/179:0, target /mnt/sdcard mounted @ /mnt/secure/staging 10-02 14:11:25.237: D/Vold(29): Volume sdcard state changing 3 (Checking) -> 4 (Mounted) 10-02 14:11:25.257: I/PackageManager(81): Updating external media status from unmounted to mounted 10-02 14:11:25.457: D/dalvikvm(303): GC_EXPLICIT freed 35K, 6% free 6242K/6595K, paused 3ms+312ms 10-02 14:11:25.987: D/ExchangeService(320): !!! EAS ExchangeService, onStartCommand, startingUp = true, running = false 10-02 14:11:26.157: D/MediaScanner(150): prescan time: 2905ms 10-02 14:11:26.167: D/MediaScanner(150): scan time: 148ms 10-02 14:11:26.167: D/MediaScanner(150): postscan time: 2ms 10-02 14:11:26.167: D/MediaScanner(150): total time: 3055ms 10-02 14:11:26.197: D/MediaScannerService(150): done scanning volume internal 10-02 14:11:26.237: D/MediaScannerService(150): start scanning volume external: [/mnt/sdcard] 10-02 14:11:26.497: D/dalvikvm(143): GC_EXPLICIT freed 234K, 8% free 7735K/8327K, paused 3ms+5ms 10-02 14:11:27.180: D/dalvikvm(143): GC_CONCURRENT freed 150K, 4% free 8004K/8327K, paused 7ms+3ms 10-02 14:11:27.397: D/dalvikvm(143): GC_FOR_ALLOC freed 96K, 6% free 8310K/8775K, paused 76ms 10-02 14:11:27.580: D/dalvikvm(143): GC_FOR_ALLOC freed 515K, 11% free 8135K/9095K, paused 79ms 10-02 14:11:27.829: D/dalvikvm(143): GC_CONCURRENT freed 3K, 5% free 8694K/9095K, paused 7ms+6ms 10-02 14:11:28.137: V/TLINE(143): new: android.text.TextLine@4065b280 10-02 14:11:28.527: D/dalvikvm(143): GC_CONCURRENT freed 729K, 10% free 8764K/9671K, paused 5ms+13ms 10-02 14:11:28.677: D/dalvikvm(143): GC_FOR_ALLOC freed 152K, 11% free 8683K/9671K, paused 99ms 10-02 14:11:28.717: I/dalvikvm-heap(143): Grow heap (frag case) to 11.434MB for 2975968-byte allocation 10-02 14:11:28.807: D/dalvikvm(143): GC_FOR_ALLOC freed 0K, 9% free 11589K/12615K, paused 84ms 10-02 14:11:29.159: D/dalvikvm(143): GC_CONCURRENT freed 197K, 7% free 12195K/12999K, paused 8ms+6ms 10-02 14:11:29.647: D/dalvikvm(143): GC_EXPLICIT freed 351K, 6% free 12790K/13511K, paused 8ms+17ms 10-02 14:11:29.717: I/SurfaceFlinger(32): Boot is finished (70768 ms) 10-02 14:11:29.877: I/ARMAssembler(32): generated scanline__00000177:03010104_00000002_00000000 [ 44 ipp] (66 ins) at [0x407c7290:0x407c7398] in 990662 ns 10-02 14:11:29.907: I/ARMAssembler(32): generated scanline__00000177:03515104_00000001_00000000 [ 73 ipp] (95 ins) at [0x407c73a0:0x407c751c] in 989381 ns 10-02 14:11:30.287: D/dalvikvm(174): GC_EXPLICIT freed 25K, 8% free 6554K/7047K, paused 4ms+32ms 10-02 14:11:30.380: D/dalvikvm(143): GC_EXPLICIT freed 349K, 6% free 13124K/13895K, paused 5ms+25ms 10-02 14:11:30.957: D/dalvikvm(143): GC_FOR_ALLOC freed 1069K, 10% free 13860K/15239K, paused 81ms 10-02 14:11:32.177: D/dalvikvm(150): GC_CONCURRENT freed 183K, 6% free 6438K/6791K, paused 5ms+4ms 10-02 14:11:32.187: W/ActivityManager(81): No content provider found for: 10-02 14:11:32.607: V/MediaScanner(150): pruneDeadThumbnailFiles... android.database.sqlite.SQLiteCursor@406724a8 10-02 14:11:32.617: V/MediaScanner(150): /pruneDeadThumbnailFiles... android.database.sqlite.SQLiteCursor@406724a8 10-02 14:11:32.640: W/ActivityManager(81): No content provider found for: 10-02 14:11:32.640: D/VoldCmdListener(29): asec list 10-02 14:11:32.647: I/PackageManager(81): No secure containers on sdcard 10-02 14:11:32.667: D/MediaScanner(150): prescan time: 107ms 10-02 14:11:32.667: D/MediaScanner(150): scan time: 89ms 10-02 14:11:32.667: D/MediaScanner(150): postscan time: 61ms 10-02 14:11:32.667: D/MediaScanner(150): total time: 257ms 10-02 14:11:32.697: W/PackageManager(81): Unknown permission android.permission.ADD_SYSTEM_SERVICE in package com.android.phone 10-02 14:11:32.707: W/PackageManager(81): Unknown permission com.android.smspush.WAPPUSH_MANAGER_BIND in package com.android.phone 10-02 14:11:32.737: W/PackageManager(81): Not granting permission android.permission.SEND_DOWNLOAD_COMPLETED_INTENTS to package com.android.browser (protectionLevel=2 flags=0x9be45) 10-02 14:11:32.737: W/PackageManager(81): Not granting permission android.permission.BIND_APPWIDGET to package com.android.widgetpreview (protectionLevel=3 flags=0x28be44) 10-02 14:11:32.767: W/PackageManager(81): Unknown permission android.permission.READ_OWNER_DATA in package com.android.exchange 10-02 14:11:32.778: W/PackageManager(81): Unknown permission android.permission.READ_OWNER_DATA in package com.android.email 10-02 14:11:32.788: W/PackageManager(81): Unknown permission com.android.providers.im.permission.READ_ONLY in package com.google.android.apps.maps 10-02 14:11:32.797: W/PackageManager(81): Not granting permission android.permission.DEVICE_POWER to package com.android.deskclock (protectionLevel=2 flags=0x8be45) 10-02 14:11:33.137: D/MediaScannerService(150): done scanning volume external 10-02 14:11:33.197: D/PackageParser(81): Scanning package: /data/app/vmdl257911298.tmp 10-02 14:11:33.837: I/InputReader(81): Device reconfigured: id=0, name='qwerty2', surface size is now 1024x800 10-02 14:11:34.097: D/dalvikvm(81): GC_CONCURRENT freed 12185K, 47% free 13966K/26311K, paused 8ms+23ms 10-02 14:11:36.798: I/TabletStatusBar(124): DISABLE_CLOCK: no 10-02 14:11:36.798: I/TabletStatusBar(124): DISABLE_NAVIGATION: no 10-02 14:11:37.348: I/ARMAssembler(32): generated scanline__00000177:03515104_00001001_00000000 [ 91 ipp] (114 ins) at [0x407c7520:0x407c76e8] in 919320 ns 10-02 14:11:37.598: I/TabletStatusBar(124): DISABLE_BACK: no 10-02 14:11:37.710: I/ActivityManager(81): Displayed com.android.launcher/com.android.launcher2.Launcher: +46s212ms 10-02 14:11:38.817: D/dalvikvm(143): GC_CONCURRENT freed 969K, 8% free 14867K/16007K, paused 4ms+10ms 10-02 14:11:39.437: I/dalvikvm(81): Jit: resizing JitTable from 1024 to 2048 10-02 14:11:40.267: D/dalvikvm(143): GC_FOR_ALLOC freed 2357K, 16% free 14395K/17031K, paused 80ms 10-02 14:11:40.717: D/dalvikvm(143): GC_EXPLICIT freed 742K, 16% free 14358K/17031K, paused 8ms+4ms 10-02 14:11:41.617: D/dalvikvm(81): GC_CONCURRENT freed 1955K, 48% free 13869K/26311K, paused 9ms+10ms 10-02 14:11:42.559: D/dalvikvm(81): GC_CONCURRENT freed 1830K, 48% free 13881K/26311K, paused 9ms+9ms 10-02 14:11:42.758: I/PackageManager(81): Removing non-system package:cz.trilimi.sfaui 10-02 14:11:42.758: I/ActivityManager(81): Force stopping package cz.trilimi.sfaui uid=10036 10-02 14:11:42.967: D/PackageManager(81): Scanning package cz.trilimi.sfaui 10-02 14:11:42.967: I/PackageManager(81): Package cz.trilimi.sfaui codePath changed from /data/app/cz.trilimi.sfaui-1.apk to /data/app/cz.trilimi.sfaui-2.apk; Retaining data and using new 10-02 14:11:42.967: I/PackageManager(81): Unpacking native libraries for /data/app/cz.trilimi.sfaui-2.apk 10-02 14:11:43.097: D/installd(35): DexInv: --- BEGIN '/data/app/cz.trilimi.sfaui-2.apk' --- 10-02 14:11:45.317: D/dalvikvm(391): DexOpt: load 434ms, verify+opt 1260ms 10-02 14:11:45.407: D/installd(35): DexInv: --- END '/data/app/cz.trilimi.sfaui-2.apk' (success) --- 10-02 14:11:45.407: W/PackageManager(81): Code path for pkg : cz.trilimi.sfaui changing from /data/app/cz.trilimi.sfaui-1.apk to /data/app/cz.trilimi.sfaui-2.apk 10-02 14:11:45.407: W/PackageManager(81): Resource path for pkg : cz.trilimi.sfaui changing from /data/app/cz.trilimi.sfaui-1.apk to /data/app/cz.trilimi.sfaui-2.apk 10-02 14:11:45.407: D/PackageManager(81): Activities: cz.trilimi.sfaui.ItemListActivity cz.trilimi.sfaui.ItemDetailActivity 10-02 14:11:45.427: I/ActivityManager(81): Force stopping package cz.trilimi.sfaui uid=10036 10-02 14:11:45.657: I/installd(35): move /data/dalvik-cache/data@[email protected]@classes.dex -> /data/dalvik-cache/data@[email protected]@classes.dex 10-02 14:11:45.657: D/PackageManager(81): New package installed in /data/app/cz.trilimi.sfaui-2.apk 10-02 14:11:45.997: I/ActivityManager(81): Force stopping package cz.trilimi.sfaui uid=10036 10-02 14:11:46.147: D/dalvikvm(143): GC_EXPLICIT freed 3K, 16% free 14356K/17031K, paused 10ms+9ms 10-02 14:11:46.237: D/PackageManager(81): generateServicesMap(android.accounts.AccountAuthenticator): 3 services unchanged 10-02 14:11:46.277: D/PackageManager(81): generateServicesMap(android.content.SyncAdapter): 5 services unchanged 10-02 14:11:46.337: D/PackageManager(81): generateServicesMap(android.accounts.AccountAuthenticator): 3 services unchanged 10-02 14:11:46.347: D/PackageManager(81): generateServicesMap(android.content.SyncAdapter): 5 services unchanged 10-02 14:11:46.437: D/dalvikvm(208): GC_EXPLICIT freed 258K, 7% free 6488K/6919K, paused 3ms+5ms 10-02 14:11:46.477: W/RecognitionManagerService(81): no available voice recognition services found 10-02 14:11:46.897: I/ActivityManager(81): Start proc com.svox.pico for broadcast com.svox.pico/.VoiceDataInstallerReceiver: pid=398 uid=10006 gids={} 10-02 14:11:47.087: I/ActivityThread(398): Pub com.svox.pico.providers.SettingsProvider: com.svox.pico.providers.SettingsProvider 10-02 14:11:47.138: D/GTalkService(174): [GTalkService.1] handlePackageInstalled: re-initialize providers 10-02 14:11:47.147: D/GTalkService(174): [RawStanzaProvidersMgr] ##### searchProvidersFromIntent 10-02 14:11:47.147: D/GTalkService(174): [RawStanzaProvidersMgr] no intent receivers found 10-02 14:11:47.718: I/AccountTypeManager(208): Loaded meta-data for 1 account types, 0 accounts in 186ms 10-02 14:11:48.377: D/dalvikvm(143): GC_CONCURRENT freed 1865K, 15% free 14513K/17031K, paused 7ms+4ms 10-02 14:11:48.917: D/dalvikvm(208): GC_CONCURRENT freed 219K, 6% free 6788K/7175K, paused 7ms+73ms 10-02 14:11:49.207: D/dalvikvm(143): GC_FOR_ALLOC freed 4558K, 31% free 11866K/17031K, paused 89ms 10-02 14:11:49.587: D/dalvikvm(143): GC_CONCURRENT freed 713K, 24% free 13010K/17031K, paused 5ms+4ms 10-02 14:11:49.967: D/dalvikvm(143): GC_CONCURRENT freed 1046K, 19% free 13922K/17031K, paused 5ms+4ms 10-02 14:11:50.437: D/dalvikvm(81): GC_EXPLICIT freed 898K, 47% free 13955K/26311K, paused 6ms+39ms 10-02 14:11:50.467: I/installd(35): unlink /data/dalvik-cache/data@[email protected]@classes.dex 10-02 14:11:50.477: D/AndroidRuntime(227): Shutting down VM 10-02 14:11:50.507: D/dalvikvm(227): GC_CONCURRENT freed 97K, 84% free 331K/2048K, paused 1ms+2ms 10-02 14:11:50.507: I/AndroidRuntime(227): NOTE: attach of thread 'Binder Thread #3' failed 10-02 14:11:50.517: D/jdwp(227): adbd disconnected 10-02 14:11:51.177: D/AndroidRuntime(410): >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<< 10-02 14:11:51.177: D/AndroidRuntime(410): CheckJNI is ON 10-02 14:11:51.897: D/AndroidRuntime(410): Calling main entry com.android.commands.am.Am 10-02 14:11:51.937: I/ActivityManager(81): Force stopping package cz.trilimi.sfaui uid=10036 10-02 14:11:51.937: I/ActivityManager(81): Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=cz.trilimi.sfaui/.ItemListActivity } from pid 410 10-02 14:11:51.968: W/WindowManager(81): Failure taking screenshot for (230x179) to layer 21005 10-02 14:11:51.997: I/ActivityManager(81): Start proc cz.trilimi.sfaui for activity cz.trilimi.sfaui/.ItemListActivity: pid=418 uid=10036 gids={} 10-02 14:11:52.007: D/AndroidRuntime(410): Shutting down VM 10-02 14:11:52.057: I/AndroidRuntime(410): NOTE: attach of thread 'Binder Thread #3' failed 10-02 14:11:52.097: D/dalvikvm(410): GC_CONCURRENT freed 98K, 83% free 360K/2048K, paused 1ms+0ms 10-02 14:11:52.097: D/jdwp(410): adbd disconnected 10-02 14:11:53.147: W/ActivityThread(418): Application cz.trilimi.sfaui is waiting for the debugger on port 8100... 10-02 14:11:53.207: I/System.out(418): Sending WAIT chunk 10-02 14:11:53.217: I/dalvikvm(418): Debugger is active 10-02 14:11:53.447: I/System.out(418): Debugger has connected 10-02 14:11:53.457: I/System.out(418): waiting for debugger to settle... 10-02 14:11:53.637: I/ARMAssembler(32): generated scanline__00000177:03515104_00001002_00000000 [ 87 ipp] (110 ins) at [0x407c76f0:0x407c78a8] in 598498 ns 10-02 14:11:53.660: I/System.out(418): waiting for debugger to settle... 10-02 14:11:53.857: I/System.out(418): waiting for debugger to settle... 10-02 14:11:54.057: I/System.out(418): waiting for debugger to settle... 10-02 14:11:54.257: I/System.out(418): waiting for debugger to settle... 10-02 14:11:54.317: V/TLINE(81): new: android.text.TextLine@4155dde8 10-02 14:11:54.467: I/System.out(418): waiting for debugger to settle... 10-02 14:11:54.667: I/System.out(418): waiting for debugger to settle... 10-02 14:11:54.870: I/System.out(418): waiting for debugger to settle... 10-02 14:11:55.027: D/dalvikvm(143): GC_EXPLICIT freed 900K, 16% free 14420K/17031K, paused 7ms+4ms 10-02 14:11:55.067: I/System.out(418): waiting for debugger to settle... 10-02 14:11:55.292: I/System.out(418): debugger has settled (1315) 10-02 14:12:02.008: W/ActivityManager(81): Launch timeout has expired, giving up wake lock! 10-02 14:12:02.971: W/ActivityManager(81): Activity idle timeout for ActivityRecord{4078c6b0 cz.trilimi.sfaui/.ItemListActivity} 10-02 14:12:08.359: D/ExchangeService(320): Received deviceId from Email app: androidc259148960 10-02 14:12:08.507: D/ExchangeService(320): Reconciling accounts... 10-02 14:16:11.437: D/SntpClient(81): request time failed: java.net.SocketException: Address family not supported by protocol 10-02 14:17:21.573: W/jdwp(418): Debugger is telling the VM to exit with code=1 10-02 14:17:21.573: I/dalvikvm(418): GC lifetime allocation: 8642 bytes 10-02 14:17:21.637: D/Zygote(33): Process 418 exited cleanly (1) 10-02 14:17:21.651: I/ActivityManager(81): Process cz.trilimi.sfaui (pid 418) has died. 10-02 14:17:21.847: D/dalvikvm(143): GC_EXPLICIT freed <1K, 16% free 14420K/17031K, paused 7ms+7ms 10-02 14:17:21.917: W/InputManagerService(81): Window already focused, ignoring focus gain of: com.android.internal.view.IInputMethodClient$Stub$Proxy@40bfbf28

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  • Problem running android HelloTabWidget example - NullPointerException on addTab()

    - by Poindextrose
    I've tried the Tab Layout example, and I've also fixed the few typos in the example (and added all the activities to the manifest). However, when I run it on the emulator I get a NullPointerException on the first line that says tabHost.addTab(spec); So my question, of course, is. What is wrong with the example that would cause this exception? I'm using Eclipse Galileo and set the target package as Android 1.5. So far I've had no other problems with the other examples on the android dev site. package com.example.hellotabwidget; import android.app.TabActivity; import android.content.Intent; import android.content.res.Resources; import android.os.Bundle; import android.widget.TabHost; public class HelloTabWidget extends TabActivity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) throws RuntimeException { super.onCreate(savedInstanceState); setContentView(R.layout.main); Resources res = getResources(); // Resource object to get Drawables TabHost tabHost = getTabHost(); // The activity TabHost TabHost.TabSpec spec; // Reusable TabSpec for each tab Intent intent; // Reusable Intent for each tab // Create an Intent to launch an Activity for the tab (to be reused) //final Context context = getApplicationContext(); intent = new Intent().setClass(this, ArtistsActivity.class); // Initialize a TabSpec for each tab and add it to the TabHost spec = tabHost.newTabSpec("artists").setIndicator("Artists", res.getDrawable(R.drawable.ic_tab_artists)) .setContent(intent); tabHost.addTab(spec); //******** NullPointerException after running this line // Do the same for the other tabs intent = new Intent().setClass(this, AlbumsActivity.class); spec = tabHost.newTabSpec("albums").setIndicator("Albums", res.getDrawable(R.drawable.ic_tab_artists)) .setContent(intent); tabHost.addTab(spec); intent = new Intent().setClass(this, SongsActivity.class); spec = tabHost.newTabSpec("songs").setIndicator("Songs", res.getDrawable(R.drawable.ic_tab_artists)) .setContent(intent); tabHost.addTab(spec); tabHost.setCurrentTabByTag("artists"); } } main.xml: <?xml version="1.0" encoding="utf-8"?> <TabHost xmlns:android="http://schemas.android.com/apk/res/android" android:id="@android:id/tabhost" android:layout_width="fill_parent" android:layout_height="fill_parent"> <LinearLayout android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" android:padding="5dp"> <TabWidget android:id="@android:id/tabs" android:layout_width="fill_parent" android:layout_height="wrap_content" /> <FrameLayout android:id="@android:id/tabcontent" android:layout_width="fill_parent" android:layout_height="fill_parent" android:padding="5dp" /> </LinearLayout> </TabHost>

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  • Why No android.content.SyncAdapter meta-data registering sync-adapter?

    - by mobibob
    I am following the SampleSyncAdapter and upon startup, it appears that my SyncAdapter is not configured correctly. It reports an error trying to load its meta-data. How can I isolate the problem? You can see the other accounts in the system that register correctly. Logcat: 12-21 17:10:50.667 W/PackageManager( 121): Unable to load service info ResolveInfo{4605dcd0 com.myapp.syncadapter.MySyncAdapter p=0 o=0 m=0x108000} 12-21 17:10:50.667 W/PackageManager( 121): org.xmlpull.v1.XmlPullParserException: No android.content.SyncAdapter meta-data 12-21 17:10:50.667 W/PackageManager( 121): at android.content.pm.RegisteredServicesCache.parseServiceInfo(RegisteredServicesCache.java:391) 12-21 17:10:50.667 W/PackageManager( 121): at android.content.pm.RegisteredServicesCache.generateServicesMap(RegisteredServicesCache.java:260) 12-21 17:10:50.667 W/PackageManager( 121): at android.content.pm.RegisteredServicesCache$1.onReceive(RegisteredServicesCache.java:110) 12-21 17:10:50.667 W/PackageManager( 121): at android.app.ActivityThread$PackageInfo$ReceiverDispatcher$Args.run(ActivityThread.java:892) 12-21 17:10:50.667 W/PackageManager( 121): at android.os.Handler.handleCallback(Handler.java:587) 12-21 17:10:50.667 W/PackageManager( 121): at android.os.Handler.dispatchMessage(Handler.java:92) 12-21 17:10:50.667 W/PackageManager( 121): at android.os.Looper.loop(Looper.java:123) 12-21 17:10:50.667 W/PackageManager( 121): at com.android.server.ServerThread.run(SystemServer.java:570) 12-21 17:10:50.747 D/Sources ( 294): Creating external source for type=com.skype.contacts.sync, packageName=com.skype.raider 12-21 17:10:50.747 D/Sources ( 294): Creating external source for type=com.twitter.android.auth.login, packageName=com.twitter.android 12-21 17:10:50.747 D/Sources ( 294): Creating external source for type=com.example.android.samplesync, packageName=com.example.android.samplesync 12-21 17:10:50.747 W/PackageManager( 121): Unable to load service info ResolveInfo{460504b0 com.myapp.syncadapter.MySyncAdapter p=0 o=0 m=0x108000} 12-21 17:10:50.747 W/PackageManager( 121): org.xmlpull.v1.XmlPullParserException: No android.content.SyncAdapter meta-data 12-21 17:10:50.747 W/PackageManager( 121): at android.content.pm.RegisteredServicesCache.parseServiceInfo(RegisteredServicesCache.java:391) 12-21 17:10:50.747 W/PackageManager( 121): at android.content.pm.RegisteredServicesCache.generateServicesMap(RegisteredServicesCache.java:260) 12-21 17:10:50.747 W/PackageManager( 121): at android.content.pm.RegisteredServicesCache$1.onReceive(RegisteredServicesCache.java:110) 12-21 17:10:50.747 W/PackageManager( 121): at android.app.ActivityThread$PackageInfo$ReceiverDispatcher$Args.run(ActivityThread.java:892) 12-21 17:10:50.747 W/PackageManager( 121): at android.os.Handler.handleCallback(Handler.java:587) 12-21 17:10:50.747 W/PackageManager( 121): at android.os.Handler.dispatchMessage(Handler.java:92) 12-21 17:10:50.747 W/PackageManager( 121): at android.os.Looper.loop(Looper.java:123) 12-21 17:10:50.747 W/PackageManager( 121): at com.android.server.ServerThread.run(SystemServer.java:570)

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  • Help in using shape drawable as my background xml

    - by n179911
    I really appreciate if someone can help me with using how to use shape drawable as my background xml for my view. This is what I tried: But I never get the color. Android always gives me black text on white background, regardless what color attribute I put. <?xml version="1.0" encoding="utf-8"?> <shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle"> <stroke android:width="1dip" android:color="#FBBB" /> <solid android:color="#6000"/> </shape> I tried , does not work <shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle" android:color="#6000> </shape> I tried , does not work <shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle" android:background="#6000> </shape> I google this is the limited result I found to try.

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  • android hellomap example giving exception

    - by avin
    06-14 22:13:33.992: ERROR/AndroidRuntime(331): Uncaught handler: thread main exiting due to uncaught exception 06-14 22:13:34.031: ERROR/AndroidRuntime(331): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example/com.example.HelloMap}: android.view.InflateException: Binary XML file line #6: Error inflating class com.google.android.maps.MapView 06-14 22:13:34.031: ERROR/AndroidRuntime(331): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2496) 06-14 22:13:34.031: ERROR/AndroidRuntime(331): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2512) 06-14 22:13:34.031: ERROR/AndroidRuntime(331): at android.app.ActivityThread.access$2200(ActivityThread.java:119) 06-14 22:13:34.031: ERROR/AndroidRuntime(331): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1863) 06-14 22:13:34.031: ERROR/AndroidRuntime(331): at android.os.Handler.dispatchMessage(Handler.java:99) 06-14 22:13:34.031: ERROR/AndroidRuntime(331): at android.os.Looper.loop(Looper.java:123) 06-14 22:13:34.031: ERROR/AndroidRuntime(331): at android.app.ActivityThread.main(ActivityThread.java:4363) 06-14 22:13:34.031: ERROR/AndroidRuntime(331): at java.lang.reflect.Method.invokeNative(Native Method) 06-14 22:13:34.031: ERROR/AndroidRuntime(331): at java.lang.reflect.Method.invoke(Method.java:521) 06-14 22:13:34.031: ERROR/AndroidRuntime(331): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) 06-14 22:13:34.031: ERROR/AndroidRuntime(331): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 06-14 22:13:34.031: ERROR/AndroidRuntime(331): at dalvik.system.NativeStart.main(Native Method) 06-14 22:13:34.031: ERROR/AndroidRuntime(331): Caused by: android.view.InflateException: Binary XML file line #6: Error inflating class com.google.android.maps.MapView 06-14 22:13:34.031: ERROR/AndroidRuntime(331): at android.view.LayoutInflater.createView(LayoutInflater.java:513) 06-14 22:13:34.031: ERROR/AndroidRuntime(331): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:565) 06-14 22:13:34.031: ERROR/AndroidRuntime(331): at android.view.LayoutInflater.rInflate(LayoutInflater.java:618) 06-14 22:13:34.031: ERROR/AndroidRuntime(331): at android.view.LayoutInflater.inflate(LayoutInflater.java:407) 06-14 22:13:34.031: ERROR/AndroidRuntime(331): at android.view.LayoutInflater.inflate(LayoutInflater.java:320) 06-14 22:13:34.031: ERROR/AndroidRuntime(331): at android.view.LayoutInflater.inflate(LayoutInflater.java:276) 06-14 22:13:34.031: ERROR/AndroidRuntime(331): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:198) 06-14 22:13:34.031: ERROR/AndroidRuntime(331): at android.app.Activity.setContentView(Activity.java:1622) 06-14 22:13:34.031: ERROR/AndroidRuntime(331): at com.example.HelloMap.onCreate(HelloMap.java:16) 06-14 22:13:34.031: ERROR/AndroidRuntime(331): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 06-14 22:13:34.031: ERROR/AndroidRuntime(331): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2459) 06-14 22:13:34.031: ERROR/AndroidRuntime(331): ... 11 more 06-14 22:13:34.031: ERROR/AndroidRuntime(331): Caused by: java.lang.reflect.InvocationTargetException 06-14 22:13:34.031: ERROR/AndroidRuntime(331): at com.google.android.maps.MapView.(MapView.java:237) 06-14 22:13:34.031: ERROR/AndroidRuntime(331): at java.lang.reflect.Constructor.constructNative(Native Method) 06-14 22:13:34.031: ERROR/AndroidRuntime(331): at java.lang.reflect.Constructor.newInstance(Constructor.java:446) 06-14 22:13:34.031: ERROR/AndroidRuntime(331): at android.view.LayoutInflater.createView(LayoutInflater.java:500) 06-14 22:13:34.031: ERROR/AndroidRuntime(331): ... 21 more 06-14 22:13:34.031: ERROR/AndroidRuntime(331): Caused by: java.lang.IllegalArgumentException: MapViews can only be created inside instances of MapActivity. 06-14 22:13:34.031: ERROR/AndroidRuntime(331): at com.google.android.maps.MapView.(MapView.java:281) 06-14 22:13:34.031: ERROR/AndroidRuntime(331): at com.google.android.maps.MapView.(MapView.java:254) 06-14 22:13:34.031: ERROR/AndroidRuntime(331): ... 25 more i had done all configuration plz let ny1 got idea?

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  • Composit widget - what is the preffered way?

    - by Aleksander Gralak
    I want to build reusable widget. It should be ordinal composite of standard elements. What is the best approach. Below is the code sample which I use currently, however there might be something more elegant. Furthermore the sample below runs perfectly in runtime, but visual editor in Eclipse is throwing exceptions (which is not a problem for me at this time). Is there any recommended way of creating composites? Should I use fragment? public class MyComposite extends LinearLayout { private ImageView m_a1; private ImageView m_a2; private ImageView m_w1; private ImageView m_w2; private ImageView m_w3; private ImageView m_w4; public CallBackSlider(final Context context) { this(context, null); } public CallBackSlider(final Context context, final AttributeSet attrs) { super(context, attrs); LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); inflater.inflate(R.layout.my_composite, this, true); setupViewItems(); } private void setupViewItems() { m_a1 = (ImageView) findViewById(R.id.A1Img); m_w1 = (ImageView) findViewById(R.id.Wave1Img); m_w2 = (ImageView) findViewById(R.id.Wave2Img); m_w3 = (ImageView) findViewById(R.id.Wave3Img); m_w4 = (ImageView) findViewById(R.id.Wave4Img); m_a2 = (ImageView) findViewById(R.id.A2Img); resetView(); } private void resetView() { m_w1.setAlpha(0); m_w2.setAlpha(0); m_w3.setAlpha(0); m_w4.setAlpha(0); } } Layout xml: <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/MyComposite" ... > <ImageView android:id="@+id/A1Img" android:src="@drawable/a1" ... /> <ImageView android:id="@+id/Wave1Img" ... android:src="@drawable/wave1" /> <ImageView android:id="@+id/Wave2Img" ... android:src="@drawable/wave2" /> <ImageView android:id="@+id/Wave3Img" ... android:src="@drawable/wave3" /> <ImageView android:id="@+id/Wave4Img" ... android:src="@drawable/wave4" /> <ImageView android:id="@+id/EarImg" ... android:src="@drawable/a2" /> </LinearLayout> Then you can use it in other layouts like this: ... <your.package.MyComposite android:id="@+id/mc1" ... /> ... And use from java code as well as instance of MyComposite class.

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  • Why not standard Android emulators?

    - by Gerry
    I'm new to Android, but have published iphone and bberry apps. I see that I have to create an emulator using the SDK, before I can write and test an app. Why are there no default emulators? Why not at least a Nexus one, or HTC hero emulator shipped with the product? Sure its supposed to be flexible, but why not make it easy to create hello world and play around with a virtual Android phone? Both blackberry and iphone come with default simulators when you download the sdk. Thanks, Gerry

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  • android - using resources drawable in content provider

    - by Russ Wheeler
    I am trying to pass back an image through a content provider in a separate app. I have two apps, one with the activity in (app a), the other with content provider (app b) I have app a reading an image off my SD card via app b using the following code. App a: public void but_update(View view) { ContentResolver resolver = getContentResolver(); Uri uri = Uri.parse("content://com.jash.cp_source_two.provider/note/1"); InputStream inStream = null; try { inStream = resolver.openInputStream(uri); Bitmap bitmap = BitmapFactory.decodeStream(inStream); image = (ImageView) findViewById(R.id.imageView1); image.setImageBitmap(bitmap); } catch(FileNotFoundException e) { Toast.makeText(getBaseContext(), "error = "+e, Toast.LENGTH_LONG).show(); } finally { if (inStream != null) { try { inStream.close(); } catch (IOException e) { Log.e("test", "could not close stream", e); } } } }; App b: @Override public ParcelFileDescriptor openFile(Uri uri, String mode) throws FileNotFoundException { try { File path = new File(Environment.getExternalStorageDirectory().getAbsolutePath(),"pic2.png"); return ParcelFileDescriptor.open(path,ParcelFileDescriptor.MODE_READ_ONLY); } catch (FileNotFoundException e) { Log.i("r", "File not found"); throw new FileNotFoundException(); } } In app a I am able to display an image from app a's resources folder, using setImageURi and constructing a URI using the following code. int id = R.drawable.a2; Resources resources = getBaseContext().getResources(); Uri uri = Uri.parse(ContentResolver.SCHEME_ANDROID_RESOURCE + "://" + resources.getResourcePackageName(id) + '/' + resources.getResourceTypeName(id) + '/' + resources.getResourceEntryName(id) ); image = (ImageView) findViewById(R.id.imageView1); image.setImageURI(uri); However, if I try to do the same in app b (read from app b's resources folder rather than the image on the SD card) it doesn't work, saying it can't find the file, even though I am creating the path of the file from the resource, so it is definitely there. Any ideas? Does it restrict sending resources over the content provider somehow? P.S. I also got an error when I tried to create the file with File path = new File(uri); saying 'there is no applicable constructor to '(android.net.Uri)' though http://developer.android.com/reference/java/io/File.html#File(java.net.URI) Seems to think it's possible...unless java.net.URI is different to android.net.URI, in which case can I convert them? Thanks Russ

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  • Replicate behavior of Android browser

    - by Brian515
    Hi all, I am writing for Android, and I can't figure out how to replicate the effect of the Android browser where the progress bar is at the top of the screen, with the webview below it, yet when you scroll down, the bar scrolls with the page. I've tried placing both the webview and the progress bar into a scrollview, but when I do that, the webview becomes completely unresponsive and will not load (or respond to any commands, for that matter). Any help would be greatly appreciated. Thanks! P.S., I'm using the Eclipse IDE, and I'd like to to continue using the 1.5 SDK if possible to maintain backwards compatibility (and just to be able use my own application -- my phone isn't getting 2.1 for a couple of months).

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  • VB.Net Validate an xml against a schema (strange problem)

    - by Apeksha
    I have written a small XML validator, that takes in an XML file and an XML schema and validates the XML files against that schema. It works well, except for an XML file, with this content: <?xml version="1.0" encoding="utf-8"?> <xc:program xmlns:xc="http:\\www.something.com\Schema\XC10" xc:version="4.0.22.0" > <xc:namespaceDecls> <xc:namespaceDecl xc:namespaceDeclURI="urn:swift:xsd:abc"> <xc:namespaceDeclPrefix>n</xc:namespaceDeclPrefix> </xc:namespaceDecl> </xc:namespaceDecls> </xc:program> I tried to validate this XML file against a bunch of different schemas. No matter which schema I select, this XML file comes out as valid. What is it that I am missing? Here is the relevant piece of code: 'Create a schema cache and add the given schema to it. Dim schemaCache As New Schema.XmlSchemaSet schemaCache.Add(targetNamespace, schemaFilename) 'Create an XML DOMDocument object. Dim xmlDom As New XmlDocument 'Assign the schema cache to the DOM document. 'schemas collection. xmlDom.Schemas = schemaCache 'Load selected file as the DOM document. xmlDom.Load(xmlFilename) xmlDom.Validate(AddressOf ValidationCallBack)

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  • php parsing xml result from ipb ssi tool

    - by Sir Troll
    Last week my code was running fine and now (without changing anything) it is no longer able to parse the elements out of the XML. The response from the ssi tool: <?xml version="1.0" encoding="ISO-8859-1"?> <ipbsource><topic id="32"> <title>Test topic</title> <lastposter id="1">Drake</lastposter> <starter id="18">Drake</starter> <forum id="3">Updates</forum> <date timestamp="1345600720">22 August 2012 - 03:58 AM</date> </topic> </ipbsource> enter code here Update: Switched to SimpleXML but I can't extract data from the xml: $xml = file_get_contents('http://site.com/forum/ssi.php?a=out&f=2&show=10&type=xml'); $xml = new SimpleXMLElement($xml); $item_array = array(); var_dump($xml); foreach($xml->topic as $el) { var_dump($el); echo 'Title: ' . $el->title; } The var_dump output: object(SimpleXMLElement)#1 (1) { [0]=> string(1) " " }

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  • NullPointerException when linking to Service that uses ContentProvider

    - by Danny Chia
    H.i everyone, this is my first post here! Anyways, I'm trying to write a "todo list" application. It stores the data in a ContentProvider, which is accessed via a Service. However, my app crashes at launch. My code is below: Manifest file: <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.examples.todolist" android:versionCode="1" android:versionName="1.0"> <application android:icon="@drawable/icon" android:label="@string/app_name" android:debuggable="True"> <activity android:name=".ToDoList" android:label="@string/app_name" android:theme="@style/ToDoTheme"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <service android:name="TodoService"/> <provider android:name="TodoProvider" android:authorities="com.examples.provider.todolist" /> </application> <uses-sdk android:minSdkVersion="7" /> </manifest> ToDoList.java: package com.examples.todolist; import com.examples.todolist.TodoService.LocalBinder; import java.util.ArrayList; import java.util.Date; import android.app.Activity; import android.content.SharedPreferences; import android.database.Cursor; import android.os.AsyncTask; import android.os.Bundle; import android.view.ContextMenu; import android.content.ComponentName; import android.content.Context; import android.content.Intent; import android.content.ServiceConnection; import android.os.IBinder; import android.view.KeyEvent; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.view.View.OnKeyListener; import android.widget.AdapterView; import android.widget.EditText; import android.widget.ListView; import android.widget.Toast; public class ToDoList extends Activity { static final private int ADD_NEW_TODO = Menu.FIRST; static final private int REMOVE_TODO = Menu.FIRST + 1; private static final String TEXT_ENTRY_KEY = "TEXT_ENTRY_KEY"; private static final String ADDING_ITEM_KEY = "ADDING_ITEM_KEY"; private static final String SELECTED_INDEX_KEY = "SELECTED_INDEX_KEY"; private boolean addingNew = false; private ArrayList<ToDoItem> todoItems; private ListView myListView; private EditText myEditText; private ToDoItemAdapter aa; int entries = 0; int notifs = 0; //ToDoDBAdapter toDoDBAdapter; Cursor toDoListCursor; TodoService mService; boolean mBound = false; /** Called when the activity is first created. */ public void onCreate(Bundle icicle) { super.onCreate(icicle); setContentView(R.layout.main); myListView = (ListView)findViewById(R.id.myListView); myEditText = (EditText)findViewById(R.id.myEditText); todoItems = new ArrayList<ToDoItem>(); int resID = R.layout.todolist_item; aa = new ToDoItemAdapter(this, resID, todoItems); myListView.setAdapter(aa); myEditText.setOnKeyListener(new OnKeyListener() { public boolean onKey(View v, int keyCode, KeyEvent event) { if (event.getAction() == KeyEvent.ACTION_DOWN) if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { ToDoItem newItem = new ToDoItem(myEditText.getText().toString(), 0); mService.insertTask(newItem); updateArray(); myEditText.setText(""); entries++; Toast.makeText(ToDoList.this, "Entry added", Toast.LENGTH_SHORT).show(); aa.notifyDataSetChanged(); cancelAdd(); return true; } return false; } }); registerForContextMenu(myListView); restoreUIState(); populateTodoList(); } private void populateTodoList() { // Get all the todo list items from the database. toDoListCursor = mService. getAllToDoItemsCursor(); startManagingCursor(toDoListCursor); // Update the array. updateArray(); Toast.makeText(this, "Todo list retrieved", Toast.LENGTH_SHORT).show(); } private void updateArray() { toDoListCursor.requery(); todoItems.clear(); if (toDoListCursor.moveToFirst()) do { String task = toDoListCursor.getString(toDoListCursor.getColumnIndex(ToDoDBAdapter.KEY_TASK)); long created = toDoListCursor.getLong(toDoListCursor.getColumnIndex(ToDoDBAdapter.KEY_CREATION_DATE)); int taskid = toDoListCursor.getInt(toDoListCursor.getColumnIndex(ToDoDBAdapter.KEY_ID)); ToDoItem newItem = new ToDoItem(task, new Date(created), taskid); todoItems.add(0, newItem); } while(toDoListCursor.moveToNext()); aa.notifyDataSetChanged(); } private void restoreUIState() { // Get the activity preferences object. SharedPreferences settings = getPreferences(0); // Read the UI state values, specifying default values. String text = settings.getString(TEXT_ENTRY_KEY, ""); Boolean adding = settings.getBoolean(ADDING_ITEM_KEY, false); // Restore the UI to the previous state. if (adding) { addNewItem(); myEditText.setText(text); } } @Override public void onSaveInstanceState(Bundle outState) { outState.putInt(SELECTED_INDEX_KEY, myListView.getSelectedItemPosition()); super.onSaveInstanceState(outState); } @Override public void onRestoreInstanceState(Bundle savedInstanceState) { int pos = -1; if (savedInstanceState != null) if (savedInstanceState.containsKey(SELECTED_INDEX_KEY)) pos = savedInstanceState.getInt(SELECTED_INDEX_KEY, -1); myListView.setSelection(pos); } @Override protected void onPause() { super.onPause(); // Get the activity preferences object. SharedPreferences uiState = getPreferences(0); // Get the preferences editor. SharedPreferences.Editor editor = uiState.edit(); // Add the UI state preference values. editor.putString(TEXT_ENTRY_KEY, myEditText.getText().toString()); editor.putBoolean(ADDING_ITEM_KEY, addingNew); // Commit the preferences. editor.commit(); } @Override public boolean onCreateOptionsMenu(Menu menu) { super.onCreateOptionsMenu(menu); // Create and add new menu items. MenuItem itemAdd = menu.add(0, ADD_NEW_TODO, Menu.NONE, R.string.add_new); MenuItem itemRem = menu.add(0, REMOVE_TODO, Menu.NONE, R.string.remove); // Assign icons itemAdd.setIcon(R.drawable.add_new_item); itemRem.setIcon(R.drawable.remove_item); // Allocate shortcuts to each of them. itemAdd.setShortcut('0', 'a'); itemRem.setShortcut('1', 'r'); return true; } @Override public boolean onPrepareOptionsMenu(Menu menu) { super.onPrepareOptionsMenu(menu); int idx = myListView.getSelectedItemPosition(); String removeTitle = getString(addingNew ? R.string.cancel : R.string.remove); MenuItem removeItem = menu.findItem(REMOVE_TODO); removeItem.setTitle(removeTitle); removeItem.setVisible(addingNew || idx > -1); return true; } @Override public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) { super.onCreateContextMenu(menu, v, menuInfo); menu.setHeaderTitle("Selected To Do Item"); menu.add(0, REMOVE_TODO, Menu.NONE, R.string.remove); } @Override public boolean onOptionsItemSelected(MenuItem item) { super.onOptionsItemSelected(item); int index = myListView.getSelectedItemPosition(); switch (item.getItemId()) { case (REMOVE_TODO): { if (addingNew) { cancelAdd(); } else { removeItem(index); } return true; } case (ADD_NEW_TODO): { addNewItem(); return true; } } return false; } @Override public boolean onContextItemSelected(MenuItem item) { super.onContextItemSelected(item); switch (item.getItemId()) { case (REMOVE_TODO): { AdapterView.AdapterContextMenuInfo menuInfo; menuInfo =(AdapterView.AdapterContextMenuInfo)item.getMenuInfo(); int index = menuInfo.position; removeItem(index); return true; } } return false; } @Override public void onDestroy() { super.onDestroy(); } private void cancelAdd() { addingNew = false; myEditText.setVisibility(View.GONE); } private void addNewItem() { addingNew = true; myEditText.setVisibility(View.VISIBLE); myEditText.requestFocus(); } private void removeItem(int _index) { // Items are added to the listview in reverse order, so invert the index. //toDoDBAdapter.removeTask(todoItems.size()-_index); ToDoItem item = todoItems.get(_index); final long selectedId = item.getTaskId(); mService.removeTask(selectedId); entries--; Toast.makeText(this, "Entry deleted", Toast.LENGTH_SHORT).show(); updateArray(); } @Override protected void onStart() { super.onStart(); Intent intent = new Intent(this, TodoService.class); bindService(intent, mConnection, Context.BIND_AUTO_CREATE); } @Override protected void onStop() { super.onStop(); // Unbind from the service if (mBound) { unbindService(mConnection); mBound = false; } } private ServiceConnection mConnection = new ServiceConnection() { public void onServiceConnected(ComponentName className, IBinder service) { LocalBinder binder = (LocalBinder) service; mService = binder.getService(); mBound = true; } public void onServiceDisconnected(ComponentName arg0) { mBound = false; } }; public class TimedToast extends AsyncTask<Long, Integer, Integer> { @Override protected Integer doInBackground(Long... arg0) { if (notifs < 15) { try { Toast.makeText(ToDoList.this, entries + " entries left", Toast.LENGTH_SHORT).show(); notifs++; Thread.sleep(20000); } catch (InterruptedException e) { } } return 0; } } } TodoService.java: package com.examples.todolist; import android.app.Service; import android.content.ContentResolver; import android.content.ContentValues; import android.content.Intent; import android.database.Cursor; import android.os.Binder; import android.os.IBinder; public class TodoService extends Service { private final IBinder mBinder = new LocalBinder(); @Override public IBinder onBind(Intent arg0) { return mBinder; } public class LocalBinder extends Binder { TodoService getService() { return TodoService.this; } } public void insertTask(ToDoItem _task) { ContentResolver cr = getContentResolver(); ContentValues values = new ContentValues(); values.put(TodoProvider.KEY_CREATION_DATE, _task.getCreated().getTime()); values.put(TodoProvider.KEY_TASK, _task.getTask()); cr.insert(TodoProvider.CONTENT_URI, values); } public void updateTask(ToDoItem _task) { long tid = _task.getTaskId(); ContentResolver cr = getContentResolver(); ContentValues values = new ContentValues(); values.put(TodoProvider.KEY_TASK, _task.getTask()); cr.update(TodoProvider.CONTENT_URI, values, TodoProvider.KEY_ID + "=" + tid, null); } public void removeTask(long tid) { ContentResolver cr = getContentResolver(); cr.delete(TodoProvider.CONTENT_URI, TodoProvider.KEY_ID + "=" + tid, null); } public Cursor getAllToDoItemsCursor() { ContentResolver cr = getContentResolver(); return cr.query(TodoProvider.CONTENT_URI, null, null, null, null); } } TodoProvider.java: package com.examples.todolist; import android.content.*; import android.database.Cursor; import android.database.SQLException; import android.database.sqlite.SQLiteOpenHelper; import android.database.sqlite.SQLiteDatabase; import android.database.sqlite.SQLiteQueryBuilder; import android.database.sqlite.SQLiteDatabase.CursorFactory; import android.net.Uri; import android.text.TextUtils; import android.util.Log; public class TodoProvider extends ContentProvider { public static final Uri CONTENT_URI = Uri.parse("content://com.examples.provider.todolist/todo"); @Override public boolean onCreate() { Context context = getContext(); todoHelper dbHelper = new todoHelper(context, DATABASE_NAME, null, DATABASE_VERSION); todoDB = dbHelper.getWritableDatabase(); return (todoDB == null) ? false : true; } @Override public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, String sort) { SQLiteQueryBuilder tb = new SQLiteQueryBuilder(); tb.setTables(TODO_TABLE); // If this is a row query, limit the result set to the passed in row. switch (uriMatcher.match(uri)) { case TASK_ID: tb.appendWhere(KEY_ID + "=" + uri.getPathSegments().get(1)); break; default: break; } // If no sort order is specified sort by date / time String orderBy; if (TextUtils.isEmpty(sort)) { orderBy = KEY_ID; } else { orderBy = sort; } // Apply the query to the underlying database. Cursor c = tb.query(todoDB, projection, selection, selectionArgs, null, null, orderBy); // Register the contexts ContentResolver to be notified if // the cursor result set changes. c.setNotificationUri(getContext().getContentResolver(), uri); // Return a cursor to the query result. return c; } @Override public Uri insert(Uri _uri, ContentValues _initialValues) { // Insert the new row, will return the row number if // successful. long rowID = todoDB.insert(TODO_TABLE, "task", _initialValues); // Return a URI to the newly inserted row on success. if (rowID > 0) { Uri uri = ContentUris.withAppendedId(CONTENT_URI, rowID); getContext().getContentResolver().notifyChange(uri, null); return uri; } throw new SQLException("Failed to insert row into " + _uri); } @Override public int delete(Uri uri, String where, String[] whereArgs) { int count; switch (uriMatcher.match(uri)) { case TASKS: count = todoDB.delete(TODO_TABLE, where, whereArgs); break; case TASK_ID: String segment = uri.getPathSegments().get(1); count = todoDB.delete(TODO_TABLE, KEY_ID + "=" + segment + (!TextUtils.isEmpty(where) ? " AND (" + where + ')' : ""), whereArgs); break; default: throw new IllegalArgumentException("Unsupported URI: " + uri); } getContext().getContentResolver().notifyChange(uri, null); return count; } @Override public int update(Uri uri, ContentValues values, String where, String[] whereArgs) { int count; switch (uriMatcher.match(uri)) { case TASKS: count = todoDB.update(TODO_TABLE, values, where, whereArgs); break; case TASK_ID: String segment = uri.getPathSegments().get(1); count = todoDB.update(TODO_TABLE, values, KEY_ID + "=" + segment + (!TextUtils.isEmpty(where) ? " AND (" + where + ')' : ""), whereArgs); break; default: throw new IllegalArgumentException("Unknown URI " + uri); } getContext().getContentResolver().notifyChange(uri, null); return count; } @Override public String getType(Uri uri) { switch (uriMatcher.match(uri)) { case TASKS: return "vnd.android.cursor.dir/vnd.examples.task"; case TASK_ID: return "vnd.android.cursor.item/vnd.examples.task"; default: throw new IllegalArgumentException("Unsupported URI: " + uri); } } // Create the constants used to differentiate between the different URI // requests. private static final int TASKS = 1; private static final int TASK_ID = 2; private static final UriMatcher uriMatcher; // Allocate the UriMatcher object, where a URI ending in 'tasks' will // correspond to a request for all tasks, and 'tasks' with a // trailing '/[rowID]' will represent a single task row. static { uriMatcher = new UriMatcher(UriMatcher.NO_MATCH); uriMatcher.addURI("com.examples.provider.Todolist", "tasks", TASKS); uriMatcher.addURI("com.examples.provider.Todolist", "tasks/#", TASK_ID); } //The underlying database private SQLiteDatabase todoDB; private static final String TAG = "TodoProvider"; private static final String DATABASE_NAME = "todolist.db"; private static final int DATABASE_VERSION = 1; private static final String TODO_TABLE = "todolist"; // Column Names public static final String KEY_ID = "_id"; public static final String KEY_TASK = "task"; public static final String KEY_CREATION_DATE = "date"; public long insertTask(ToDoItem _task) { // Create a new row of values to insert. ContentValues newTaskValues = new ContentValues(); // Assign values for each row. newTaskValues.put(KEY_TASK, _task.getTask()); newTaskValues.put(KEY_CREATION_DATE, _task.getCreated().getTime()); // Insert the row. return todoDB.insert(TODO_TABLE, null, newTaskValues); } public boolean updateTask(long _rowIndex, String _task) { ContentValues newValue = new ContentValues(); newValue.put(KEY_TASK, _task); return todoDB.update(TODO_TABLE, newValue, KEY_ID + "=" + _rowIndex, null) > 0; } public boolean removeTask(long _rowIndex) { return todoDB.delete(TODO_TABLE, KEY_ID + "=" + _rowIndex, null) > 0; } // Helper class for opening, creating, and managing database version control private static class todoHelper extends SQLiteOpenHelper { private static final String DATABASE_CREATE = "create table " + TODO_TABLE + " (" + KEY_ID + " integer primary key autoincrement, " + KEY_TASK + " TEXT, " + KEY_CREATION_DATE + " INTEGER);"; public todoHelper(Context cn, String name, CursorFactory cf, int ver) { super(cn, name, cf, ver); } @Override public void onCreate(SQLiteDatabase db) { db.execSQL(DATABASE_CREATE); } @Override public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { Log.w(TAG, "Upgrading database from version " + oldVersion + " to " + newVersion + ", which will destroy all old data"); db.execSQL("DROP TABLE IF EXISTS " + TODO_TABLE); onCreate(db); } } } I've omitted the other files as I'm sure they are correct. When I run the program, LogCat shows that the NullPointerException occurs in populateTodoList(), at toDoListCursor = mService.getAllToDoItemsCursor(). mService is the Cursor object returned by TodoService. I've added the service to the Manifest file, but I still cannot find out why it's causing an exception. Thanks in advance.

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  • Android simple question

    - by Josemalive
    Hi, I have an android application that shows a grid view that shows: 1 2 3 4 GridView gridview=(GridView)findViewById(R.id.GridView_test); DataBaseHelper dbhelper=new DataBaseHelper(this); ArrayList<String> test=new ArrayList<String>(5); backlinksadapter.add("1"); backlinksadapter.add("2"); backlinksadapter.add("3"); backlinksadapter.add("4"); ArrayAdapter mAdapter=new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, test); gridview.setAdapter(mAdapter); By the moment is working, but i would like to show foreach line of the grid, 2 columns with the values of a 2 dimensional array (something like the GridView in ASP.Net - as datasource -). I would like to show: 1 | Person 1 2 | Person 2 3 | Person 3 4 | Person 4 Any idea? Thanks in advance. Jose.

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  • Draw a Image on FullScreen mode Android

    - by Marcos Vasconcelos
    Hi, I already know how to get my Activity as fullscreen on Android, now I need to draw a Image in this screen. This is my XML layout. <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"> <ImageView android:id="@+id/image01" android:layout_width="fill_parent" android:layout_height="fill_parent" /> </LinearLayout> This image is dynamic generated and drawed in the ImageView. This is my code on my Activity. public void onCreate(Bundle savedInstance) { super.onCreate(savedInstance); requestWindowFeature(Window.FEATURE_NO_TITLE); getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN); setContentView(R.layout.main); } But when running, the Activity is FullScreen, but the ImageView is adjusted in the center. What's wrong?

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  • An Xml Serializable PropertyBag Dictionary Class for .NET

    - by Rick Strahl
    I don't know about you but I frequently need property bags in my applications to store and possibly cache arbitrary data. Dictionary<T,V> works well for this although I always seem to be hunting for a more specific generic type that provides a string key based dictionary. There's string dictionary, but it only works with strings. There's Hashset<T> but it uses the actual values as keys. In most key value pair situations for me string is key value to work off. Dictionary<T,V> works well enough, but there are some issues with serialization of dictionaries in .NET. The .NET framework doesn't do well serializing IDictionary objects out of the box. The XmlSerializer doesn't support serialization of IDictionary via it's default serialization, and while the DataContractSerializer does support IDictionary serialization it produces some pretty atrocious XML. What doesn't work? First off Dictionary serialization with the Xml Serializer doesn't work so the following fails: [TestMethod] public void DictionaryXmlSerializerTest() { var bag = new Dictionary<string, object>(); bag.Add("key", "Value"); bag.Add("Key2", 100.10M); bag.Add("Key3", Guid.NewGuid()); bag.Add("Key4", DateTime.Now); bag.Add("Key5", true); bag.Add("Key7", new byte[3] { 42, 45, 66 }); TestContext.WriteLine(this.ToXml(bag)); } public string ToXml(object obj) { if (obj == null) return null; StringWriter sw = new StringWriter(); XmlSerializer ser = new XmlSerializer(obj.GetType()); ser.Serialize(sw, obj); return sw.ToString(); } The error you get with this is: System.NotSupportedException: The type System.Collections.Generic.Dictionary`2[[System.String, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.Object, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]] is not supported because it implements IDictionary. Got it! BTW, the same is true with binary serialization. Running the same code above against the DataContractSerializer does work: [TestMethod] public void DictionaryDataContextSerializerTest() { var bag = new Dictionary<string, object>(); bag.Add("key", "Value"); bag.Add("Key2", 100.10M); bag.Add("Key3", Guid.NewGuid()); bag.Add("Key4", DateTime.Now); bag.Add("Key5", true); bag.Add("Key7", new byte[3] { 42, 45, 66 }); TestContext.WriteLine(this.ToXmlDcs(bag)); } public string ToXmlDcs(object value, bool throwExceptions = false) { var ser = new DataContractSerializer(value.GetType(), null, int.MaxValue, true, false, null); MemoryStream ms = new MemoryStream(); ser.WriteObject(ms, value); return Encoding.UTF8.GetString(ms.ToArray(), 0, (int)ms.Length); } This DOES work but produces some pretty heinous XML (formatted with line breaks and indentation here): <ArrayOfKeyValueOfstringanyType xmlns="http://schemas.microsoft.com/2003/10/Serialization/Arrays" xmlns:i="http://www.w3.org/2001/XMLSchema-instance"> <KeyValueOfstringanyType> <Key>key</Key> <Value i:type="a:string" xmlns:a="http://www.w3.org/2001/XMLSchema">Value</Value> </KeyValueOfstringanyType> <KeyValueOfstringanyType> <Key>Key2</Key> <Value i:type="a:decimal" xmlns:a="http://www.w3.org/2001/XMLSchema">100.10</Value> </KeyValueOfstringanyType> <KeyValueOfstringanyType> <Key>Key3</Key> <Value i:type="a:guid" xmlns:a="http://schemas.microsoft.com/2003/10/Serialization/">2cd46d2a-a636-4af4-979b-e834d39b6d37</Value> </KeyValueOfstringanyType> <KeyValueOfstringanyType> <Key>Key4</Key> <Value i:type="a:dateTime" xmlns:a="http://www.w3.org/2001/XMLSchema">2011-09-19T17:17:05.4406999-07:00</Value> </KeyValueOfstringanyType> <KeyValueOfstringanyType> <Key>Key5</Key> <Value i:type="a:boolean" xmlns:a="http://www.w3.org/2001/XMLSchema">true</Value> </KeyValueOfstringanyType> <KeyValueOfstringanyType> <Key>Key7</Key> <Value i:type="a:base64Binary" xmlns:a="http://www.w3.org/2001/XMLSchema">Ki1C</Value> </KeyValueOfstringanyType> </ArrayOfKeyValueOfstringanyType> Ouch! That seriously hurts the eye! :-) Worse though it's extremely verbose with all those repetitive namespace declarations. It's good to know that it works in a pinch, but for a human readable/editable solution or something lightweight to store in a database it's not quite ideal. Why should I care? As a little background, in one of my applications I have a need for a flexible property bag that is used on a free form database field on an otherwise static entity. Basically what I have is a standard database record to which arbitrary properties can be added in an XML based string field. I intend to expose those arbitrary properties as a collection from field data stored in XML. The concept is pretty simple: When loading write the data to the collection, when the data is saved serialize the data into an XML string and store it into the database. When reading the data pick up the XML and if the collection on the entity is accessed automatically deserialize the XML into the Dictionary. (I'll talk more about this in another post). While the DataContext Serializer would work, it's verbosity is problematic both for size of the generated XML strings and the fact that users can manually edit this XML based property data in an advanced mode. A clean(er) layout certainly would be preferable and more user friendly. Custom XMLSerialization with a PropertyBag Class So… after a bunch of experimentation with different serialization formats I decided to create a custom PropertyBag class that provides for a serializable Dictionary. It's basically a custom Dictionary<TType,TValue> implementation with the keys always set as string keys. The result are PropertyBag<TValue> and PropertyBag (which defaults to the object type for values). The PropertyBag<TType> and PropertyBag classes provide these features: Subclassed from Dictionary<T,V> Implements IXmlSerializable with a cleanish XML format ToXml() and FromXml() methods to export and import to and from XML strings Static CreateFromXml() method to create an instance It's simple enough as it's merely a Dictionary<string,object> subclass but that supports serialization to a - what I think at least - cleaner XML format. The class is super simple to use: [TestMethod] public void PropertyBagTwoWayObjectSerializationTest() { var bag = new PropertyBag(); bag.Add("key", "Value"); bag.Add("Key2", 100.10M); bag.Add("Key3", Guid.NewGuid()); bag.Add("Key4", DateTime.Now); bag.Add("Key5", true); bag.Add("Key7", new byte[3] { 42,45,66 } ); bag.Add("Key8", null); bag.Add("Key9", new ComplexObject() { Name = "Rick", Entered = DateTime.Now, Count = 10 }); string xml = bag.ToXml(); TestContext.WriteLine(bag.ToXml()); bag.Clear(); bag.FromXml(xml); Assert.IsTrue(bag["key"] as string == "Value"); Assert.IsInstanceOfType( bag["Key3"], typeof(Guid)); Assert.IsNull(bag["Key8"]); //Assert.IsNull(bag["Key10"]); Assert.IsInstanceOfType(bag["Key9"], typeof(ComplexObject)); } This uses the PropertyBag class which uses a PropertyBag<string,object> - which means it returns untyped values of type object. I suspect for me this will be the most common scenario as I'd want to store arbitrary values in the PropertyBag rather than one specific type. The same code with a strongly typed PropertyBag<decimal> looks like this: [TestMethod] public void PropertyBagTwoWayValueTypeSerializationTest() { var bag = new PropertyBag<decimal>(); bag.Add("key", 10M); bag.Add("Key1", 100.10M); bag.Add("Key2", 200.10M); bag.Add("Key3", 300.10M); string xml = bag.ToXml(); TestContext.WriteLine(bag.ToXml()); bag.Clear(); bag.FromXml(xml); Assert.IsTrue(bag.Get("Key1") == 100.10M); Assert.IsTrue(bag.Get("Key3") == 300.10M); } and produces typed results of type decimal. The types can be either value or reference types the combination of which actually proved to be a little more tricky than anticipated due to null and specific string value checks required - getting the generic typing right required use of default(T) and Convert.ChangeType() to trick the compiler into playing nice. Of course the whole raison d'etre for this class is the XML serialization. You can see in the code above that we're doing a .ToXml() and .FromXml() to serialize to and from string. The XML produced for the first example looks like this: <?xml version="1.0" encoding="utf-8"?> <properties> <item> <key>key</key> <value>Value</value> </item> <item> <key>Key2</key> <value type="decimal">100.10</value> </item> <item> <key>Key3</key> <value type="___System.Guid"> <guid>f7a92032-0c6d-4e9d-9950-b15ff7cd207d</guid> </value> </item> <item> <key>Key4</key> <value type="datetime">2011-09-26T17:45:58.5789578-10:00</value> </item> <item> <key>Key5</key> <value type="boolean">true</value> </item> <item> <key>Key7</key> <value type="base64Binary">Ki1C</value> </item> <item> <key>Key8</key> <value type="nil" /> </item> <item> <key>Key9</key> <value type="___Westwind.Tools.Tests.PropertyBagTest+ComplexObject"> <ComplexObject> <Name>Rick</Name> <Entered>2011-09-26T17:45:58.5789578-10:00</Entered> <Count>10</Count> </ComplexObject> </value> </item> </properties>   The format is a bit cleaner than the DataContractSerializer. Each item is serialized into <key> <value> pairs. If the value is a string no type information is written. Since string tends to be the most common type this saves space and serialization processing. All other types are attributed. Simple types are mapped to XML types so things like decimal, datetime, boolean and base64Binary are encoded using their Xml type values. All other types are embedded with a hokey format that describes the .NET type preceded by a three underscores and then are encoded using the XmlSerializer. You can see this best above in the ComplexObject encoding. For custom types this isn't pretty either, but it's more concise than the DCS and it works as long as you're serializing back and forth between .NET clients at least. The XML generated from the second example that uses PropertyBag<decimal> looks like this: <?xml version="1.0" encoding="utf-8"?> <properties> <item> <key>key</key> <value type="decimal">10</value> </item> <item> <key>Key1</key> <value type="decimal">100.10</value> </item> <item> <key>Key2</key> <value type="decimal">200.10</value> </item> <item> <key>Key3</key> <value type="decimal">300.10</value> </item> </properties>   How does it work As I mentioned there's nothing fancy about this solution - it's little more than a subclass of Dictionary<T,V> that implements custom Xml Serialization and a couple of helper methods that facilitate getting the XML in and out of the class more easily. But it's proven very handy for a number of projects for me where dynamic data storage is required. Here's the code: /// <summary> /// Creates a serializable string/object dictionary that is XML serializable /// Encodes keys as element names and values as simple values with a type /// attribute that contains an XML type name. Complex names encode the type /// name with type='___namespace.classname' format followed by a standard xml /// serialized format. The latter serialization can be slow so it's not recommended /// to pass complex types if performance is critical. /// </summary> [XmlRoot("properties")] public class PropertyBag : PropertyBag<object> { /// <summary> /// Creates an instance of a propertybag from an Xml string /// </summary> /// <param name="xml">Serialize</param> /// <returns></returns> public static PropertyBag CreateFromXml(string xml) { var bag = new PropertyBag(); bag.FromXml(xml); return bag; } } /// <summary> /// Creates a serializable string for generic types that is XML serializable. /// /// Encodes keys as element names and values as simple values with a type /// attribute that contains an XML type name. Complex names encode the type /// name with type='___namespace.classname' format followed by a standard xml /// serialized format. The latter serialization can be slow so it's not recommended /// to pass complex types if performance is critical. /// </summary> /// <typeparam name="TValue">Must be a reference type. For value types use type object</typeparam> [XmlRoot("properties")] public class PropertyBag<TValue> : Dictionary<string, TValue>, IXmlSerializable { /// <summary> /// Not implemented - this means no schema information is passed /// so this won't work with ASMX/WCF services. /// </summary> /// <returns></returns> public System.Xml.Schema.XmlSchema GetSchema() { return null; } /// <summary> /// Serializes the dictionary to XML. Keys are /// serialized to element names and values as /// element values. An xml type attribute is embedded /// for each serialized element - a .NET type /// element is embedded for each complex type and /// prefixed with three underscores. /// </summary> /// <param name="writer"></param> public void WriteXml(System.Xml.XmlWriter writer) { foreach (string key in this.Keys) { TValue value = this[key]; Type type = null; if (value != null) type = value.GetType(); writer.WriteStartElement("item"); writer.WriteStartElement("key"); writer.WriteString(key as string); writer.WriteEndElement(); writer.WriteStartElement("value"); string xmlType = XmlUtils.MapTypeToXmlType(type); bool isCustom = false; // Type information attribute if not string if (value == null) { writer.WriteAttributeString("type", "nil"); } else if (!string.IsNullOrEmpty(xmlType)) { if (xmlType != "string") { writer.WriteStartAttribute("type"); writer.WriteString(xmlType); writer.WriteEndAttribute(); } } else { isCustom = true; xmlType = "___" + value.GetType().FullName; writer.WriteStartAttribute("type"); writer.WriteString(xmlType); writer.WriteEndAttribute(); } // Actual deserialization if (!isCustom) { if (value != null) writer.WriteValue(value); } else { XmlSerializer ser = new XmlSerializer(value.GetType()); ser.Serialize(writer, value); } writer.WriteEndElement(); // value writer.WriteEndElement(); // item } } /// <summary> /// Reads the custom serialized format /// </summary> /// <param name="reader"></param> public void ReadXml(System.Xml.XmlReader reader) { this.Clear(); while (reader.Read()) { if (reader.NodeType == XmlNodeType.Element && reader.Name == "key") { string xmlType = null; string name = reader.ReadElementContentAsString(); // item element reader.ReadToNextSibling("value"); if (reader.MoveToNextAttribute()) xmlType = reader.Value; reader.MoveToContent(); TValue value; if (xmlType == "nil") value = default(TValue); // null else if (string.IsNullOrEmpty(xmlType)) { // value is a string or object and we can assign TValue to value string strval = reader.ReadElementContentAsString(); value = (TValue) Convert.ChangeType(strval, typeof(TValue)); } else if (xmlType.StartsWith("___")) { while (reader.Read() && reader.NodeType != XmlNodeType.Element) { } Type type = ReflectionUtils.GetTypeFromName(xmlType.Substring(3)); //value = reader.ReadElementContentAs(type,null); XmlSerializer ser = new XmlSerializer(type); value = (TValue)ser.Deserialize(reader); } else value = (TValue)reader.ReadElementContentAs(XmlUtils.MapXmlTypeToType(xmlType), null); this.Add(name, value); } } } /// <summary> /// Serializes this dictionary to an XML string /// </summary> /// <returns>XML String or Null if it fails</returns> public string ToXml() { string xml = null; SerializationUtils.SerializeObject(this, out xml); return xml; } /// <summary> /// Deserializes from an XML string /// </summary> /// <param name="xml"></param> /// <returns>true or false</returns> public bool FromXml(string xml) { this.Clear(); // if xml string is empty we return an empty dictionary if (string.IsNullOrEmpty(xml)) return true; var result = SerializationUtils.DeSerializeObject(xml, this.GetType()) as PropertyBag<TValue>; if (result != null) { foreach (var item in result) { this.Add(item.Key, item.Value); } } else // null is a failure return false; return true; } /// <summary> /// Creates an instance of a propertybag from an Xml string /// </summary> /// <param name="xml"></param> /// <returns></returns> public static PropertyBag<TValue> CreateFromXml(string xml) { var bag = new PropertyBag<TValue>(); bag.FromXml(xml); return bag; } } } The code uses a couple of small helper classes SerializationUtils and XmlUtils for mapping Xml types to and from .NET, both of which are from the WestWind,Utilities project (which is the same project where PropertyBag lives) from the West Wind Web Toolkit. The code implements ReadXml and WriteXml for the IXmlSerializable implementation using old school XmlReaders and XmlWriters (because it's pretty simple stuff - no need for XLinq here). Then there are two helper methods .ToXml() and .FromXml() that basically allow your code to easily convert between XML and a PropertyBag object. In my code that's what I use to actually to persist to and from the entity XML property during .Load() and .Save() operations. It's sweet to be able to have a string key dictionary and then be able to turn around with 1 line of code to persist the whole thing to XML and back. Hopefully some of you will find this class as useful as I've found it. It's a simple solution to a common requirement in my applications and I've used the hell out of it in the  short time since I created it. Resources You can find the complete code for the two classes plus the helpers in the Subversion repository for Westwind.Utilities. You can grab the source files from there or download the whole project. You can also grab the full Westwind.Utilities assembly from NuGet and add it to your project if that's easier for you. PropertyBag Source Code SerializationUtils and XmlUtils Westwind.Utilities Assembly on NuGet (add from Visual Studio) © Rick Strahl, West Wind Technologies, 2005-2011Posted in .NET  CSharp   Tweet (function() { var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true; po.src = 'https://apis.google.com/js/plusone.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s); })();

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  • Pass a single boolean from an Android App to a libgdx game

    - by Doug Henning
    I'm writing an Android application that needs to pass a single boolean into an Android game that I am also writing. The idea is that the user does something in the App which will affect how the game operates. This is tricky with LIBGDX since I need to get the bool value into the Java files of the game, but of course, you can't call Android specific things from within LIBGDX's main Java files. I tried using an intent but of course the same problem persists. I can get the boolean into the MainActivity.Java of the android output of the game, but can't pass it along any further since the android output and the main java files don't know about each other. I have seen a few tutorials that explain how to use set up an interface in the LIBGDX java files that can call android things. This seems like wild overkill for what I want to do. I've been trying to use Android's Shared Preferences with LIBGDX's Gdx.app.getPreferences, but I can't make it work. Anyhelp would be MUCH appreciated. I've set up two hello world applications. One is a standard Android app, with a single button that is supposed to write "true" into the shared preferences. The other is a standard LIBGDX hello world that is supposed to do nothing but check that bool when launched and if true display one image to the screen, if false, display a different one. Here's the relevant bit of the Android code: import android.preference.PreferenceManager; public void onClick(View view) { if (view == this.boolButton){ final String PREF_FILE_NAME = "myBool"; SharedPreferences preferences = getSharedPreferences(PREF_FILE_NAME, MODE_WORLD_WRITEABLE); SharedPreferences.Editor editor = preferences.edit(); editor.putBoolean("myBool", true); editor.commit(); } } And here's the relevant bit of the code from the LIBGDX main file: Preferences prefs = Gdx.app.getPreferences("myBool"); boolean switcher = prefs.getBoolean("myBool"); if(switcher == true){ texture = new Texture(Gdx.files.internal("data/worked512.png")); prefs.putBoolean("myBool", false); } else { texture = new Texture(Gdx.files.internal("data/libgdx.png")); } Everything compiles fine, it just doesn't work. I've spent HOURS googling trying to find a way to pass this single boolean from android into a LIBGDX main and I'm totally stumped. Thanks for your help.

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  • Pass a single boolean from an Android App to a LIBGDK game

    - by Doug Henning
    I'm writing an Android application that needs to pass a single boolean into an Android game that I am also writing. The idea is that the user does something in the App which will affect how the game operates. This is tricky with LIBGDX since I need to get the bool value into the Java files of the game, but of course, you can't call Android specific things from within LIBGDX's main Java files. I tried using an intent but of course the same problem persists. I can get the boolean into the MainActivity.Java of the android output of the game, but can't pass it along any further since the android output and the main java files don't know about each other. I have seen a few tutorials that explain how to use set up an interface in the LIBGDX java files that can call android things. This seems like wild overkill for what I want to do. I've been trying to use Android's Shared Preferences with LIBGDX's Gdx.app.getPreferences, but I can't make it work. Anyhelp would be MUCH appreciated. I've set up two hello world applications. One is a standard Android app, with a single button that is supposed to write "true" into the shared preferences. The other is a standard LIBGDX hello world that is supposed to do nothing but check that bool when launched and if true display one image to the screen, if false, display a different one. Here's the relevant bit of the Android code: import android.preference.PreferenceManager; public void onClick(View view) { if (view == this.boolButton){ final String PREF_FILE_NAME = "myBool"; SharedPreferences preferences = getSharedPreferences(PREF_FILE_NAME, MODE_WORLD_WRITEABLE); SharedPreferences.Editor editor = preferences.edit(); editor.putBoolean("myBool", true); editor.commit(); } } And here's the relevant bit of the code from the LIBGDX main file: Preferences prefs = Gdx.app.getPreferences("myBool"); boolean switcher = prefs.getBoolean("myBool"); if(switcher == true){ texture = new Texture(Gdx.files.internal("data/worked512.png")); prefs.putBoolean("myBool", false); } else { texture = new Texture(Gdx.files.internal("data/libgdx.png")); } Everything compiles fine, it just doesn't work. I've spent HOURS googling trying to find a way to pass this single boolean from android into a LIBGDX main and I'm totally stumped. Thanks for your help.

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  • Does it make sense to use ORM in Android development?

    - by Heinzi
    Does it make sense to use an ORM in Android development or is the framework optimized for a tighter coupling between the UI and the DB layer? Background: I've just started with Android development, and my first instinct (coming from a .net background) was to look for a small object-relational mapper and other tools that help reduce boilerplate clode (e.g. POJOs + OrmLite + Lombok). However, while developing my first toy application I stumbled upon a UI class that explicitly requires a database cursor: AlphabetIndexer. That made me wonder if maybe the Android library is not suited for a strict decoupling of UI and DB layer and that I will miss out on a lot of useful, time-saving features if I try to use POJOs everywhere (instead of direct database access). Clarification: I'm quite aware of the advantages of using ORM in general, I'm specifically interested in how well the Android class library plays along with it.

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  • save data in the database to xml in c [closed]

    - by Jayanth N
    I have some data in the database. I want those data in database to be stored as an xml file. I'm using postgresql 9.1 for database, for xml processing I'm using libxml (http://xmlsoft.org/). I'm writing the code in C language. Please help me. Detailed explanation: I have a client, which sends me a xml file. Server receives the xml file, parses the xml file and stores it in the db. From db i want to send the details in the form of an xml to the client. client: <employee> <name>glen</name> <telephone>123456789</telephone> </employee> <employee> <name>gwen</name> <telephone>123456789</telephone> </employee> server parses this xml file as displayed below: name : glen telephone:123456789 name : gwen telephone: 123456789 and saves it in a database(postgresql9.1) if the client requests for details of the employees, i've to send it in xml form from database.I don't know how to do it can u help me out.

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  • Image overlapping in widget

    - by Hunt
    I am trying to create a widget in android in which when I click over image the image gets changed with a new one -- kind of toggle image. But when I click over it, the image overwrites over the old one rather then replacing the new one. I don't know whether this is the way the widget works or am I doing something wrong. My images are semi-transparent so in case one overrides another one can see the image which is being overlapped. This is the code that I have written in OnReceive by overriding it: @Override public void onReceive(Context context, Intent intent){ if (intent.getAction().equals(iAlertConstant.ACTION_WIDGET_UPDATE_FROM_WIDGET)) { RemoteViews remoteViews = new RemoteViews(context.getPackageName(),R.layout.mywidget); remoteViews.setImageViewResource(R.id.btnOnOff,R.drawable.offbtn); ComponentName thisWidget = new ComponentName(context, EmergencyWidget.class); AppWidgetManager.getInstance(context).updateAppWidget(thisWidget, remoteViews); } else super.onReceive(context, intent); } Layout <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:background="@drawable/widget_background" android:paddingLeft="10.0dip" android:paddingTop="8.0dip" android:paddingRight="10.0dip" android:paddingBottom="8.0dip" android:layout_width="fill_parent" android:layout_height="72dp" android:layout_marginLeft="10.0dip" android:layout_marginTop="10.0dip" android:layout_marginRight="10.0dip" android:id="@+id/emergencyWidget" android:orientation="horizontal"> <ImageView android:background="@drawable/offbtn" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="7dp" android:layout_marginLeft="4dp" android:layout_marginRight="4dp" android:layout_gravity="right" android:id="@+id/btnOnOff" /> </LinearLayout>

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  • Button text loses allignment after clicking

    - by breathe0
    Strange things happen. I have a 4x4 button table layout, which is the following: <TableLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_below="@+id/cerca"> <TableRow android:layout_width = "fill_parent" android:layout_height = "wrap_content"> <Button android:id = "@+id/btn1" android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:layout_weight="1" android:text = "Scarica POI da server" android:onClick="downloadFromServer" /> <Button android:id = "@+id/btn2" android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:layout_weight="1" android:text = "Aggiungi POI" android:onClick="goCreatePOI" /> </TableRow> <TableRow android:layout_width = "fill_parent" android:layout_height = "wrap_content"> <Button android:id = "@+id/btn3" android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:layout_weight="1" android:text = "Rimuovi i POI del server" android:onClick="removeServerPOI" /> <Button android:id = "@+id/btn4" android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:layout_weight="1" android:text = "Rimuovi i POI personali" android:onClick="removePersonalPOI" /> </TableRow> </TableLayout> This table layout is nested inside a relative layout, which is nested in a scrollview. Now, whenever i click on one of them, everytime the text inside the button change allignment: if before clicking was centered and displayed on two lines, after the click it loses its alignment and is displayed only in one row (cutting off some part of the text). Am I doing something wrong, or maybe it's a bug?

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  • Android: preferences not being stored automatically

    - by Vitaly
    I'm trying to use preference screen. I'm following all steps from online tutorial (once I couldn't get it working, I found other tutorials, and steps seem to be fine). I get to preferences screen, edit values, return to calling activity (via hardware return button). In DDMS perspective FileExplorer shows package_name_preferences.xml file with preferences that should be stored. It contains: <?xml version='1.0' encoding='utf-8' standalone='yes' ?> <map> <string name="false">kg</string> </map> while I expect (data line only shown). <string name="weight">kg</string> Also, if I go change only 1 preference, the same value changes, not a new row is created. I'm just tempted to write my own preference classes that would store data in files or DB, but I know that preferences should work, it just doesn't save properly my stuff. Edit Tutorials used: Main Tutorial - Was using this as a base, simplified, as I needed only 3 listPreferences so far. Another One - Used this one back when first installed android, so referred to this one for its section on preferences Code: (Screen loads, so I'm not showing Manifest) public class MyPrefs extends PreferenceActivity { @Override public void onCreate(Bundle bundle) { super.onCreate(bundle); addPreferencesFromResource(R.xml.my_prefs); } } my_prefs.xml <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"> <PreferenceCategory android:title="Value Settings"> <ListPreference android:title="Distance" android:summary="Metric (Kilometer) vs Imperial (Imperial)" android:defaultValue="km" android:key="@+id/distanceMesurement" android:entries="@array/distance" android:entryValues="@array/distance_values"/> <ListPreference android:title="Weight" android:summary="Metric (Kilogram) vs Imperial (Pound)" android:defaultValue="kg" android:key="@+id/weightMesurement" android:entries="@array/weight" android:entryValues="@array/weight_values"/> </PreferenceCategory> </PreferenceScreen> calling MyPrefs from MainScreen Intent i = new Intent(MainScreen.this, MyPrefs.class); startActivity(i); arrays.xml <resources> <string-array name="weight"> <item name="kg">Kilogram (kg)</item> <item name="lb">Pound (lb)</item> </string-array> <string-array name="weight_values"> <item name="kg">kg</item> <item name="lb">lb</item> </string-array> <string-array name="distance"> <item name="km">Kilometer (km)</item> <item name="mi">Mile (mi)</item> </string-array> <string-array name="distance_values"> <item name="km">km</item> <item name="mi">mi</item> </string-array> </resources>

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  • android program crashing (new to platform)

    - by mutio
    So it is my first real Android program (!hello world), but i do have java experience.The program compiles fine, but on running it crashes as soon as it opens (tried debugging, but it crashes before it hits my breakpoint). Was looking for any advice from anyone who is more experienced with android. package org.me.tipcalculator; import android.app.Activity; import android.os.Bundle; import android.widget.TextView; import android.view.View; import android.widget.Button; import android.widget.EditText; import java.text.NumberFormat; import android.util.Log; public class TipCalculator extends Activity { public static final String tag = "TipCalculator"; /** Called when the activity is first created. */ @Override public void onCreate(Bundle icicle) { super.onCreate(icicle); setContentView(R.layout.main); final EditText mealpricefield = (EditText) findViewById(R.id.mealprice); final TextView answerfield = (TextView) findViewById(R.id.answer); final Button button = (Button) findViewById(R.id.calculate); button.setOnClickListener(new Button.OnClickListener() { public void onClick(View v) { try { Log.i(tag, "onClick invoked."); String mealprice = mealpricefield.getText().toString(); Log.i(tag, "mealprice is [" + mealprice + "]"); String answer = ""; if (mealprice.indexOf("$") == -1) { mealprice = "$" + mealprice; } float fmp = 0.0F; NumberFormat nf = java.text.NumberFormat.getCurrencyInstance(); fmp = nf.parse(mealprice).floatValue(); fmp *= 1.2; Log.i(tag, "Total Meal Price (unformatted) is [" + fmp + "]"); answer = "Full Price, including 20% Tip: " + nf.format(fmp); answerfield.setText(answer); Log.i(tag, "onClick Complete"); } catch(java.text.ParseException pe){ Log.i (tag ,"Parse exception caught"); answerfield.setText("Failed to parse amount?"); } catch(Exception e){ Log.e (tag ,"Failed to Calculate Tip:" + e.getMessage()); e.printStackTrace(); answerfield.setText(e.getMessage()); } } } ); } Just in case it helps heres the xml <?xml version="1.0" encoding="UTF-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"> <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="Android Tip Calculator"/> <EditText android:id="@+id/mealprice" android:layout_width="fill_parent" android:layout_height="wrap_content" android:autoText="true"/> <Button android:id="@+id/calculate" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Calculate Tip"/> <TextView android:id= "@+id/answer" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text=""/> </LinearLayout>

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  • How to resolve Android class issues: android.Manifest$permission and android.R?

    - by Maxood
    I have updated software and ADT in my Eclipse a number of times. I am unable to run projects above than 1.5.I have the following errors showing up in my console window after i create a HelloWorld project with API Level 4 (1.6): [2010-04-04 22:21:53 - Framework Resource Parser] Collect resource IDs failed, class android.R not found in E:\Android\android-sdk_r04-windows\android-sdk-windows\platforms\android-1.6\android.jar [2010-04-04 22:21:53 - Framework Resource Parser] Collect permissions failed, class android.Manifest$permission not found in E:\Android\android-sdk_r04-windows\android-sdk-windows\platforms\android-1.6\android.jar [2010-04-04 22:21:54 - Android Framework Parser] failed to collect preference classes How to resolve this issue?

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  • How to set a dialog themed activity width to screen width?

    - by Pentium10
    I am followin the method described here to create an EditText input activity. But the view doesn't fill the width of the screen. How can I tell to fit the screen width? <activity android:name="TextEntryActivity" android:label="My Activity" android:theme="@android:style/Theme.Dialog"/> - <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:orientation="vertical" android:gravity="right" android:layout_height="wrap_content"> <EditText android:text="@+id/txtValue" android:id="@+id/txtValue" android:layout_width="fill_parent" android:layout_height="wrap_content"></EditText> <Button android:text="Done" android:id="@+id/btnDone" android:layout_width="wrap_content" android:layout_height="wrap_content"></Button> </LinearLayout>

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