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  • ASP.NET MVC WebService - Security for Industrial Android Clients

    - by Chris Nevill
    I'm trying to design a system that will allow a bunch of Android devices to securely log into an ASP.NET MVC REST Web service. At present neither side are implemented. However there is an ASP.NET MVC website which the web service will site along side. This is currently using forms authentication. The idea will be that the Android devices will download data from the web service and then be able to work offline storing data in their own local databases, where users will be able to make updates to that data, and then syncing updates back to the main server where possible. The web service will be using HTTPS to prevent calls being intercepted and reduce the risk of calls being intercepted. The system is an industrial system and will not be in used by the general Android population. Instead only authorized Android devices will be authorized by the Web Service to make calls. As such I was thinking of using the Android devices serial number as a username and then a generated long password which the device will be able to pick up - once the device has been authorized server side. The device will also have user logins - but these will not be to log into the web service - just the device itself - since the device and user must be able to work offline. So usernames and passwords will be downloaded and stored on the devices themselves. My question is... what form of security is best setup on the web service? Should it use forms Authentication? Should the username and password just be passed in with each GET/POST call or should it start a session as I have with the website? The Android side causes more confusion. There seems to be a number of options here Spring-Android, Volley, Retrofit, LoopJ, Robo Spice which seems to use the aforementioned Spring, Retrofit or Google HttpClient. I'm struggling to find a simple example which authenticates with a forms based authentication system. Is this because I'm going about this wrong? Is there another option that would better suite this?

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  • How get an Android ListPreference defined in Xml whose values are integers?

    - by Rob Kent
    Is it possible to define a ListPreference in Xml and retrieve the value from SharedPreferences using getInt? Here is my Xml: <ListPreference android:key="@string/prefGestureAccuracyKey" android:title="@string/prefGestureAccuracyTitle" android:summary="@string/prefGestureAccuracyDesc" android:entries="@array/prefNumberAccuracyLabels" android:entryValues="@array/prefNumberAccuracyValues" android:dialogTitle="@string/prefGestureAccuracyDialog" android:persistent="true" android:defaultValue="2" android:shouldDisableView="false" /> And I want to get the value with something like: int val = sharedPrefs.getInt(key, defaultValue). At the moment I have to use getString and parse the result.

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  • How to response to full screen button in websites that has videos

    - by Pinhassi
    I use webview to play videos from varios sites, some of them have a full screen button I would like the webview to respond to the full screen button. If I set webSettings.setUseWideViewPort(false); then video get stuck when clicking the full screen button and I can see the following error on the logcat: 10-09 08:32:27.970: D/gralloc(31814): unmmap pid(1876), vaddr(0x589dc000) 10-09 08:32:27.970: E/gralloc(31814): [GR_MD] unmapping from 0x5786c000, size=33427456 10-09 08:32:27.970: D/gralloc(31814): unmmap pid(1876), vaddr(0x5a9fb000) 10-09 08:32:27.970: E/gralloc(31814): [GR_MD] unmapping from 0x5984d000, size=33427456 10-09 08:32:27.975: D/gralloc(31814): unmmap pid(1876), vaddr(0x5e616000) 10-09 08:32:27.975: E/gralloc(31814): [GR_MD] unmapping from 0x5d42a000, size=33427456 I'm using Android 4.0.1, here is my code: setWebViewSettings(mVideoWebView); String data_html = "<!DOCTYPE HTML> <html xmlns=\"http://www.w3.org/1999/xhtml\" xmlns:og=\"http://opengraphprotocol.org/schema/\" xmlns:fb=\"http://www.facebook.com/2008/fbml\"> <head></head> <body style=\"margin:0 0 0 0; padding:0 0 0 0;\"> <iframe src=\"http://www.dailymotion.com/embed/video/xu4vre\" width=\"300\" height=\"162"\" frameborder=\"0\"></iframe> </body> </html> "; mVideoWebView.loadData(data_html, "text/html", null); public static void setWebViewSettings(WebView webview) { WebSettings webSettings = webview.getSettings(); webSettings.setPluginState(PluginState.ON); webSettings.setJavaScriptEnabled(true); webSettings.setAllowFileAccess(true); webSettings.setLoadWithOverviewMode(false); // zoom y/n webSettings.setUseWideViewPort(true); // true = like desktop webSettings.setPluginsEnabled(true); //webSettings.setAllowContentAccess(true); webSettings.setAllowFileAccess(true); //webSettings.setAllowFileAccessFromFileURLs(true); //webSettings.setAllowUniversalAccessFromFileURLs(true); webSettings.setDatabaseEnabled(true); webSettings.setGeolocationEnabled(true); webSettings.setJavaScriptCanOpenWindowsAutomatically(true); webSettings.setDomStorageEnabled(true); }

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  • Spinner cannot load an integer array?

    - by Adam
    I have an application, which has a Spinner that I want populated with some numbers (4,8,12,16). I created an integer-array object in strings.xml with the items mentioned above, set the entries of the Spinner to the integer-array, and when I run the app I get: 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): java.lang.NullPointerException 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:355) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.widget.ArrayAdapter.getView(ArrayAdapter.java:323) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.widget.AbsSpinner.onMeasure(AbsSpinner.java:198) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.view.View.measure(View.java:7965) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:2989) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:888) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.widget.LinearLayout.measureVertical(LinearLayout.java:350) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.widget.LinearLayout.onMeasure(LinearLayout.java:278) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.view.View.measure(View.java:7965) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:2989) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.widget.FrameLayout.onMeasure(FrameLayout.java:245) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.view.View.measure(View.java:7965) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.widget.LinearLayout.measureVertical(LinearLayout.java:464) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.widget.LinearLayout.onMeasure(LinearLayout.java:278) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.view.View.measure(View.java:7965) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:2989) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.widget.FrameLayout.onMeasure(FrameLayout.java:245) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.view.View.measure(View.java:7965) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.view.ViewRoot.performTraversals(ViewRoot.java:763) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.view.ViewRoot.handleMessage(ViewRoot.java:1632) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.os.Handler.dispatchMessage(Handler.java:99) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.os.Looper.loop(Looper.java:123) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at android.app.ActivityThread.main(ActivityThread.java:4310) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at java.lang.reflect.Method.invokeNative(Native Method) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at java.lang.reflect.Method.invoke(Method.java:521) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 04-19 23:38:48.016: ERROR/AndroidRuntime(10193): at dalvik.system.NativeStart.main(Native Method) As soon as I changed the array to a string-array, this works fine. Is this normal? I realize that I can (and will) just convert the string array values to an int, but it seems weird that I have to. Thanks!

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  • Android - Start service on boot

    - by Gady
    From everything I've seen on Stack Exchange and elsewhere, I have everything set up correctly to start an IntentService when Android OS boots. Unfortunately it is not starting on boot, and I'm not getting any errors. Maybe the experts can help... Manifest: <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.phx.batterylogger" android:versionCode="1" android:versionName="1.0" android:installLocation="internalOnly"> <uses-sdk android:minSdkVersion="8" /> <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" /> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> <uses-permission android:name="android.permission.BATTERY_STATS" /> <application android:icon="@drawable/icon" android:label="@string/app_name"> <service android:name=".BatteryLogger"/> <receiver android:name=".StartupIntentReceiver"> <intent-filter> <action android:name="android.intent.action.BOOT_COMPLETED" /> </intent-filter> </receiver> </application> </manifest> BroadcastReceiver for Startup: package com.phx.batterylogger; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; public class StartupIntentReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { Intent serviceIntent = new Intent(context, BatteryLogger.class); context.startService(serviceIntent); } } UPDATE: I tried just about all of the suggestions below, and I added logging such as Log.v("BatteryLogger", "Got to onReceive, about to start service"); to the onReceive handler of the StartupIntentReceiver, and nothing is ever logged. So it isn't even making it to the BroadcastReceiver. I think I'm deploying the APK and testing correctly, just running Debug in Eclipse and the console says it successfully installs it to my Xoom tablet at \BatteryLogger\bin\BatteryLogger.apk. Then to test, I reboot the tablet and then look at the logs in DDMS and check the Running Services in the OS settings. Does this all sound correct, or am I missing something? Again, any help is much appreciated.

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  • FileNotFoundException while trying to convert contacts to Vcard

    - by AndRi
    Hi I m trying to convert the contacts on emulator to VCard format using the code below AssetFileDescriptor afd =openAssetFileDescriptor(Contacts.CONTENT_VCARD_URI ,"r") The stack Trace says java.io.FileNotFoundException No file at content://com.android.contacts/contacts/as_vcard Do we need to attach a file to the URI ? Is there some other way to convert Contacts to Vcard in Android?

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  • Different positions in ViewPager

    - by Kalai Selvan.G
    In my Application am using ViewPager to swipe the images,which comes through webservice as URL. Everything goes smoothly,the problem is while swiping myself getting the position as collapsed one.. Swipe left-right: positions are 1,2,3,4,5,etc.. if i stops swiping at 5th pos and started to Swipe from right-left: positions are 2,1...why this happens? I need to catch the position of the imageURL to find out the ID of the specific image and so i need to download and set it as wallpaper.. Normally while we swipe from right-left,the positions should decrease like 4,3,2,1. Also in debugger mode i got some start position,end position,last position with different values.. Any Clue about ViewPager. Here is my code: public class ImagePagerActivity extends BaseActivity { private ViewPager pager; private DisplayImageOptions options; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.ac_image_pager); Bundle bundle = getIntent().getExtras(); String[] imageUrls = bundle.getStringArray(Extra.IMAGES); int pagerPosition = bundle.getInt(Extra.IMAGE_POSITION, 0); options = new DisplayImageOptions.Builder() .showImageForEmptyUrl(R.drawable.image_for_empty_url) .cacheOnDisc() .decodingType(DecodingType.MEMORY_SAVING) .build(); pager = (ViewPager) findViewById(R.id.pager); pager.setAdapter(new ImagePagerAdapter(imageUrls)); pager.setCurrentItem(pagerPosition); } private class ImagePagerAdapter extends PagerAdapter { private String[] images; private LayoutInflater inflater; ImagePagerAdapter(String[] images) { this.images = images; inflater = getLayoutInflater(); } @Override public void destroyItem(View container, int position, Object object) { ((ViewPager) container).removeView((View) object); } @Override public void finishUpdate(View container) { } @Override public int getCount() { return images.length; } @Override public Object instantiateItem(View view, int position) { final FrameLayout imageLayout = (FrameLayout) inflater.inflate(R.layout.item_pager_image, null); final ImageView imageView = (ImageView) imageLayout.findViewById(R.id.image); final ProgressBar spinner = (ProgressBar) imageLayout.findViewById(R.id.loading); imageLoader.displayImage(images[position], imageView, options, new ImageLoadingListener() { public void onLoadingStarted() { spinner.setVisibility(View.VISIBLE); } public void onLoadingFailed() { spinner.setVisibility(View.GONE); imageView.setImageResource(android.R.drawable.ic_delete); } public void onLoadingComplete() { spinner.setVisibility(View.GONE); } }); ((ViewPager) view).addView(imageLayout, 0); return imageLayout; } @Override public boolean isViewFromObject(View view, Object object) { return view.equals(object); } @Override public void restoreState(Parcelable state, ClassLoader loader) { } @Override public Parcelable saveState() { return null; } @Override public void startUpdate(View container) { } } }

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  • Help with listView in Android

    - by jul
    Hi, I'm just starting with Android and can't find how to display a list in my activity. I get some restaurant data from a web service and I'd like to show the results in a list. The activity, the restaurant class and the layout main.xml are shown below. How can I display, for instance, the list of the restaurant names in the ListView 'list' of my layout? thank you Jul public class Atable extends ListActivity { RestaurantList restaurantList; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); //Here I set restaurantList //Now how can I display, for example, the list of the names of the restaurants } main.xml <LinearLayout android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="wrap_content"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/search" /> <EditText android:id="@+id/search" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1"/> </LinearLayout> <LinearLayout android:orientation="vertical" android:layout_width="wrap_content" android:layout_height="wrap_content"> <ListView android:id="@+id/android:list" android:layout_width="wrap_content" android:layout_height="wrap_content"/> <TextView android:id="@+id/android:empty" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/noresults"/> </LinearLayout> </LinearLayout> Restaurant list class package org.digitalfarm.atable; import java.util.List; public class RestaurantList { private List<Restaurant> restaurants; public List<Restaurant> getRestaurants() { return restaurants; } public void setRestaurants(List<Restaurant> restaurants) { this.restaurants = restaurants; } } Restaurant class package org.digitalfarm.atable; public class Restaurant { private String name; private float latitude; private float longitude; public String getName() { return name; } public void setName(String name) { this.name = name; } public float getLatitude() { return latitude; } public void setLatitude(float latitude) { this.latitude = latitude; } public float getLongitude() { return longitude; } public void setLongitude(float longitude) { this.longitude = longitude; } }

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  • Android: onListItemClick not getting called in ListActivity

    - by user521469
    I'm having problems with my first Android app. I have subclassed ListActivity, and I'm having no luck getting the overridden onListItemClick() to respond to click events. I've read focus can be a problem, but changing focus in the XML files does not seem to work. Here's the relevant bits of code. Anyone see what's I've buggered up? public class Notepadv1 extends ListActivity { private int mNoteNumber = 1; private NotesDbAdapter mDbHelper; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.notepad_list); mDbHelper = new NotesDbAdapter(this); mDbHelper.open(); fillData(); } private void fillData() { // Get all of the notes from the database and create the item list Cursor c = mDbHelper.fetchAllNotes(); startManagingCursor(c); String[] from = new String[] { NotesDbAdapter.KEY_TITLE }; int[] to = new int[] { R.id.text1 }; SimpleCursorAdapter notes = new SimpleCursorAdapter(this, R.layout.notes_row, c, from, to); setListAdapter(notes); } @Override public void onListItemClick (ListView l, View v, int position, long id){ super.onListItemClick(l, v, position, id); AlertDialog alert = new AlertDialog.Builder(this).create(); String message = "row clicked!"; alert.setMessage(message); alert.show(); } notepad_list.xml <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="wrap_content" android:layout_height="wrap_content"> <ListView android:id="@android:id/list" android:layout_width="wrap_content" android:layout_height="wrap_content" android:dividerHeight="6dp"/> <TextView android:id="@android:id/empty" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/no_notes" /> </LinearLayout> And notes_row.xml <?xml version="1.0" encoding="utf-8"?> <TextView android:id="@+id/text1" xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="wrap_content" android:layout_height="60dp" android:focusable="false"/>

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  • Intent filter for browsing XML (specifically rss) in android

    - by Leif Andersen
    I have an activity that I want to run every time the user goes to an xml (specifically rss) page in the browser (at least assuming the user get's it from the list of apps that can support it). I currently already have the current intent filter: <activity android:name=".activities.EpisodesListActivity" android:theme="@android:style/Theme.NoTitleBar"> <intent-filter> <category android:name="android.intent.category.BROWSABLE"></category> <category android:name="android.intent.category.DEFAULT"></category> <action android:name="android.intent.action.VIEW"></action> <data android:scheme="http"></data> </intent-filter> </activity> Now as you can guess, this is an evil intent, as it wants to open whenever a page is requested via http. However, when I ad the line: <data android:mimeType="application/rss+xml"></data> to make it: <activity android:name=".activities.EpisodesListActivity" android:theme="@android:style/Theme.NoTitleBar"> <intent-filter> <category android:name="android.intent.category.BROWSABLE"></category> <category android:name="android.intent.category.DEFAULT"></category> <action android:name="android.intent.action.VIEW"></action> <data android:scheme="http"></data> <data android:mimeType="application/rss+xml"></data> </intent-filter> </activity> The application no longer claims to be able to run rss files. Also, if I change the line to: <data android:mimeType="application/xml"></data> It also won't work (for generic xml file even). So what intent filter do I need to make in order to claim that the activity supports rss. (Also, bonus points if you can tell me how I know what URL it was the user opened. So far, I've always sent that information from one activity to the other using extras). Thank you for your help

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  • Android: ProgressDialog.show() crashes with getApplicationContext

    - by Felix
    I can't seem to grasp why this is happening. This code: mProgressDialog = ProgressDialog.show(this, "", getString(R.string.loading), true); works just fine. However, this code: mProgressDialog = ProgressDialog.show(getApplicationContext(), "", getString(R.string.loading), true); throws the following exception: W/WindowManager( 569): Attempted to add window with non-application token WindowToken{438bee58 token=null}. Aborting. D/AndroidRuntime( 2049): Shutting down VM W/dalvikvm( 2049): threadid=3: thread exiting with uncaught exception (group=0x4001aa28) E/AndroidRuntime( 2049): Uncaught handler: thread main exiting due to uncaught exception E/AndroidRuntime( 2049): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.tastekid.TasteKid/com.tastekid.TasteKid.YouTube}: android.view.WindowManager$BadTokenException: Unable to add window -- token null is not for an application E/AndroidRuntime( 2049): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2401) E/AndroidRuntime( 2049): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2417) E/AndroidRuntime( 2049): at android.app.ActivityThread.access$2100(ActivityThread.java:116) E/AndroidRuntime( 2049): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794) E/AndroidRuntime( 2049): at android.os.Handler.dispatchMessage(Handler.java:99) E/AndroidRuntime( 2049): at android.os.Looper.loop(Looper.java:123) E/AndroidRuntime( 2049): at android.app.ActivityThread.main(ActivityThread.java:4203) E/AndroidRuntime( 2049): at java.lang.reflect.Method.invokeNative(Native Method) E/AndroidRuntime( 2049): at java.lang.reflect.Method.invoke(Method.java:521) E/AndroidRuntime( 2049): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791) E/AndroidRuntime( 2049): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:549) E/AndroidRuntime( 2049): at dalvik.system.NativeStart.main(Native Method) E/AndroidRuntime( 2049): Caused by: android.view.WindowManager$BadTokenException: Unable to add window -- token null is not for an application E/AndroidRuntime( 2049): at android.view.ViewRoot.setView(ViewRoot.java:460) E/AndroidRuntime( 2049): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:177) E/AndroidRuntime( 2049): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91) E/AndroidRuntime( 2049): at android.app.Dialog.show(Dialog.java:238) E/AndroidRuntime( 2049): at android.app.ProgressDialog.show(ProgressDialog.java:107) E/AndroidRuntime( 2049): at android.app.ProgressDialog.show(ProgressDialog.java:90) E/AndroidRuntime( 2049): at com.tastekid.TasteKid.YouTube.onCreate(YouTube.java:45) E/AndroidRuntime( 2049): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1123) E/AndroidRuntime( 2049): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2364) E/AndroidRuntime( 2049): ... 11 more Any ideas why this is happening? I'm calling this from the onCreate method.

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  • Android visibility issue with checkbox

    - by fxi
    Hi all! I´m using a checkbox in my code that when its checked it makes a textview and a editText visibles, but if I uncheck de checkbox they continue being visible instead of dissapear. Here is the code: final CheckBox save = (CheckBox) findViewById(R.id.checkbox); save.setOnClickListener(new OnClickListener() { public void onClick(View v) { // Perform action on clicks, depending on whether it's now checked if (((CheckBox) v).isChecked()) { nameText.setVisibility(1); editName.setVisibility(1); } else { nameText.setVisibility(0); editName.setVisibility(0); } } }); And part of the xml which is inside an Relative Layout: <LinearLayout android:id="@+id/linearLayout3" android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_below = "@+id/linearLayout2"> <TextView android:id="@+id/text" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/name" android:visibility="invisible"/> <EditText android:id="@+id/name" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1" android:visibility="invisible"/> <CheckBox android:id="@+id/checkbox" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/save" /> </LinearLayout> What should i do to make the textView and EditText dissapear when i uncheck the checkbox? Thank you!

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  • android throw InvocationTargetException,How to modify the error

    - by fonter
    ActivityManager am = (ActivityManager)this.getSystemService(this.ACTIVITY_SERVICE); try { clearMethod = am.getClass() .getMethod("clearApplicationUserData", String.class, IPackageDataObserver.class); } catch (Exception e) { Log.e("Error", "Android Error",e); clearMethod = null; } if(clearMethod!=null){ try { clearMethod.invoke(am,"com.android.browser",new ClearUserDataObserver()); } catch (Exception e) { Log.e("Error", "Android Exception",e); } } Exception 05-26 08:34:13.056: ERROR/Error(739): java.lang.reflect.InvocationTargetException 05-26 08:34:13.056: ERROR/Error(739): at android.app.ActivityManager.clearApplicationUserData(ActivityManager.java:475) 05-26 08:34:13.056: ERROR/Error(739): at java.lang.reflect.Method.invokeNative(Native Method) 05-26 08:34:13.056: ERROR/Error(739): at java.lang.reflect.Method.invoke(Method.java:521) 05-26 08:34:13.056: ERROR/Error(739): at com.iwidsets.clear.manager.AndClear.onCreate(AndClear.java:34) 05-26 08:34:13.056: ERROR/Error(739): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1123) 05-26 08:34:13.056: ERROR/Error(739): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2364) 05-26 08:34:13.056: ERROR/Error(739): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2417) 05-26 08:34:13.056: ERROR/Error(739): at android.app.ActivityThread.access$2100(ActivityThread.java:116) 05-26 08:34:13.056: ERROR/Error(739): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794) 05-26 08:34:13.056: ERROR/Error(739): at android.os.Handler.dispatchMessage(Handler.java:99) 05-26 08:34:13.056: ERROR/Error(739): at android.os.Looper.loop(Looper.java:123) 05-26 08:34:13.056: ERROR/Error(739): at android.app.ActivityThread.main(ActivityThread.java:4203) 05-26 08:34:13.056: ERROR/Error(739): at java.lang.reflect.Method.invokeNative(Native Method) 05-26 08:34:13.056: ERROR/Error(739): at java.lang.reflect.Method.invoke(Method.java:521) 05-26 08:34:13.056: ERROR/Error(739): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791) 05-26 08:34:13.056: ERROR/Error(739): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:549) 05-26 08:34:13.056: ERROR/Error(739): at dalvik.system.NativeStart.main(Native Method) 05-26 08:34:13.056: ERROR/Error(739): Caused by: java.lang.SecurityException: 739 does not have permission:android.permission.CLEAR_APP_USER_DATA to clear datafor process:com.android.browser 05-26 08:34:13.056: ERROR/Error(739): at android.os.Parcel.readException(Parcel.java:1218) 05-26 08:34:13.056: ERROR/Error(739): at android.os.Parcel.readException(Parcel.java:1206) 05-26 08:34:13.056: ERROR/Error(739): at android.app.ActivityManagerProxy.clearApplicationUserData(ActivityManagerNative.java:2016) 05-26 08:34:13.056: ERROR/Error(739): ... 17 more

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  • android logging sdcard

    - by Abhi Rao
    Hello, With Android-Emulator I am not able to write/create a file on the SD Card (for logging). Here is what I have done so far - Run mksdcard 8192K C:\android-dev\emu_sdcard\emu_logFile - Create a new AVD, when assign emu_logFile to it so that when I view the AVD Details it says C:\android-dev\emu_sdcard\emu_logFile against the field "SD Card" - Here is the relevant code public class ZLogger { static PrintWriter zLogWriter = null; private static void Initialize() { try { File sdDir = Environment.getExternalStorageDirectory(); if (sdDir.canWrite()) { : File logFile = new File (sdDir, VERSION.RELEASE + "_" + ".log"); FileWriter logFileWriter = new FileWriter(logFile); zLogWriter = new PrintWriter(logFileWriter); zLogWriter.write("\n\n - " + date + " - \n"); } } catch (IOException e) { Log.e("ZLogger", "Count not write to file: " + e.getMessage()); } } sdDir.canWrite returns false - please note it not the exception from adb shell when I do ls I see sdcard as link to /mnt/sdcard. When I do ls -l /mnt here is what I see ls -l /mnt ls -l /mnt drwxr-xr-x root system 2010-12-24 03:41 asec drwx------ root root 2010-12-24 03:41 secure d--------- system system 2010-12-24 03:41 sdcard whereas if I go to the directory where I created emu_sdcard - I see a lock has been issued, as shown here C:dir android-dev\emu_sdcard Volume in drive C is Preload Volume Serial Number is A4F3-6C29 Directory of C:\android-dev\emu_sdcard 12/24/2010 03:41 AM . 12/24/2010 03:41 AM .. 12/24/2010 03:17 AM 8,388,608 emu_logFile 12/24/2010 03:41 AM emu_logFile.lock 1 File(s) 8,388,608 bytes 3 Dir(s) 50,347,704,320 bytes free I have looked at these and other SO questions Android Emulator sdcard push error: Read-only file system (2) Not able to view SDCard folder in the FileExplorer of Android Eclipse I have added the following to AndroidManifest.xml **uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" ** Please let me know your thoughts - what am I missing here? Why does canWrite return false? What should I do to add permissions to sdcard?

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  • Format for storing contacts in a database

    - by Gart
    I'm thinking of the best way to store personal contacts in a database for a business application. The traditional and straightforward approach would be to create a table with columns for each element, i.e. Name, Telephone Number, Job title, Address, etc... However, there are known industry standards for this kind of data, like for example vCard, or hCard, or vCard-RDF/XML or even Windows Contacts XML Schema. Utilizing an standard format would offer some benefits, like inter-operablilty with other systems. But how can I decide which method to use? The requirements are mainly to store the data. Search and ordering queries are highly unlikely but possible. The volume of the data is 100,000 records at maximum. My database engine supports native XML columns. I have been thinking to use some XML-based format to store the personal contacts. Then it will be possible to utilize XML indexes on this data, if searching and ordering is needed. Is this a good approach? Which contacts format and schema would you recommend for this?

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  • Why Your Android Phone Isn’t Getting Operating System Updates and What You Can Do About It

    - by Chris Hoffman
    Several times a year, Google releases a new version of Android with new features and performance improvements. Unfortunately, most Android devices in the wild will never get the update. New Android users are often disappointed to discover that their shiny new smartphone won’t get any updates – or worse, that it was running old software from the moment they bought it. Image Credit: Johan Larsson on Flickr Why Your Android Phone Isn’t Getting Operating System Updates and What You Can Do About It How To Delete, Move, or Rename Locked Files in Windows HTG Explains: Why Screen Savers Are No Longer Necessary

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  • Android 3.0 Music Player Video Preview

    - by Gopinath
    Earlier this week, some folks over on the XDA developers forum got their hands on a leaked test build of a revamped Android music player that could possibly be shipping with Android’s next OS upgrade, Honeycomb. This evening the footage was spotted by Engadget, and now the word is spreading like wildfire: Android is going to get a default music player that isn’t totally mediocre. via TechCrunch This article titled,Android 3.0 Music Player Video Preview, was originally published at Tech Dreams. Grab our rss feed or fan us on Facebook to get updates from us.

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  • Proper way to implement Android XML onClick attribute in Activity

    - by Austyn Mahoney
    I have used the android:onClick attribute extensively in my XML layouts for my Android application. Example: <Button android:id="@+id/exampleButton" android:onClick="onButtonClick" /> Is it proper to create an Interface to enforce the implementation of those onClick methods in Activities that use that layout file? public interface MyButtonInterface { public onButtonClick(View v); }

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  • How to Run Android Apps on Your Desktop the Easy Way

    - by YatriTrivedi
    Ever feel like running an Android app on your Windows machine? Using BlueStacks, you can easily get apps from your Android device to your desktop or laptop without any complicated set up or fussing with the Android SDK. How to Run Android Apps on Your Desktop the Easy Way HTG Explains: Do You Really Need to Defrag Your PC? Use Amazon’s Barcode Scanner to Easily Buy Anything from Your Phone

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  • Continue with Java for pc or go to android? [on hold]

    - by Chris London
    so I have been learning java from Deitel's learn java 9th edition. I am up to GUI's and a have a pretty good grasp on OOP etc. I want to go straight to the mobile app development scene, I believe I will learn a fair bit there on using API's, and other tools to develop apps. I am not sure weather I should carry on with PC coding (GUI's etc etc) or skip it all and go direct to learning the Android SDK. So, should I carry on, learn about sockets, writing and reading files, GUI's for PC etc or get a book and jump into android? Thanks a lot guys.

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  • Android AsyncTask testing problem with Android Test Framework

    - by Vlad
    I have a very simple AsyncTask implementation example and have problem to test it using Android JUnit framework. It works just fine when I instantiate and execute it in normal application. However when it's executed from any of Android Testing framework classes (i.e. AndroidTestCase, ActivityUnitTestCase, ActivityInstrumentationTestCase2 etc) it behaves sarngely: - It executes doInBackground() method correctly - However it doesn't invokes any of its notification methods (onPostExecute(), onProgressUpdate(), etc) -- just silently ignores them whitout showing any errors. This is very simple AsyncTask example package kroz.andcookbook.threads.asynctask; import android.os.AsyncTask; import android.util.Log; import android.widget.ProgressBar; import android.widget.Toast; public class AsyncTaskDemo extends AsyncTask<Integer, Integer, String> { AsyncTaskDemoActivity _parentActivity; int _counter; int _maxCount; public AsyncTaskDemo(AsyncTaskDemoActivity asyncTaskDemoActivity) { _parentActivity = asyncTaskDemoActivity; } @Override protected void onPreExecute() { super.onPreExecute(); _parentActivity._progressBar.setVisibility(ProgressBar.VISIBLE); _parentActivity._progressBar.invalidate(); } @Override protected String doInBackground(Integer... params) { _maxCount = params[0]; for (_counter = 0; _counter <= _maxCount; _counter++) { try { Thread.sleep(1000); publishProgress(_counter); } catch (InterruptedException e) { // Ignore } } } @Override protected void onProgressUpdate(Integer... values) { super.onProgressUpdate(values); int progress = values[0]; String progressStr = "Counting " + progress + " out of " + _maxCount; _parentActivity._textView.setText(progressStr); _parentActivity._textView.invalidate(); } @Override protected void onPostExecute(String result) { super.onPostExecute(result); _parentActivity._progressBar.setVisibility(ProgressBar.INVISIBLE); _parentActivity._progressBar.invalidate(); } @Override protected void onCancelled() { super.onCancelled(); _parentActivity._textView.setText("Request to cancel AsyncTask"); } } This is a test case. Here AsyncTaskDemoActivity is a very simple Activity providing UI for testing AsyncTask in mode: package kroz.andcookbook.test.threads.asynctask; import java.util.concurrent.ExecutionException; import kroz.andcookbook.R; import kroz.andcookbook.threads.asynctask.AsyncTaskDemo; import kroz.andcookbook.threads.asynctask.AsyncTaskDemoActivity; import android.content.Intent; import android.test.ActivityUnitTestCase; import android.widget.Button; public class AsyncTaskDemoTest2 extends ActivityUnitTestCase<AsyncTaskDemoActivity> { AsyncTaskDemo _atask; private Intent _startIntent; public AsyncTaskDemoTest2() { super(AsyncTaskDemoActivity.class); } protected void setUp() throws Exception { super.setUp(); _startIntent = new Intent(Intent.ACTION_MAIN); } protected void tearDown() throws Exception { super.tearDown(); } public final void testExecute() { startActivity(_startIntent, null, null); Button btnStart = (Button) getActivity().findViewById(R.id.Button01); btnStart.performClick(); assertNotNull(getActivity()); } } All this code is working just fine, except the fact that AsynTask doesn't invoke it's notification methods when executed by whithin Android Testing Framework. Any ideas?

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  • Android ListView with alternate color and on focus color

    - by Yogesh
    I need to set alternate color in list view rows but when i do that it removes/ disables the on focus default yellow background I tried with backgroundColor rowView.setBackgroundColor(SOME COLOR); also with backgrounddrwable. rowView.setBackgroundColor(R.drawable.view_odd_row_bg); <!-- Even though these two point to the same resource, have two states so the drawable will invalidate itself when coming out of pressed state. --> <item android:state_focused="true" android:state_enabled="false" android:state_pressed="true" android:drawable="@color/highlight" /> <item android:state_focused="true" android:state_enabled="false" android:drawable="@color/highlight" /> <item android:state_focused="true" android:state_pressed="true" android:drawable="@color/highlight" /> <item android:state_focused="false" android:state_pressed="true" android:drawable="@color/highlight" /> <item android:state_focused="true" android:drawable="@color/highlight" /> but it wont work. is there any way we can set background color and on focus color simultaneously which will work.

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  • android: CheckedTextView cannot be checked?

    - by Yang
    Initially I wanted a checkmark where the text is placed on the left of the checkmark. After searching on this site I found out the best workaround is android:CheckedTextView? However, I found out that the checkmark cannot be changed manually by users. Is it by design? <CheckedTextView xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/autoupdatecheckboxview" android:layout_width="fill_parent" android:layout_height="wrap_content" android:gravity="center_vertical" android:checkMark="?android:attr/listChoiceIndicatorMultiple" android:paddingLeft="6dip" android:paddingRight="6dip" android:text="Pop up a message when new data available" android:typeface="sans" android:textSize="16dip"/>

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  • Java method for android:layout_gravity

    - by André Leitão
    Hi folks, I would like to know if is there a way to call android:layout_gravity property from a java method. I didn't found any method in Android documentation to do it. This is the picture of the layout I want to implement: I know to do it through xml, as following: <FrameLayout xlmns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="wrap_content"> <Button android:layout_gravity="left|center_vertical" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="<" /> <Button android:layout_gravity="right|center_vertical" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text=">" /> </FrameLayout> But in my situation, I need to do it through Java code, because I'll implement another layout views dinamically. To avoid merging xml layout with Java code, I would prefer make all layout using Java. Can you help me? Thanks. André Leitão

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