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• Android SQLiteConstraintException: error code 19: constraint failed

  - by Tom D

  I've seen other questions about this exception, but all of them seem to be resolved with the solution that a row with the primary key specified already exists. This doesn't seem to be the case for me. I have tried replacing all single quotes in my strings with double quotes, but the same problem occurs. I'm trying to insert a row into the Settings table of the SQLite database I've created by doing the following: db.execSQL("DROP TABLE IF EXISTS "+Settings.SETTINGS_TABLE_NAME + ";"); db.execSQL(CREATE_MEDIA_TABLE); db.execSQL(CREATE_SETTINGS_TABLE); Cursor c = getAllSettings(); //If there isn't already a settings row, create a row full of defaults if(c.getCount()==0){ ContentValues cv = new ContentValues(); cv.put(Settings.SETTING_UNIQUE_ID, "'"+Settings.uniqueID+"'"); cv.put(Settings.SETTING_DEVICE_ID, Settings.SETTING_DEVICE_ID_DEFAULT); cv.put(Settings.SETTING_CONNECTION_PREFERENCE, Settings.SETTING_CONNECTION_PREFERENCE_DEFAULT); cv.put(Settings.SETTING_AD_HOC_ENABLED, Settings.SETTING_AD_HOC_ENABLED_DEFAULT); cv.put(Settings.SETTING_SERVER_ADDRESS, Settings.SETTING_SERVER_ADDRESS_DEFAULT); cv.put(Settings.SETTING_RECORDING_MODE, Settings.SETTING_RECORDING_MODE_DEFAULT); cv.put(Settings.SETTING_PREVIEW_ENABLED, Settings.SETTING_PREVIEW_ENABLED_DEFAULT); cv.put(Settings.SETTING_PICTURE_RESOLUTION_X, Settings.SETTING_PICTURE_RESOLUTION_X_DEFAULT); cv.put(Settings.SETTING_PICTURE_RESOLUTION_Y, Settings.SETTING_PICTURE_RESOLUTION_Y_DEFAULT); cv.put(Settings.SETTING_VIDEO_RESOLUTION_X, Settings.SETTING_VIDEO_RESOLUTION_X_DEFAULT); cv.put(Settings.SETTING_VIDEO_RESOLUTION_Y, Settings.SETTING_VIDEO_RESOLUTION_Y_DEFAULT); cv.put(Settings.SETTING_VIDEO_FPS, Settings.SETTING_VIDEO_FPS_DEFAULT); cv.put(Settings.SETTING_AUDIO_BITRATE_KBPS, Settings.SETTING_AUDIO_BITRATE_KBPS_DEFAULT); cv.put(Settings.SETTING_STORE_TO_SD, Settings.SETTING_STORE_TO_SD_DEFAULT); cv.put(Settings.SETTING_STORAGE_LIMIT_MB, Settings.SETTING_STORAGE_LIMIT_MB_DEFAULT); this.db.insert(Settings.SETTINGS_TABLE_NAME, null, cv); } The CREATE_SETTINGS_TABLE string is defined as the following: private static String CREATE_SETTINGS_TABLE = "CREATE TABLE IF NOT EXISTS " + Settings.SETTINGS_TABLE_NAME + "(" + Settings.SETTING_UNIQUE_ID + " TEXT NOT NULL PRIMARY KEY, " + Settings.SETTING_DEVICE_ID + " TEXT NOT NULL , " + Settings.SETTING_CONNECTION_PREFERENCE + " TEXT NOT NULL CHECK("+Settings.SETTING_CONNECTION_PREFERENCE+" IN("+Settings.SETTING_CONNECTION_PREFERENCE_ALLOWED+")), " + Settings.SETTING_AD_HOC_ENABLED + " TEXT NOT NULL CHECK("+Settings.SETTING_AD_HOC_ENABLED+" IN("+Settings.SETTING_AD_HOC_ENABLED_ALLOWED+")), " + Settings.SETTING_SERVER_ADDRESS + " TEXT NOT NULL, " + Settings.SETTING_RECORDING_MODE + " TEXT NOT NULL CHECK("+Settings.SETTING_RECORDING_MODE+" IN("+Settings.SETTING_RECORDING_MODE_ALLOWED+")), " + Settings.SETTING_PREVIEW_ENABLED + " TEXT NOT NULL CHECK("+Settings.SETTING_PREVIEW_ENABLED+" IN("+Settings.SETTING_PREVIEW_ENABLED_ALLOWED+")), " + Settings.SETTING_PICTURE_RESOLUTION_X + " TEXT NOT NULL, " + Settings.SETTING_PICTURE_RESOLUTION_Y + " TEXT NOT NULL, " + Settings.SETTING_VIDEO_RESOLUTION_X + " TEXT NOT NULL, " + Settings.SETTING_VIDEO_RESOLUTION_Y + " TEXT NOT NULL, " + Settings.SETTING_VIDEO_FPS + " TEXT NOT NULL, " + Settings.SETTING_AUDIO_BITRATE_KBPS + " TEXT NOT NULL, " + Settings.SETTING_STORE_TO_SD + " TEXT NOT NULL CHECK("+Settings.SETTING_STORE_TO_SD+" IN("+Settings.SETTING_STORE_TO_SD_ALLOWED+")), " + Settings.SETTING_STORAGE_LIMIT_MB + " TEXT NOT NULL )"; However, when I execute my insert, I always get: 03-19 19:37:36.974: ERROR/Database(386): Error inserting server_address='0.0.0.0' storage_limit='-1' connection='none' preview_enabled='0' sd_enabled='1' video_fps='15' audio_bitrate='96' device_id='-1' recording_mode='none' picture_resolution_x='-1' picture_resolution_y='-1' unique_id='000000000000000' adhoc_enable='0' video_resolution_x='320' video_resolution_y='240' 03-19 19:45:34.284: ERROR/Database(446): android.database.sqlite.SQLiteConstraintException: error code 19: constraint failed It seems as if all the columns in my insert are not null. The row's primary key HAS to be unique, because it's the only row in the table. Therefore, the only thing I can think of is my CHECK conditions aren't true. Here are the predefined strings I'm using: public static final String SETTING_UNIQUE_ID = "unique_id"; public static final String SETTING_DEVICE_ID = "device_id"; public static final String SETTING_DEVICE_ID_DEFAULT = "'-1'"; public static final String SETTING_CONNECTION_PREFERENCE = "connection"; public static final String SETTING_CONNECTION_PREFERENCE_3G = "'3g'"; public static final String SETTING_CONNECTION_PREFERENCE_WIFI = "'wifi'"; public static final String SETTING_CONNECTION_PREFERENCE_NONE = "'none'"; public static final String SETTING_CONNECTION_PREFERENCE_ALLOWED = SETTING_CONNECTION_PREFERENCE_3G+","+SETTING_CONNECTION_PREFERENCE_WIFI+","+SETTING_CONNECTION_PREFERENCE_NONE; public static final String SETTING_CONNECTION_PREFERENCE_DEFAULT = SETTING_CONNECTION_PREFERENCE_NONE; public static final String SETTING_AD_HOC_ENABLED = "adhoc_enable"; public static final String SETTING_AD_HOC_ENABLED_ALLOWED = TRUE+","+FALSE; public static final String SETTING_AD_HOC_ENABLED_DEFAULT = FALSE; public static final String SETTING_SERVER_ADDRESS = "server_address"; public static final String SETTING_SERVER_ADDRESS_DEFAULT = "'0.0.0.0'"; public static final String SETTING_RECORDING_MODE = "recording_mode"; public static final String SETTING_RECORDING_MODE_VIDEO = "'video'"; public static final String SETTING_RECORDING_MODE_AUDIO = "'audio'"; public static final String SETTING_RECORDING_MODE_PICTURE = "'picture'"; public static final String SETTING_RECORDING_MODE_NONE = "'none'"; public static final String SETTING_RECORDING_MODE_ALLOWED = SETTING_RECORDING_MODE_VIDEO+","+SETTING_RECORDING_MODE_AUDIO+","+SETTING_RECORDING_MODE_PICTURE+","+SETTING_RECORDING_MODE_NONE; public static final String SETTING_RECORDING_MODE_DEFAULT = SETTING_RECORDING_MODE_NONE; public static final String SETTING_PREVIEW_ENABLED = "preview_enabled"; public static final String SETTING_PREVIEW_ENABLED_ALLOWED = TRUE+","+FALSE; public static final String SETTING_PREVIEW_ENABLED_DEFAULT = FALSE; public static final String SETTING_PICTURE_RESOLUTION_X = "picture_resolution_x"; public static final String SETTING_PICTURE_RESOLUTION_X_DEFAULT = "'-1'"; public static final String SETTING_PICTURE_RESOLUTION_Y = "picture_resolution_y"; public static final String SETTING_PICTURE_RESOLUTION_Y_DEFAULT = "'-1'"; public static final String SETTING_VIDEO_RESOLUTION_X = "video_resolution_x"; public static final String SETTING_VIDEO_RESOLUTION_X_DEFAULT = "'320'"; public static final String SETTING_VIDEO_RESOLUTION_Y = "video_resolution_y"; public static final String SETTING_VIDEO_RESOLUTION_Y_DEFAULT = "'240'"; public static final String SETTING_VIDEO_FPS = "video_fps"; public static final String SETTING_VIDEO_FPS_DEFAULT = "'15'"; public static final String SETTING_AUDIO_BITRATE_KBPS = "audio_bitrate"; public static final String SETTING_AUDIO_BITRATE_KBPS_DEFAULT = "'96'"; public static final String SETTING_STORE_TO_SD = "sd_enabled"; public static final String SETTING_STORE_TO_SD_ALLOWED = TRUE+","+FALSE; public static final String SETTING_STORE_TO_SD_DEFAULT = TRUE; public static final String SETTING_STORAGE_LIMIT_MB = "storage_limit"; public static final String SETTING_STORAGE_LIMIT_MB_DEFAULT = "'-1'"; public static final String SETTING_CLIP_LENGTH_SECONDS = "clip_length"; public static final String SETTING_CLIP_LENGTH_SECONDS_DEFAULT = "'300'"; Does anyone see what could be going on? I'm stumped. Thanks in advance.

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• android listview loadmore button with xml parsing

  - by user1780331

  Hi i have to developed listview with load more button using xml parsing in android application. Here i have faced some problem. my xml feed is empty means how can hide the load more button on last page. i have used below code here. public class CustomizedListView extends Activity { // All static variables private String URL = "http://dev.mmm.com/xctesting/xcart444pro/retrieve.php?page=1"; // XML node keys static final String KEY_SONG = "Order"; static final String KEY_TITLE = "orderid"; static final String KEY_DATE = "date"; static final String KEY_ARTIST = "payment_method"; int current_page = 1; ListView lv; LazyAdapter adapter; ProgressDialog pDialog; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); lv = (ListView) findViewById(R.id.list); ArrayList<HashMap<String, String>> songsList = new ArrayList<HashMap<String, String>>(); XMLParser parser = new XMLParser(); String xml = parser.getXmlFromUrl(URL); // getting XML from URL Document doc = parser.getDomElement(xml); // getting DOM element NodeList nl = doc.getElementsByTagName(KEY_SONG); // looping through all song nodes <song> for (int i = 0; i < nl.getLength(); i++) { // creating new HashMap HashMap<String, String> map = new HashMap<String, String>(); Element e = (Element) nl.item(i); // adding each child node to HashMap key => value map.put(KEY_ID, parser.getValue(e, KEY_ID)); map.put(KEY_TITLE, parser.getValue(e, KEY_TITLE)); map.put(KEY_ARTIST, parser.getValue(e, KEY_ARTIST)); songsList.add(map); } Button btnLoadMore = new Button(this); btnLoadMore.setText("Load More"); btnLoadMore.setBackgroundResource(R.drawable.lgnbttn); // Adding Load More button to lisview at bottom lv.addFooterView(btnLoadMore); // Getting adapter adapter = new LazyAdapter(this, songsList); lv.setAdapter(adapter); btnLoadMore.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View arg0) { // Starting a new async task new loadMoreListView().execute(); } }); } private class loadMoreListView extends AsyncTask<Void, Void, Void> { @Override protected void onPreExecute() { // Showing progress dialog before sending http request pDialog = new ProgressDialog( CustomizedListView.this); pDialog.setMessage("Please wait.."); //pDialog.setIndeterminateDrawable(getResources().getDrawable(R.drawable.my_progress_indeterminate)); pDialog.setIndeterminate(true); pDialog.setCancelable(false); pDialog.show(); pDialog.setContentView(R.layout.custom_dialog); } protected Void doInBackground(Void... unused) { current_page += 1; // Next page request URL = "http://dev.mmm.com/xctesting/xcart444pro/retrieve.php?page=" + current_page; ArrayList<HashMap<String, String>> songsList = new ArrayList<HashMap<String, String>>(); XMLParser parser = new XMLParser(); String xml = parser.getXmlFromUrl(URL); // getting XML from URL Document doc = parser.getDomElement(xml); // getting DOM element NodeList nl = doc.getElementsByTagName(KEY_SONG); NodeList nl = doc.getElementsByTagName(KEY_SONG); if (nl.getLength() == 0) { btnLoadMore.setVisibility(View.GONE); pDialog.dismiss(); } else // looping through all item nodes <item> for (int i = 0; i < nl.getLength(); i++) { // creating new HashMap HashMap<String, String> map = new HashMap<String, String>(); Element e = (Element) nl.item(i); // adding each child node to HashMap key => value map.put(KEY_ID, parser.getValue(e, KEY_ID)); map.put(KEY_TITLE, parser.getValue(e, KEY_TITLE)); map.put(KEY_ARTIST, parser.getValue(e, KEY_ARTIST)); songsList.add(map); } // get listview current position - used to maintain scroll position int currentPosition = lv.getFirstVisiblePosition(); // Appending new data to menuItems ArrayList adapter = new LazyAdapter( CustomizedListView.this, songsList); lv.setAdapter(adapter); lv.setSelectionFromTop(currentPosition + 1, 0); } }); return (null); } protected void onPostExecute(Void unused) { // closing progress dialog pDialog.dismiss(); } } } EDIT: Here i have to run the app means the listview is displayed on perpage 4 items.my last page having 1 item.please refer this screenshot:http://screencast.com/t/fTl4FETd In last page i have to click the load more button means have to go next activity and successfully hide the button on empty page..please refer this screenshot:http://screencast.com/t/wyG5zdp3r i have to check the condition for empty page: if (nl.getLength() == 0) { btnLoadMore.setVisibility(View.GONE); pDialog.dismiss(); } How can i write the conditon fot last page?????pleas ehelp me Here i wish to need the o/p is hide the button on last page. Please help me.how can i check the condition.give me some code programmatically.

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• How to select camera by index when running VLC from cmd?

  - by Ole Jak

  When I start VLC from cmd how\is it possible to select a camera for directshow source by index (for example i have camera "A" and camera "B" so i would say 0 for "A" and 1 for "B") i do not know device name and i do not know camera name - only its index (0, 1...)?

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• Android app to remote control Samsung Smart TVs

  - by Gopinath

  Smart TV Remote is an unofficial Android app that lets you control Samsung Smart TVs connected over a local WiFi network. This app comes very handy when you want to control your TV which is not in line of sight of your TV remote control or just want to use your mobile phone/tablet to control the TV. Setting up a TV  is very easy using auto scan feature . Once the TV is setup, you are all set to start using the app as a remote control. A traditional remote controls makes use of infra red technology and it needs to be in the line of sight of the TV receiver to work. But this app make use of WiFi technology which give it flexibility of controlling the TV as long as the mobile & TV is connected to WiFi network. It just works even if the TV is behind a wall. The App provides very easy to use options to switch between channels and separate remotes with media controls, smart hub features and a numeric key pad if you want to navigate to a channel through its number. The App also provides a home screen widget with volume controls and channel navigation options. I use  this App to control Samsung E Series Smart Tv at home and it works very well. I’m impressed by the ease at which it allows to setup a TV, support for multiple TVs, controlling the TV though I’m not in the line of sight and using volume buttons of smart phone to control volume of TV. What’s annoying and missing with the app As advertised the app works very well in controlling Samsung TVs (B-, C-, D- E-, and F-Series) except it is very painful to move mouse pointer while browsing web on TV. When you try to move mouse pointer using the App, it mouse painfully slow especially. I gave us using the app to control mouse pointer after trying couple of times. I installed this App thinking that it may help me browse web on Smart TVs, especially a key board support to type web urls. App does not supports entering text either while browsing web or searching through Smart TV apps like YouTube, App Store etc. Developers of this App never advertised keyboard support so no complaints about this. But it would be very helpful if the developers allow this app use as a keyboard and rescue me from the pain of typing text using TV Remote control. Overall this is a very nice app and worth trying out – Download Smart TV Remote from Google Play

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• Getting ADB to run

  - by gh0st_h4wk

  I've recently installed ubuntu and I need Android SDK (and subsequently, adb) in order to develop my apps to college. The fact is that, no matter what I do, I can't get adb to work. Exporting its place to the PATH didn't worked. I only get "file or directory not found" error while this are the contents of the PATH variable: renan@RocketQueen:~$ echo $PATH /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/home/renan/adt/sdk/tools:/home/renan/adt/sdk/platform-tools I don't want to install android-tools-adb/fastboot because they're outdate when compared to SDK Manager ones. What do I need to do in order for it to work from anywhere when called from terminal?

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• What percentage of revenue would be fair for app stores to take? [closed]

  - by Tyler Collier

  Apple takes 30% of revenue from app sales on the iPhone app store. Now Apple does the same with the Mac app store. Google also takes a 30% cut in the Android Market. These seem pretty steep. What percentage do you think would be fair and good for both you as a developer/vendor and Apple/Google? What's a happier middle ground? 20%? If the answer you give is less than 30% but you are selling apps in the app store or android market, please explain why you are willing to, and what benefits Apple and Google would see from reducing their cuts.

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• Has anyone got Ubuntu Touch working on Nexus 5?

  - by user1628

  I have been debating whether to get a nexus 5 phone since it came out. My only fear is that I won't like android. I love ubuntu, I know that I'd love ubuntu. So I have a few question related to Ubuntu Touch: Is it easy or possible to switch between Ubuntu Touch and Android? Would I have to keep hacking the phone? Can I dual boot them? Would I lose my data every time I switch? The nexus 5 isn't mentioned here: https://wiki.ubuntu.com/Touch/Devices Does that mean it simply won't work if I follow the porting instructions? Would I have to do a bit of hacking? Has anyone got it working? Will it eventually be supported?

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• When I run Android SDK from terminal, it shows error. How to fix it?

  - by diflame

  Exception in thread "main" java.lang.UnsatisfiedLinkError: no swt-gtk-3550 or swt-gtk in swt.library.path, java.library.path or the jar file at org.eclipse.swt.internal.Library.loadLibrary(Unknown Source) at org.eclipse.swt.internal.Library.loadLibrary(Unknown Source) at org.eclipse.swt.internal.C.<clinit>(Unknown Source) at org.eclipse.swt.internal.Converter.wcsToMbcs(Unknown Source) at org.eclipse.swt.internal.Converter.wcsToMbcs(Unknown Source) at org.eclipse.swt.widgets.Display.<clinit>(Unknown Source) at com.android.sdkmanager.Main.showSdkManagerWindow(Main.java:328) at com.android.sdkmanager.Main.doAction(Main.java:316) at com.android.sdkmanager.Main.run(Main.java:118) at com.android.sdkmanager.Main.main(Main.java:101)

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• Android Array Lag?

  - by Mike

  I am making a platform game for Android. It is sort of a tile based game. I added bullets and enemies with AI and a bunch of tile types. I created a simple map with no Enemies. Everything was running well and smooth until I shot a bunch of bullets randomly everywhere. A couple of hundreds of bullets later, the FPS lowered. I made a test to find out if the bullets were the problem so I made another simple map with just a tile to stand on and left it for a while. Minutes later, I played around with it a bit to check if the FPS changed and it didnt. I reloaded the same map and shot a lot of bullets. Minutes later, the FPS was visibly lower even after the number of bullets were zero. Points to note: Programmed FPS is 30 Tested on a Samsung Galaxy Y and Samsung Galaxy W Any tile, enemy, bullet that is off screen is not drawn to prevent lag Bullets collide with Tiles (if they dont collide with in 450 frames, they are removed from the array) I used List bullets = new ListArray(); I used bullets.add(new Bullet(x, y, params...)); I used for(...){ if(...){ bullets.remove(i); } } Code for bullet: private void drawBullets(Canvas canvas) { for (int i = 0; i < bullets.size(); i++) { Bullet b = bullets.get(i); b.update(canvas); //updates physics if (b.t > blm) { //if the bullet is past its expiry bullets.remove(i); i--; } else { if (svx((b.x)) > 0 && svx(b.x) < width && svy((b.y)) > 0 && svy(b.y) < height) { // if bullet is not off screen b.draw(canvas); // draw the bullet } } } } I tried searching for solutions and references but I have no luck. I'm guessing that the lag has something to do with the Array and the Bullets or Classes that I've loaded? I'm not sure! Someone please help! Thanks in advance! :)

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• onActivityResult method not being called Android

  - by Chintan

  I am trying to send data from child activity to parent. But somehow, onActivityResult(..) is not getting called. here is code Parent activity selectedText.setOnTouchListener(new OnTouchListener() { public boolean onTouch(View v, MotionEvent event) { if (event.getActionMasked() == MotionEvent.ACTION_DOWN) { Intent intent = new Intent(Parents.this,Child.class); startActivityForResult(intent, 1); } return true; } }); @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { switch (requestCode) { case 1: if (resultCode == RESULT_OK) { if (data.hasExtra("selText")) { selectedText.setText(data.getExtras().getString( "selText")); } break; } } Child Activity: I can see selected value set in the setResult(). But after finish of child activity, it's not going back to parent activity. textListView.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> arg0, View arg1, int myItemInt, long arg3) { selectedFromList =(String) (textListView.getItemAtPosition(myItemInt)); Intent data = new Intent(); data.putExtra("selText", selectedFromList); setResult(RESULT_OK,data); finish(); } });

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• Why does my app not work on Android 2.3?

  - by user455141

  Hi all, just a quick question about Android 2.3. I've been receiving reports from people using my app that it crashes on startup in Android 2.3. It works absolutely fine on the other SDK versions as far as I can tell. Since I don't have a phone running Android 2.3 I can't test out where the error is, which makes it very frustrating to deal with! Has anyone got any ideas what might have changed in Android 2.3 to mean the app crashes? Has anyone else had a similar problem? The following are ideas I've had for what might be causing it... Splash screen - on my main activity I trigger this in onCreate and it displays for 3 secs before finishing I'm using the GPS capability of Android, has this vastly changed in 2.3 to mean that something's going wrong? There's been a fundamental change in application startup in 2.3 that I'm not aware of. Any feedback would be much appreciated!

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• Can Android Applications ( using libraries build from NDK ) be used on both x86 & ARM platform?

  - by Vibgyor

  I am going to build an Android application in which I want to use a C library. So, I am planning to use NDK along with the SDK. NDK supports ARMv5, ARmv7 and x86 instruction set. Now, if I build an Android application using ARMv5 , will it run on Android phones based on Intel ( x86 ) platform (am I missing something ?)? If not, then what is the way by which I can build an ANdroid application ( which uses some C libraries underneath ) that can run on all the Android phones irrespective of the underneath platform? Vibgyor

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• findViewById undefined

  - by areyling

  Eclipse is marking findViewById(int) as undefined; it was doing the same thing for getResources(), but I was able to get around that by calling context.getResources() instead (as seen below) and can't seem to find a similar workaround for findViewById. Here is the code: package com.myapp.android.MyWidget; import android.appwidget.AppWidgetProvider; import android.appwidget.AppWidgetManager; import android.content.Context; import android.content.ComponentName; import android.content.pm.PackageManager; import android.content.res.Resources; import android.util.Log; import android.view.View; import android.widget.RemoteViews; import android.widget.Button; import android.os.Bundle; public class MyWidget extends AppWidgetProvider { private static String[] states; @Override public void onEnabled(Context context) { final Button button = (Button) findViewById(R.id.widget_state_button); states = context.getResources().getStringArray(R.array.states); } Is there another package I need to import for findViewById? Thanks in advance.

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• How do I place widgets above and below a listview with Relative Layout

  - by Jay Askren

  I have a list view and want to put stuff both above(on the y axis) and below(y axis) it including images, text views, and a row of buttons. Below is a simplified version of what I am creating. Unfortunately the list covers(i.e. above on the z axis) the header so the header text is not visible instead of being underneath (on the y axis) <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="wrap_content" android:layout_height="wrap_content"> <TextView android:id="@+id/footer" android:text="footer" android:layout_height="wrap_content" android:layout_width="fill_parent" android:layout_alignParentBottom="true" /> <ListView android:id="@+id/list_view" android:layout_height="fill_parent" android:layout_width="fill_parent" android:layout_above="@id/footer" android:background="#ff9999ff"/> <TextView android:id="@+id/header" android:text="header" android:layout_height="wrap_content" android:layout_width="fill_parent" android:layout_alignParentTop="true" android:layout_above="@id/list_view" android:baselineAlignBottom="false" /> </RelativeLayout> Here is the corresponding Activity class: public class SampleListActivity extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.list_activity); } }

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• Get Eclipse to recognize the maps api

  - by NickTFried

  Hi I'm developing an Android app and trying to incorporate maps into one of my sub-activities. Having followed all of the instructions from Android, my java file will not recognize the "MapActivity" or the import statements to include the needed api. Here is my XML manifest and my class file. <?xml version="1.0" encoding="utf-8"?> <uses-permission android:name="android.permissions.INTERNET"/> <uses-permission android:name="android.permissions.ACCESS_FINE_LOCATION"/> <application android:icon="@drawable/icon" android:label="@string/app_name"> <uses-library android:name="com.google.android.maps" /> <activity android:name=".CadetCommand" android:label="@string/app_name"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <activity android:name="RedLight"></activity> <activity android:name="PTCalculator"></activity> </application> <uses-sdk android:minSdkVersion="7"/> here is my java file: package edu.elon.cs.mobile; import com.google.android.maps.MapActivity; import com.google.android.maps.MapView; import android.os.Bundle; public class LandNav extends MapActivity{ } Any suggestion would help.

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• Handling android player errors

  - by stack hoss

  I am anew android developer and i made ashoutcast radio player and work good but when i open app it work for afew time but suddenly stop and need to press stop and play again but i need Handling android player errors to automatic restart on errors package com.test.test; import java.io.IOException; import android.app.Notification; import android.app.NotificationManager; import android.app.PendingIntent; import android.app.Service; import android.content.Context; import android.content.Intent; import android.content.SharedPreferences; import android.media.AudioManager; import android.media.AudioManager.OnAudioFocusChangeListener; import android.media.MediaPlayer; import android.os.IBinder; import android.preference.PreferenceManager; import android.util.Log; public class StreamService extends Service { private static final String TAG = "StreamService"; MediaPlayer mp; boolean isPlaying; Intent MainActivity; SharedPreferences prefs; SharedPreferences.Editor editor; Notification n; NotificationManager notificationManager; // Change this int to some number specifically for this app int notifId = 85; private OnAudioFocusChangeListener focusChangeListener = new OnAudioFocusChangeListener() { public void onAudioFocusChange(int focusChange) { switch (focusChange) { case (AudioManager.AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK) : // Lower the volume while ducking. mp.setVolume(0.2f, 0.2f); break; case (AudioManager.AUDIOFOCUS_LOSS_TRANSIENT) : mp.pause(); break; case (AudioManager.AUDIOFOCUS_LOSS) : mp.stop(); break; case (AudioManager.AUDIOFOCUS_GAIN) : // Return the volume to normal and resume if paused. mp.setVolume(1f, 1f); mp.start(); break; default: break; } } }; @Override public IBinder onBind(Intent arg0) { // TODO Auto-generated method stub return null; } @SuppressWarnings("deprecation") @Override public void onCreate() { super.onCreate(); Log.d(TAG, "onCreate"); // Init the SharedPreferences and Editor prefs = PreferenceManager.getDefaultSharedPreferences(getApplicationContext()); editor = prefs.edit(); // Set up the buffering notification notificationManager = (NotificationManager) getApplicationContext() .getSystemService(NOTIFICATION_SERVICE); Context context = getApplicationContext(); String notifTitle = context.getResources().getString(R.string.app_name); String notifMessage = context.getResources().getString(R.string.buffering); n = new Notification(); n.icon = R.drawable.ic_launcher; n.tickerText = "Buffering"; n.when = System.currentTimeMillis(); Intent nIntent = new Intent(context, MainActivity.class); nIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_SINGLE_TOP); PendingIntent pIntent = PendingIntent.getActivity(context, 0, nIntent, 0); n.setLatestEventInfo(context, notifTitle, notifMessage, pIntent); notificationManager.notify(notifId, n); // It's very important that you put the IP/URL of your ShoutCast stream here // Otherwise you'll get Webcom Radio String url = "http://47.182.19.93:9888/"; mp = new MediaPlayer(); mp.setAudioStreamType(AudioManager.STREAM_MUSIC); try { mp.reset(); mp.setDataSource(url); mp.prepare(); mp.start(); } catch (IllegalArgumentException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (SecurityException e) { // TODO Auto-generated catch block Log.e(TAG, "SecurityException"); } catch (IllegalStateException e) { // TODO Auto-generated catch block Log.e(TAG, "IllegalStateException"); } catch (IOException e) { // TODO Auto-generated catch block Log.e(TAG, "IOException"); } } @SuppressWarnings("deprecation") @Override public void onStart(Intent intent, int startId) { Log.d(TAG, "onStart"); mp.start(); // Set the isPlaying preference to true editor.putBoolean("isPlaying", true); editor.commit(); Context context = getApplicationContext(); String notifTitle = context.getResources().getString(R.string.app_name); String notifMessage = context.getResources().getString(R.string.now_playing); n.icon = R.drawable.ic_launcher; n.tickerText = notifMessage; n.flags = Notification.FLAG_NO_CLEAR; n.when = System.currentTimeMillis(); Intent nIntent = new Intent(context, MainActivity.class); PendingIntent pIntent = PendingIntent.getActivity(context, 0, nIntent, 0); n.setLatestEventInfo(context, notifTitle, notifMessage, pIntent); // Change 5315 to some nother number notificationManager.notify(notifId, n); AudioManager am = (AudioManager)getSystemService(Context.AUDIO_SERVICE); // Request audio focus for playback int result = am.requestAudioFocus(focusChangeListener, // Use the music stream. AudioManager.STREAM_MUSIC, // Request permanent focus. AudioManager.AUDIOFOCUS_GAIN); if (result == AudioManager.AUDIOFOCUS_REQUEST_GRANTED) { // other app had stopped playing song now , so u can do u stuff now . } } @Override public void onDestroy() { Log.d(TAG, "onDestroy"); mp.stop(); mp.release(); mp = null; editor.putBoolean("isPlaying", false); editor.commit(); notificationManager.cancel(notifId); AudioManager am = (AudioManager)getSystemService(Context.AUDIO_SERVICE); am.abandonAudioFocus(focusChangeListener); } }

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• Passing an object as parameter from Andriod to web service using ksoap

  - by user3718626

  I have an object called User which implements KvmSerializable. Would like to pass this object to the webservice. PropertyInfo pi = new PropertyInfo(); pi.setName("obj"); pi.setValue(user); pi.setType(user.getClass()); request.addProperty(pi); SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11); envelope.setOutputSoapObject(request); envelope.addMapping(NAMESPACE, "User",User.class); HttpTransportSE androidHttpTransport = new HttpTransportSE(URL); I get the following error.... SoapFault - faultcode: 'soapenv:Server' faultstring: 'Unknow type {http://users.com}User' faultactor: 'null' detail: org.kxml2.kdom.Node@53263024 at org.ksoap2.serialization.SoapSerializationEnvelope.parseBody(SoapSerializationEnvelope.java:141) at org.ksoap2.SoapEnvelope.parse(SoapEnvelope.java:140) at org.ksoap2.transport.Transport.parseResponse(Transport.java:118) at org.ksoap2.transport.HttpTransportSE.call(HttpTransportSE.java:272) at org.ksoap2.transport.HttpTransportSE.call(HttpTransportSE.java:118) at org.ksoap2.transport.HttpTransportSE.call(HttpTransportSE.java:113) at com.compete.WebServiceCallTask.getQuestion(WebServiceCallTask.java:114) at com.compete.WebServiceCallTask.doInBackground(WebServiceCallTask.java:53) at com.compete.WebServiceCallTask.doInBackground(WebServiceCallTask.java:1) at android.os.AsyncTask$2.call(AsyncTask.java:287) at java.util.concurrent.FutureTask.run(FutureTask.java:234) at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573) at java.lang.Thread.run(Thread.java:856) Appreciate if any one can point me to an sample code or can direct me what is the issue. Thanks.

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• Custom theme and sherlockActionBar

  - by Atomico

  I am doing a personal theme to use holo widget in 2.3 android. I did this: <resources xmlns:android="http://schemas.android.com/apk/res/android"> <style name="AppThemes" parent="@style/Theme.Sherlock"> <item name="android:editTextStyle">@style/EditTextAppTheme</item> <item name="android:checkboxStyle">@style/CheckBoxAppTheme</item> <item name="android:radioButtonStyle">@style/RadioButtonAppTheme</item> <item name="android:buttonStyle">@style/ButtonAppTheme</item> <item name="android:imageButtonStyle">@style/ImageButtonAppTheme</item> <item name="android:spinnerStyle">@style/SpinnerAppTheme</item> <item name="android:dropDownSpinnerStyle">@style/SpinnerAppTheme.DropDown</item> <item name="android:spinnerDropDownItemStyle">@style/SpinnerDropDownItemAppTheme</item> </style> </resources> the problem is that widgets don't take the correct style but take the default style. I tried to force assign the @style/EditTextAppTheme at an edittext and it worked.. so the problem is that the theme don't apply. any idea? update: the theme apply and work good..the solo problem is some edittext inside a dialog that show with the standard theme

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• hint and textview with right gravity and a singleline

  - by codeScriber

  I've opened a bug but i was wondering if anyone encountered this issue and knows a workaround. If you define a text view with a hint inside it, give it right gravity (android:gravity="right") then if you define android:singleLine=true or android:maxLines="1" or android:scrollHorizonatally="true" you don't see the hint. removing the right gravity returns the hint to the left side, removing all the tree params i mentioned above puts the hint on the right side. i want my hint on the right, but i need a single horizontal line... here's the sample layout that doesn't show the hint: <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="wrap_content" android:padding="5dp"> <EditText android:layout_width="fill_parent" android:layout_gravity="center_vertical|right" android:layout_height="wrap_content" android:layout_margin="6dp" android:textSize="16sp" android:paddingRight="5dp" android:id="@+id/c" android:gravity="right" android:hint="hello!!!" android:scrollHorizontally="true" android:maxLines="1" android:singleLine="true"/> </LinearLayout> i checked on 1.6 and 2.1 emulators and it reproduces 100%, i'm prettysure it's a bug, i don't see the connection between single line and the hint.... what's more the hint got it's own layout in the TextView (mLayout and mHintLayout both exists, in onDraw if the text length is 0 mHintLayout if mHint is not null is used).

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• emulator browser not connecting to internet

  - by vnshetty

  my emulator browser not connecting to internet? how to do the settings? <application android:icon="@drawable/icon" android:label="@string/app_name"> <activity android:name=".reader" android:label="@string/app_name"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> <category android:name="android.intent.category.BROWSABLE" /> </intent-filter> <intent-filter> <action android:name="android.intent.action.VIEW" /> <category android:name="android.intent.category.DEFAULT" /> </intent-filter> </activity> </application> <uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> <supports-screens android:smallScreens="true" android:normalScreens="true" android:largeScreens="true" android:anyDensity="true" /> </manifest>

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• Google MapView doesn't work after signed the app.

  - by user164589

  Hi guys, I am facing to android application signing problem. My application contains Google MapView. When I compile the app and run on the emulator, MapView works fine. But signed the app, MapView doesn't work. I've get Google Map API. This works on the simulator. I could sign the app once 2 months ago. Then I've upgraded the app. Now I need to sign the app again. Actually I don't know why signed app's mapView doesn't work. How to fix it ? Please advice. I used following steps when sign the app: Run Eclipse. Select the project. Right Click - Android Tools - Export Signed Application Package - Then Filled forms. (In forms, Validity years: 200, and all passwords are same.) Can you suggest me ? Thanks in advance.

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• What i am doing wrong with Class Overview?

  - by RFM software

  This code not work. Anyone can helpme? .java package rfmsoftware.util.test1; import android.app.Activity; import android.os.Bundle; public class test1 extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); Button button = (Button)findViewById(R.id.Button01); <---- Error at this line !? } } .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="@string/hello" /> <EditText android:id="@+id/EditText01" android:layout_width="wrap_content" android:layout_height="wrap_content" android:ems="10"></EditText> <Button android:id="@+id/Button01" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/Scan"></Button> <View android:id="@+id/View01" android:layout_width="wrap_content" android:layout_height="wrap_content"></View> </LinearLayout> .error Button cannot be resolved to a type (type Java problem) ???

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• How do I place widgets above and below a listview?

  - by Jay Askren

  I have a list view and want to put stuff both above(on the y axis) and below(y axis) it including images, text views, and a row of buttons. Below is a simplified version of what I am creating. Unfortunately the list covers(i.e. above on the z axis) the header so the header text is not visible instead of being underneath (on the y axis) <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="wrap_content" android:layout_height="wrap_content"> <TextView android:id="@+id/footer" android:text="footer" android:layout_height="wrap_content" android:layout_width="fill_parent" android:layout_alignParentBottom="true" /> <ListView android:id="@+id/list_view" android:layout_height="fill_parent" android:layout_width="fill_parent" android:layout_above="@id/footer" android:background="#ff9999ff"/> <TextView android:id="@+id/header" android:text="header" android:layout_height="wrap_content" android:layout_width="fill_parent" android:layout_alignParentTop="true" android:layout_above="@id/list_view" android:baselineAlignBottom="false" /> </RelativeLayout> Here is the corresponding Activity class: public class SampleListActivity extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.list_activity); } }

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• emo-framework in android move on collision of sprites with physics

  - by KaHeL

  I'm developing my first ever game for Android where I'm still learning about using of framework. To begin I made two sprites of ball where one ball is movable by dragging and another one is just standing on it's place on load. Now I've already added the collision listener for both sprites and as tested it's working properly. Now what I need to learn is on how can I add physics on both sprites where when they collide the standing sprite will move based on the physics and bounce around the screen. It would be best if you teach it to me step by step since I'm a little slow on this. Here's my nut so far: local stage = emo.Stage(); class Okay_1 { sprite = null; spriteok = null; dragStart = false; angle = 0; // Called when the stage is loaded function onLoad() { print("Level_1 is loaded!"); // Create new sprite and load 'f1.png' sprite = emo.Sprite("f1.png"); sprite.moveCenter(stage.getWindowWidth() * 0.5, stage.getWindowHeight() * 0.5); sprite.load(); spriteok = emo.Sprite("okay.png") spriteok.setWidth(100); spriteok.setHeight(100); spriteok.load(); // Check if the coordinate (X=100, Y=100) is inside the sprite if (spriteok.contains(100, 100)) { print("contains!"); } // Does the sprite collides with the other sprite? if (spriteok.collidesWith(sprite)) { print("collides!"); } } function onMotionEvent(ev) { if (ev.getAction() == MOTION_EVENT_ACTION_DOWN) { // Moves the sprite at the position of motion event angle = sprite.getAngle(); sprite.remove(); sprite = emo.Sprite("f2.png"); sprite.load(); sprite.rotate(angle); sprite.moveCenter(ev.getX(), ev.getY()); sprite.rotate(sprite.getAngle()+10); // Check if the coordinate (X=100, Y=100) is inside the sprite if (sprite.contains(sprite.getWidth(), sprite.getHeight())) { print("contains!"); } // Does the sprite collides with the other sprite? if (sprite.collidesWith(spriteok)) { print("collides!"); } dragStart = true; }else if (ev.getAction() == MOTION_EVENT_ACTION_MOVE) { if (dragStart) { // Moves the sprite at the position of motion event sprite.moveCenter(ev.getX(), ev.getY()); sprite.rotate(sprite.getAngle()+10); // Check if the coordinate (X=100, Y=100) is inside the sprite if (sprite.contains(sprite.getWidth(), sprite.getHeight())) { print("contains!"); } // Does the sprite collides with the other sprite? if (sprite.collidesWith(spriteok)) { print("collides!"); } } }else if (ev.getAction() == MOTION_EVENT_ACTION_UP || ev.getAction() == MOTION_EVENT_ACTION_CANCEL) { if (dragStart) { // change block color to red dragStart = false; angle = sprite.getAngle(); sprite.remove(); sprite = emo.Sprite("f1.png"); sprite.load(); sprite.moveCenter(ev.getX(), ev.getY()); sprite.rotate(angle); // Check if the coordinate (X=100, Y=100) is inside the sprite if (sprite.contains(sprite.getWidth(), sprite.getHeight())) { print("contains!"); } // Does the sprite collides with the other sprite? if (sprite.collidesWith(spriteok)) { print("collides!"); } } } } // Called when the stage is disposed function onDispose() { sprite.remove(); // Remove the sprite print("Level_1 is disposed!"); } } function emo::onLoad() { emo.Stage().load(Okay_1()); }

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• Texture displays on Android emulator but not on device

  - by Rob

  I have written a simple UI which takes an image (256x256) and maps it to a rectangle. This works perfectly on the emulator however on the phone the texture does not show, I see only a white rectangle. This is my code: public void onSurfaceCreated(GL10 gl, EGLConfig config) { byteBuffer = ByteBuffer.allocateDirect(shape.length * 4); byteBuffer.order(ByteOrder.nativeOrder()); vertexBuffer = byteBuffer.asFloatBuffer(); vertexBuffer.put(cardshape); vertexBuffer.position(0); byteBuffer = ByteBuffer.allocateDirect(shape.length * 4); byteBuffer.order(ByteOrder.nativeOrder()); textureBuffer = byteBuffer.asFloatBuffer(); textureBuffer.put(textureshape); textureBuffer.position(0); // Set the background color to black ( rgba ). gl.glClearColor(0.0f, 0.0f, 0.0f, 0.5f); // Enable Smooth Shading, default not really needed. gl.glShadeModel(GL10.GL_SMOOTH); // Depth buffer setup. gl.glClearDepthf(1.0f); // Enables depth testing. gl.glEnable(GL10.GL_DEPTH_TEST); // The type of depth testing to do. gl.glDepthFunc(GL10.GL_LEQUAL); // Really nice perspective calculations. gl.glHint(GL10.GL_PERSPECTIVE_CORRECTION_HINT, GL10.GL_NICEST); gl.glEnable(GL10.GL_TEXTURE_2D); loadGLTexture(gl); } public void onDrawFrame(GL10 gl) { gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT); gl.glDisable(GL10.GL_DEPTH_TEST); gl.glMatrixMode(GL10.GL_PROJECTION); // Select Projection gl.glPushMatrix(); // Push The Matrix gl.glLoadIdentity(); // Reset The Matrix gl.glOrthof(0f, 480f, 0f, 800f, -1f, 1f); gl.glMatrixMode(GL10.GL_MODELVIEW); // Select Modelview Matrix gl.glPushMatrix(); // Push The Matrix gl.glLoadIdentity(); // Reset The Matrix gl.glEnableClientState(GL10.GL_VERTEX_ARRAY); gl.glEnableClientState(GL10.GL_TEXTURE_COORD_ARRAY); gl.glLoadIdentity(); gl.glTranslatef(card.x, card.y, 0.0f); gl.glBindTexture(GL10.GL_TEXTURE_2D, texture[0]); //activates texture to be used now gl.glVertexPointer(2, GL10.GL_FLOAT, 0, vertexBuffer); gl.glTexCoordPointer(2, GL10.GL_FLOAT, 0, textureBuffer); gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 0, 4); gl.glDisableClientState(GL10.GL_VERTEX_ARRAY); gl.glDisableClientState(GL10.GL_TEXTURE_COORD_ARRAY); } public void onSurfaceChanged(GL10 gl, int width, int height) { // Sets the current view port to the new size. gl.glViewport(0, 0, width, height); // Select the projection matrix gl.glMatrixMode(GL10.GL_PROJECTION); // Reset the projection matrix gl.glLoadIdentity(); // Calculate the aspect ratio of the window GLU.gluPerspective(gl, 45.0f, (float) width / (float) height, 0.1f, 100.0f); // Select the modelview matrix gl.glMatrixMode(GL10.GL_MODELVIEW); // Reset the modelview matrix gl.glLoadIdentity(); } public int[] texture = new int[1]; public void loadGLTexture(GL10 gl) { // loading texture Bitmap bitmap; bitmap = BitmapFactory.decodeResource(context.getResources(), R.drawable.image); // generate one texture pointer gl.glGenTextures(0, texture, 0); //adds texture id to texture array // ...and bind it to our array gl.glBindTexture(GL10.GL_TEXTURE_2D, texture[0]); //activates texture to be used now // create nearest filtered texture gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MIN_FILTER, GL10.GL_NEAREST); gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MAG_FILTER, GL10.GL_LINEAR); // Use Android GLUtils to specify a two-dimensional texture image from our bitmap GLUtils.texImage2D(GL10.GL_TEXTURE_2D, 0, bitmap, 0); // Clean up bitmap.recycle(); } As per many other similar issues and resolutions on the web i have tried setting the minsdkversion is 3, loading the bitmap via an input stream bitmap = BitmapFactory.decodeStream(is), setting BitmapFactory.Options.inScaled to false, putting the images in the nodpi folder and putting them in the raw folder.. all of which didn't help. I'm not really sure what else to try..

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