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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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  • android camera preview blank screen

    - by user1104836
    I want to capture a photo manually not by using existing camera apps. So i made this Activity: public class CameraActivity extends Activity { private Camera mCamera; private Preview mPreview; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_camera); // Create an instance of Camera // mCamera = Camera.open(0); // Create our Preview view and set it as the content of our activity. mPreview = new Preview(this); mPreview.safeCameraOpen(0); FrameLayout preview = (FrameLayout) findViewById(R.id.camera_preview); preview.addView(mPreview); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.activity_camera, menu); return true; } } This is the CameraPreview which i want to use: public class Preview extends ViewGroup implements SurfaceHolder.Callback { SurfaceView mSurfaceView; SurfaceHolder mHolder; //CAM INSTANCE ================================ private Camera mCamera; List<Size> mSupportedPreviewSizes; //============================================= /** * @param context */ public Preview(Context context) { super(context); mSurfaceView = new SurfaceView(context); addView(mSurfaceView); // Install a SurfaceHolder.Callback so we get notified when the // underlying surface is created and destroyed. mHolder = mSurfaceView.getHolder(); mHolder.addCallback(this); mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); } /** * @param context * @param attrs */ public Preview(Context context, AttributeSet attrs) { super(context, attrs); // TODO Auto-generated constructor stub } /** * @param context * @param attrs * @param defStyle */ public Preview(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); // TODO Auto-generated constructor stub } /* (non-Javadoc) * @see android.view.ViewGroup#onLayout(boolean, int, int, int, int) */ @Override protected void onLayout(boolean arg0, int arg1, int arg2, int arg3, int arg4) { // TODO Auto-generated method stub } @Override public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { // Now that the size is known, set up the camera parameters and begin // the preview. Camera.Parameters parameters = mCamera.getParameters(); parameters.setPreviewSize(width, height); requestLayout(); mCamera.setParameters(parameters); /* Important: Call startPreview() to start updating the preview surface. Preview must be started before you can take a picture. */ mCamera.startPreview(); } @Override public void surfaceCreated(SurfaceHolder holder) { // TODO Auto-generated method stub } @Override public void surfaceDestroyed(SurfaceHolder holder) { // Surface will be destroyed when we return, so stop the preview. if (mCamera != null) { /* Call stopPreview() to stop updating the preview surface. */ mCamera.stopPreview(); } } /** * When this function returns, mCamera will be null. */ private void stopPreviewAndFreeCamera() { if (mCamera != null) { /* Call stopPreview() to stop updating the preview surface. */ mCamera.stopPreview(); /* Important: Call release() to release the camera for use by other applications. Applications should release the camera immediately in onPause() (and re-open() it in onResume()). */ mCamera.release(); mCamera = null; } } public void setCamera(Camera camera) { if (mCamera == camera) { return; } stopPreviewAndFreeCamera(); mCamera = camera; if (mCamera != null) { List<Size> localSizes = mCamera.getParameters().getSupportedPreviewSizes(); mSupportedPreviewSizes = localSizes; requestLayout(); try { mCamera.setPreviewDisplay(mHolder); } catch (IOException e) { e.printStackTrace(); } /* Important: Call startPreview() to start updating the preview surface. Preview must be started before you can take a picture. */ mCamera.startPreview(); } } public boolean safeCameraOpen(int id) { boolean qOpened = false; try { releaseCameraAndPreview(); mCamera = Camera.open(id); mCamera.startPreview(); qOpened = (mCamera != null); } catch (Exception e) { // Log.e(R.string.app_name, "failed to open Camera"); e.printStackTrace(); } return qOpened; } Camera.PictureCallback mPicCallback = new Camera.PictureCallback() { @Override public void onPictureTaken(byte[] data, Camera camera) { // TODO Auto-generated method stub Log.d("lala", "pic is taken"); } }; public void takePic() { mCamera.startPreview(); // mCamera.takePicture(null, mPicCallback, mPicCallback); } private void releaseCameraAndPreview() { this.setCamera(null); if (mCamera != null) { mCamera.release(); mCamera = null; } } } This is the Layout of CameraActivity: <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".CameraActivity" > <FrameLayout android:id="@+id/camera_preview" android:layout_width="0dip" android:layout_height="fill_parent" android:layout_weight="1" /> <Button android:id="@+id/button_capture" android:text="Capture" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" /> </LinearLayout> But when i start the CameraActivity, i just see a blank white background and the Capture-Button??? Why i dont see the Camera-Screen?

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  • Error when call 'qb.query(db, projection, selection, selectionArgs, null, null, orderBy);'

    - by smalltalk1960s
    Hi all, I make a content provider named 'DictionaryProvider' (Based on NotepadProvider). When my program run to command 'qb.query(db, projection, selection, selectionArgs, null, null, orderBy);', error happen. I don't know how to fix. please help me. Below is my code // file main calling DictionnaryProvider @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.dictionary); final String[] PROJECTION = new String[] { DicColumns._ID, // 0 DicColumns.KEY_WORD, // 1 DicColumns.KEY_DEFINITION // 2 }; Cursor c = managedQuery(DicColumns.CONTENT_URI, PROJECTION, null, null, DicColumns.DEFAULT_SORT_ORDER); String str = ""; if (c.moveToFirst()) { int wordColumn = c.getColumnIndex("KEY_WORD"); int defColumn = c.getColumnIndex("KEY_DEFINITION"); do { // Get the field values str = ""; str += c.getString(wordColumn); str +="\n"; str +=c.getString(defColumn); } while (c.moveToNext()); } Toast.makeText(this, str, Toast.LENGTH_SHORT).show(); } // file DictionaryProvider.java package com.example.helloandroid; import java.util.HashMap; import android.content.ContentProvider; import android.content.ContentValues; import android.content.UriMatcher; import android.database.Cursor; import android.database.sqlite.SQLiteDatabase; import android.database.sqlite.SQLiteQueryBuilder; import android.net.Uri; import android.text.TextUtils; import com.example.helloandroid.Dictionary.DicColumns; public class DictionaryProvider extends ContentProvider { //private static final String TAG = "DictionaryProvider"; private DictionaryOpenHelper dbdic; static final int DATABASE_VERSION = 1; static final String DICTIONARY_DATABASE_NAME = "dictionarydb"; static final String DICTIONARY_TABLE_NAME = "dictionary"; private static final UriMatcher sUriMatcher; private static HashMap<String, String> sDicProjectionMap; @Override public int delete(Uri arg0, String arg1, String[] arg2) { // TODO Auto-generated method stub return 0; } @Override public String getType(Uri arg0) { // TODO Auto-generated method stub return null; } @Override public Uri insert(Uri arg0, ContentValues arg1) { // TODO Auto-generated method stub return null; } @Override public boolean onCreate() { // TODO Auto-generated method stub dbdic = new DictionaryOpenHelper(getContext(), DICTIONARY_DATABASE_NAME, null, DATABASE_VERSION); return true; } @Override public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder) { SQLiteQueryBuilder qb = new SQLiteQueryBuilder(); qb.setTables(DICTIONARY_TABLE_NAME); switch (sUriMatcher.match(uri)) { case 1: qb.setProjectionMap(sDicProjectionMap); break; case 2: qb.setProjectionMap(sDicProjectionMap); qb.appendWhere(DicColumns._ID + "=" + uri.getPathSegments().get(1)); break; default: throw new IllegalArgumentException("Unknown URI " + uri); } // If no sort order is specified use the default String orderBy; if (TextUtils.isEmpty(sortOrder)) { orderBy = DicColumns.DEFAULT_SORT_ORDER; } else { orderBy = sortOrder; } // Get the database and run the query SQLiteDatabase db = dbdic.getReadableDatabase(); Cursor c = qb.query(db, projection, selection, selectionArgs, null, null, orderBy); // Tell the cursor what uri to watch, so it knows when its source data changes c.setNotificationUri(getContext().getContentResolver(), uri); return c; } @Override public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) { // TODO Auto-generated method stub return 0; } static { sUriMatcher = new UriMatcher(UriMatcher.NO_MATCH); sUriMatcher.addURI(Dictionary.AUTHORITY, "dictionary", 1); sUriMatcher.addURI(Dictionary.AUTHORITY, "dictionary/#", 2); sDicProjectionMap = new HashMap<String, String>(); sDicProjectionMap.put(DicColumns._ID, DicColumns._ID); sDicProjectionMap.put(DicColumns.KEY_WORD, DicColumns.KEY_WORD); sDicProjectionMap.put(DicColumns.KEY_DEFINITION, DicColumns.KEY_DEFINITION); // Support for Live Folders. /*sLiveFolderProjectionMap = new HashMap<String, String>(); sLiveFolderProjectionMap.put(LiveFolders._ID, NoteColumns._ID + " AS " + LiveFolders._ID); sLiveFolderProjectionMap.put(LiveFolders.NAME, NoteColumns.TITLE + " AS " + LiveFolders.NAME);*/ // Add more columns here for more robust Live Folders. } } // file Dictionary.java package com.example.helloandroid; import android.net.Uri; import android.provider.BaseColumns; /** * Convenience definitions for DictionaryProvider */ public final class Dictionary { public static final String AUTHORITY = "com.example.helloandroid.provider.Dictionary"; // This class cannot be instantiated private Dictionary() {} /** * Dictionary table */ public static final class DicColumns implements BaseColumns { // This class cannot be instantiated private DicColumns() {} /** * The content:// style URL for this table */ public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/dictionary"); /** * The MIME type of {@link #CONTENT_URI} providing a directory of notes. */ //public static final String CONTENT_TYPE = "vnd.android.cursor.dir/vnd.google.note"; /** * The MIME type of a {@link #CONTENT_URI} sub-directory of a single note. */ //public static final String CONTENT_ITEM_TYPE = "vnd.android.cursor.item/vnd.google.note"; /** * The default sort order for this table */ public static final String DEFAULT_SORT_ORDER = "modified DESC"; /** * The key_word of the dictionary * <P>Type: TEXT</P> */ public static final String KEY_WORD = "KEY_WORD"; /** * The key_definition of word * <P>Type: TEXT</P> */ public static final String KEY_DEFINITION = "KEY_DEFINITION"; } } thanks so much

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  • Animation Trouble with Java Swing Timer - Also, JFrame Will Not Exit_On_Close

    - by forgotton_semicolon
    So, I am using a Java Swing Timer because putting the animation code in a run() method of a Thread subclass caused an insane amount of flickering that is really a terrible experience for any video game player. Can anyone give me any tips on: Why there is no animation... Why the JFrame will not close when it is coded to Exit_On_Close 2 times My code is here: import java.awt.; import java.awt.event.; import javax.swing.*; import java.net.URL; //////////////////////////////////////////////////////////////// TFQ public class TFQ extends JFrame { DrawingsInSpace dis; //========================================================== constructor public TFQ() { dis = new DrawingsInSpace(); JPanel content = new JPanel(); content.setLayout(new FlowLayout()); this.setContentPane(dis); this.setDefaultCloseOperation(EXIT_ON_CLOSE); this.setTitle("Plasma_Orbs_Off_Orion"); this.setSize(500,500); this.pack(); //... Create timer which calls action listener every second.. // Use full package qualification for javax.swing.Timer // to avoid potential conflicts with java.util.Timer. javax.swing.Timer t = new javax.swing.Timer(500, new TimePhaseListener()); t.start(); } /////////////////////////////////////////////// inner class Listener thing class TimePhaseListener implements ActionListener, KeyListener { // counter int total; // loop control boolean Its_a_go = true; //position of our matrix int tf = -400; //sprite directions int Sprite_Direction; final int RIGHT = 1; final int LEFT = 2; //for obstacle Rectangle mega_obstacle = new Rectangle(200, 0, 20, HEIGHT); public void actionPerformed(ActionEvent e) { //... Whenever this is called, repaint the screen dis.repaint(); addKeyListener(this); while (Its_a_go) { try { dis.repaint(); if(Sprite_Direction == RIGHT) { dis.matrix.x += 2; } // end if i think if(Sprite_Direction == LEFT) { dis.matrix.x -= 2; } } catch(Exception ex) { System.out.println(ex); } } // end while i think } // end actionPerformed @Override public void keyPressed(KeyEvent arg0) { // TODO Auto-generated method stub } @Override public void keyReleased(KeyEvent arg0) { // TODO Auto-generated method stub } @Override public void keyTyped(KeyEvent event) { // TODO Auto-generated method stub if (event.getKeyChar()=='f'){ Sprite_Direction = RIGHT; System.out.println("matrix should be animating now "); System.out.println("current matrix position = " + dis.matrix.x); } if (event.getKeyChar()=='d') { Sprite_Direction = LEFT; System.out.println("matrix should be going in reverse"); System.out.println("current matrix position = " + dis.matrix.x); } } } //================================================================= main public static void main(String[] args) { JFrame SafetyPins = new TFQ(); SafetyPins.setVisible(true); SafetyPins.setSize(500,500); SafetyPins.setResizable(true); SafetyPins.setLocationRelativeTo(null); SafetyPins.setDefaultCloseOperation(EXIT_ON_CLOSE); } } class DrawingsInSpace extends JPanel { URL url1_plasma_orbs; URL url2_matrix; Image img1_plasma_orbs; Image img2_matrix; // for the plasma_orbs Rectangle bbb = new Rectangle(0,0, 0, 0); // for the matrix Rectangle matrix = new Rectangle(-400, 60, 430, 200); public DrawingsInSpace() { //load URLs try { url1_plasma_orbs = this.getClass().getResource("plasma_orbs.png"); url2_matrix = this.getClass().getResource("matrix.png"); } catch(Exception e) { System.out.println(e); } // attach the URLs to the images img1_plasma_orbs = Toolkit.getDefaultToolkit().getImage(url1_plasma_orbs); img2_matrix = Toolkit.getDefaultToolkit().getImage(url2_matrix); } public void paintComponent(Graphics g) { super.paintComponent(g); // draw the plasma_orbs g.drawImage(img1_plasma_orbs, bbb.x, bbb.y,this); //draw the matrix g.drawImage(img2_matrix, matrix.x, matrix.y, this); } } // end class enter code here

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  • XNA WP7 Texture memory and ContentManager

    - by jlongstreet
    I'm trying to get my WP7 XNA game's memory under control and under the 90MB limit for submission. One target I identified was UI textures, especially fullscreen ones, that would never get unloaded. So I moved UI texture loads to their own ContentManager so I can unload them. However, this doesn't seem to affect the value of Microsoft.Phone.Info.DeviceExtendedProperties.GetValue("ApplicationCurrentMemoryUsage"), so it doesn't look like the memory is actually being released. Example: splash screens. In Game.LoadContent(): Application.Instance.SetContentManager("UI"); // set the current content manager for (int i = 0; i < mSplashTextures.Length; ++i) { // load the splash textures mSplashTextures[i] = Application.Instance.Content.Load<Texture2D>(msSplashTextureNames[i]); } // set the content manager back to the global one Application.Instance.SetContentManager("Global"); When the initial load is done and the title screen starts, I do: Application.Instance.GetContentManager("UI").Unload(); The three textures take about 6.5 MB of memory. Before unloading the UI ContentManager, I see that ApplicationCurrentMemoryUsage is at 34.29 MB. After unloading the ContentManager (and doing a full GC.Collect()), it's still at 34.29 MB. But after that, I load another fullscreen texture (for the title screen background) and memory usage still doesn't change. Could it be keeping the memory for these textures allocated and reusing it? edit: very simple test: protected override void LoadContent() { // Create a new SpriteBatch, which can be used to draw textures. spriteBatch = new SpriteBatch(GraphicsDevice); PrintMemUsage("Before texture load: "); // TODO: use this.Content to load your game content here red = this.Content.Load<Texture2D>("Untitled"); PrintMemUsage("After texture load: "); } private void PrintMemUsage(string tag) { Debug.WriteLine(tag + Microsoft.Phone.Info.DeviceExtendedProperties.GetValue("ApplicationCurrentMemoryUsage")); } protected override void Update(GameTime gameTime) { // Allows the game to exit if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed) this.Exit(); // TODO: Add your update logic here if (count++ == 100) { GC.Collect(); GC.WaitForPendingFinalizers(); PrintMemUsage("Before CM unload: "); this.Content.Dispose(); GC.Collect(); GC.WaitForPendingFinalizers(); PrintMemUsage("After CM unload: "); red = null; spriteBatch.Dispose(); GC.Collect(); GC.WaitForPendingFinalizers(); PrintMemUsage("After SpriteBatch Dispose(): "); } base.Update(gameTime); } protected override void Draw(GameTime gameTime) { GraphicsDevice.Clear(Color.CornflowerBlue); // TODO: Add your drawing code here if (red != null) { spriteBatch.Begin(); spriteBatch.Draw(red, new Vector2(0,0), Color.White); spriteBatch.End(); } base.Draw(gameTime); } This prints something like (it changes every time): Before texture load: 7532544 After texture load: 10727424 Before CM unload: 9875456 After CM unload: 9953280 After SpriteBatch Dispose(): 9953280

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  • maven and lift using scala 2.8 : lift-mapper missing?

    - by Bjorn J
    Newbie question since I'm not up to speed using maven at all. I'm trying to use scala + lift using scala 2.8, environment is a win7 box if that matters. I create a basic project using: mvn archetype:generate -U -DarchetypeGroupId=net.liftweb -DarchetypeArtifactId=lift-archetype-basic -DarchetypeVersion=2.0-scala280-SNAPSHOT -DarchetypeRepository=http://scala-tools.org/repo-snapshots -DremoteRepositories=http://scala-tools.org/repo-snapshots -DgroupId=com.liftworkshop -DartifactId=todo -Dversion=1.0-SNAPSHOT So far so good, but then, I try to cd into my new project and do: mvn jetty:run I after quite a few downloads end up with a error like below: [ERROR] BUILD ERROR [INFO] ------------------------------------------------------------------------ [INFO] Failed to resolve artifact. Missing: ---------- 1) net.liftweb:lift-mapper:jar:2.0-scala280-SNAPSHOT Try downloading the file manually from the project website. Then, install it using the command: mvn install:install-file -DgroupId=net.liftweb -DartifactId=lift-mapper -D version=2.0-scala280-SNAPSHOT -Dpackaging=jar -Dfile=/path/to/file Alternatively, if you host your own repository you can deploy the file there: mvn deploy:deploy-file -DgroupId=net.liftweb -DartifactId=lift-mapper -Dve rsion=2.0-scala280-SNAPSHOT -Dpackaging=jar -Dfile=/path/to/file -Durl=[url] -Dr epositoryId=[id] Path to dependency: 1) com.liftworkshop:todo:war:1.0-SNAPSHOT 2) net.liftweb:lift-mapper:jar:2.0-scala280-SNAPSHOT ---------- 1 required artifact is missing. for artifact: com.liftworkshop:todo:war:1.0-SNAPSHOT from the specified remote repositories: scala-tools.snapshots (http://scala-tools.org/repo-snapshots), scala-tools.releases (http://scala-tools.org/repo-releases), central (http://repo1.maven.org/maven2) Any ideas?

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  • Crash: iPhone Threading with Blocks

    - by jtbandes
    I have some convenience methods set up for threading with blocks (using PLBlocks). Then in the main portion of my code, I call the method -fetchArrivalsForLocationIDs:callback:errback:, which runs some web API calls in the background. Here's the problem: when I comment out the 2 NSAutoreleasePool-related lines in JTBlockThreading.m, of course I get lots of Object 0x6b31280 of class __NSArrayM autoreleased with no pool in place - just leaking errors. However, if I uncomment them, the app frequently crashes on the [pool release]; line, sometimes saying malloc: *** error for object 0x6e3ae10: pointer being freed was not allocated" *** set a breakpoint in malloc_error_break to debug. I assume I've made a horrible mistake/assumption in threading somewhere, but can anyone figure out what exactly the problem is? // JTBlockThreading.h #import <Foundation/Foundation.h> #import <PLBlocks/Block.h> #define JT_BLOCKTHREAD_BACKGROUND [self invokeBlockInBackground:^{ #define JT_BLOCKTHREAD_MAIN [self invokeBlockOnMainThread:^{ #define JT_BLOCKTHREAD_END }]; #define JT_BLOCKTHREAD_BACKGROUND_END_WAIT } waitUntilDone:YES]; @interface NSObject (JTBlockThreading) - (void)invokeBlockInBackground:(void (^)())block; - (void)invokeBlockOnMainThread:(void (^)())block; - (void)invokeBlockOnMainThread:(void (^)())block waitUntilDone:(BOOL)wait; - (void)invokeBlock:(void (^)())block; @end // JTBlockThreading.m #import "JTBlockThreading.h" @implementation NSObject (JTBlockThreading) - (void)invokeBlockInBackground:(void (^)())block { [self performSelectorInBackground:@selector(invokeBlock:) withObject:[block copy]]; } - (void)invokeBlockOnMainThread:(void (^)())block { [self invokeBlockOnMainThread:block waitUntilDone:NO]; } - (void)invokeBlockOnMainThread:(void (^)())block waitUntilDone:(BOOL)wait { [self performSelectorOnMainThread:@selector(invokeBlock:) withObject:[block copy] waitUntilDone:wait]; } - (void)invokeBlock:(void (^)())block { //NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; block(); [block release]; //[pool release]; } @end - (void)fetchArrivalsForLocationIDs:(NSString *)locIDs callback:(JTWSCallback)callback errback:(JTWSErrback)errback { JT_PUSH_NETWORK(); JT_BLOCKTHREAD_BACKGROUND NSError *error = nil; // Create API call URL NSURL *url = [NSURL URLWithString: [NSString stringWithFormat:@"%@/arrivals/appID/%@/locIDs/%@", TRIMET_BASE_URL, appID, locIDs]]; if (!url) { JT_BLOCKTHREAD_MAIN errback(@"That’s not a valid Stop ID!"); JT_POP_NETWORK(); JT_BLOCKTHREAD_END return; } // Call API NSData *data = [NSData dataWithContentsOfURL:url options:0 error:&error]; if (!data) { JT_BLOCKTHREAD_MAIN errback([NSString stringWithFormat: @"Had trouble downloading the arrival data! %@", [error localizedDescription]]); JT_POP_NETWORK(); JT_BLOCKTHREAD_END return; } CXMLDocument *doc = [[CXMLDocument alloc] initWithData:data options:0 error:&error]; if (!doc) { JT_BLOCKTHREAD_MAIN // TODO: further error description // (TouchXML doesn't provide information with the error) errback(@"Had trouble reading the arrival data!"); JT_POP_NETWORK(); JT_BLOCKTHREAD_END return; } NSArray *nodes = nil; CXMLElement *resultSet = [doc rootElement]; // Begin building the response model JTWSResponseArrivalData *response = [[[JTWSResponseArrivalData alloc] init] autorelease]; response.queryTime = [NSDate JT_dateWithTriMetWSTimestamp: [[resultSet attributeValueForName:@"queryTime"] longLongValue]]; if (!response.queryTime) { // TODO: further error check? NSLog(@"Hm, query time is nil in %s... response %@, resultSet %@", __PRETTY_FUNCTION__, response, resultSet); } nodes = [resultSet nodesForXPath:@"//arrivals:errorMessage" namespaceMappings:namespaceMappings error:&error]; if ([nodes count] > 0) { NSString *message = [[nodes objectAtIndex:0] stringValue]; response.errorMessage = message; // TODO: this probably won't be used... JT_BLOCKTHREAD_MAIN errback([NSString stringWithFormat: @"TriMet error: “%@”", message]); JT_POP_NETWORK(); JT_BLOCKTHREAD_END return; } // Build location models nodes = [resultSet nodesForXPath:@"/arrivals:location" namespaceMappings:namespaceMappings error:&error]; if ([nodes count] <= 0) { NSLog(@"Hm, no locations returned in %s... xpath error %@, response %@, resultSet %@", __PRETTY_FUNCTION__, error, response, resultSet); } NSMutableArray *locations = [NSMutableArray arrayWithCapacity:[nodes count]]; for (CXMLElement *loc in nodes) { JTWSLocation *location = [[[JTWSLocation alloc] init] autorelease]; location.desc = [loc attributeValueForName:@"desc"]; location.dir = [loc attributeValueForName:@"dir"]; location.position = [[[CLLocation alloc] initWithLatitude:[[loc attributeValueForName:@"lat"] doubleValue] longitude:[[loc attributeValueForName:@"lng"] doubleValue]] autorelease]; location.locID = [[loc attributeValueForName:@"locid"] integerValue]; } // Build arrival models nodes = [resultSet nodesForXPath:@"/arrivals:arrival" namespaceMappings:namespaceMappings error:&error]; if ([nodes count] <= 0) { NSLog(@"Hm, no arrivals returned in %s... xpath error %@, response %@, resultSet %@", __PRETTY_FUNCTION__, error, response, resultSet); } NSMutableArray *arrivals = [[NSMutableArray alloc] initWithCapacity:[nodes count]]; for (CXMLElement *arv in nodes) { JTWSArrival *arrival = [[JTWSArrival alloc] init]; arrival.block = [[arv attributeValueForName:@"block"] integerValue]; arrival.piece = [[arv attributeValueForName:@"piece"] integerValue]; arrival.locID = [[arv attributeValueForName:@"locid"] integerValue]; arrival.departed = [[arv attributeValueForName:@"departed"] boolValue]; // TODO: verify arrival.detour = [[arv attributeValueForName:@"detour"] boolValue]; // TODO: verify arrival.direction = (JTWSRouteDirection)[[arv attributeValueForName:@"dir"] integerValue]; arrival.estimated = [NSDate JT_dateWithTriMetWSTimestamp: [[arv attributeValueForName:@"estimated"] longLongValue]]; arrival.scheduled = [NSDate JT_dateWithTriMetWSTimestamp: [[arv attributeValueForName:@"scheduled"] longLongValue]]; arrival.fullSign = [arv attributeValueForName:@"fullSign"]; arrival.shortSign = [arv attributeValueForName:@"shortSign"]; NSString *status = [arv attributeValueForName:@"status"]; if ([status isEqualToString:@"estimated"]) { arrival.status = JTWSArrivalStatusEstimated; } else if ([status isEqualToString:@"scheduled"]) { arrival.status = JTWSArrivalStatusScheduled; } else if ([status isEqualToString:@"delayed"]) { arrival.status = JTWSArrivalStatusDelayed; } else if ([status isEqualToString:@"canceled"]) { arrival.status = JTWSArrivalStatusCanceled; } else { NSLog(@"Unknown arrival status %s in %@... response %@, arrival %@", status, __PRETTY_FUNCTION__, response, arv); } NSArray *blockPositions = [arv nodesForXPath:@"/arrivals:blockPosition" namespaceMappings:namespaceMappings error:&error]; if ([blockPositions count] > 1) { // The schema allows for any number of blockPosition elements, // but I'm really not sure why... NSLog(@"Hm, more than one blockPosition in %s... response %@, arrival %@", __PRETTY_FUNCTION__, response, arv); } if ([blockPositions count] > 0) { CXMLElement *bpos = [blockPositions objectAtIndex:0]; JTWSBlockPosition *blockPosition = [[JTWSBlockPosition alloc] init]; blockPosition.reported = [NSDate JT_dateWithTriMetWSTimestamp: [[bpos attributeValueForName:@"at"] longLongValue]]; blockPosition.feet = [[bpos attributeValueForName:@"feet"] integerValue]; blockPosition.position = [[[CLLocation alloc] initWithLatitude:[[bpos attributeValueForName:@"lat"] doubleValue] longitude:[[bpos attributeValueForName:@"lng"] doubleValue]] autorelease]; NSString *headingStr = [bpos attributeValueForName:@"heading"]; if (headingStr) { // Valid CLLocationDirections are > 0 CLLocationDirection heading = [headingStr integerValue]; while (heading < 0) heading += 360.0; blockPosition.heading = heading; } else { blockPosition.heading = -1; // indicates invalid heading } NSArray *tripData = [bpos nodesForXPath:@"/arrivals:trip" namespaceMappings:namespaceMappings error:&error]; NSMutableArray *trips = [[NSMutableArray alloc] initWithCapacity:[tripData count]]; for (CXMLElement *tripDatum in tripData) { JTWSTrip *trip = [[JTWSTrip alloc] init]; trip.desc = [tripDatum attributeValueForName:@"desc"]; trip.destDist = [[tripDatum attributeValueForName:@"destDist"] integerValue]; trip.direction = (JTWSRouteDirection)[[tripDatum attributeValueForName:@"dir"] integerValue]; trip.pattern = [[tripDatum attributeValueForName:@"pattern"] integerValue]; trip.progress = [[tripDatum attributeValueForName:@"progress"] integerValue]; trip.route = [[tripDatum attributeValueForName:@"route"] integerValue]; [trips addObject:trip]; [trip release]; } blockPosition.trips = trips; [trips release]; NSArray *layoverData = [bpos nodesForXPath:@"/arrivals:layover" namespaceMappings:namespaceMappings error:&error]; NSMutableArray *layovers = [[NSMutableArray alloc] initWithCapacity:[layoverData count]]; for (CXMLElement *layoverDatum in layoverData) { JTWSLayover *layover = [[JTWSLayover alloc] init]; layover.start = [NSDate JT_dateWithTriMetWSTimestamp: [[layoverDatum attributeValueForName:@"start"] longLongValue]]; layover.end = [NSDate JT_dateWithTriMetWSTimestamp: [[layoverDatum attributeValueForName:@"end"] longLongValue]]; // TODO: it seems the API can send a <location> inside a layover (undocumented)... support? [layovers addObject:layover]; [layover release]; } blockPosition.layovers = layovers; [layovers release]; arrival.blockPosition = blockPosition; [blockPosition release]; } [arrivals addObject:arrival]; [arrival release]; } // Add arrivals to corresponding locations for (JTWSLocation *loc in locations) { loc.arrivals = [arrivals selectWithBlock:^BOOL (id arv) { return loc.locID == ((JTWSArrival *)arv).locID; }]; } [arrivals release]; response.locations = locations; [locations release]; // Build route status models (used in inclement weather) nodes = [resultSet nodesForXPath:@"/arrivals:routeStatus" namespaceMappings:namespaceMappings error:&error]; NSMutableArray *routeStatuses = [NSMutableArray arrayWithCapacity:[nodes count]]; for (CXMLElement *stat in nodes) { JTWSRouteStatus *status = [[JTWSRouteStatus alloc] init]; status.route = [[stat attributeValueForName:@"route"] integerValue]; NSString *statusStr = [stat attributeValueForName:@"status"]; if ([statusStr isEqualToString:@"estimatedOnly"]) { status.status = JTWSRouteStatusTypeEstimatedOnly; } else if ([statusStr isEqualToString:@"off"]) { status.status = JTWSRouteStatusTypeOff; } else { NSLog(@"Unknown route status type %s in %@... response %@, routeStatus %@", status, __PRETTY_FUNCTION__, response, stat); } [routeStatuses addObject:status]; [status release]; } response.routeStatuses = routeStatuses; [routeStatuses release]; JT_BLOCKTHREAD_MAIN callback(response); JT_POP_NETWORK(); JT_BLOCKTHREAD_END JT_BLOCKTHREAD_END }

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  • How do I know if I have an unmanaged resource?

    - by Shiftbit
    I've read that unmanaged resource are considered file handles, streams, anything low level. Does MSDN or any other source explain how to recognize an unmanaged resource? I can't seem to find any examples on the net that show unmanaged code, all the examples just have comments that say unmanaged code here. Can someone perhaps provide a realworld example where I would handle an unmanaged resources in an IDispose interface? I provided the IDisposable interface for your convience. How do I identify an unmanaged resource? Thanks in advance! IDisposable Reference Public Class Sample : Implements IDisposable Private disposedValue As Boolean = False 'To detect redundant calls ' IDisposable Protected Overridable Sub Dispose(ByVal disposing As Boolean) If Not Me.disposedValue Then If disposing Then ' TODO: free other state (managed objects). End If ' TODO: free your own state (unmanaged objects). ' TODO: set large fields to null. End If Me.disposedValue = True End Sub ' This code added by Visual Basic to correctly implement the disposable pattern. Public Sub Dispose() Implements IDisposable.Dispose ' Do not change this code. Put cleanup code in Dispose(ByVal disposing As Boolean) above. Dispose(True) GC.SuppressFinalize(Me) End Sub End Class

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  • Python metaclass for enforcing immutability of custom types

    - by Mark Lehmacher
    Having searched for a way to enforce immutability of custom types and not having found a satisfactory answer I came up with my own shot at a solution in form of a metaclass: class ImmutableTypeException( Exception ): pass class Immutable( type ): ''' Enforce some aspects of the immutability contract for new-style classes: - attributes must not be created, modified or deleted after object construction - immutable types must implement __eq__ and __hash__ ''' def __new__( meta, classname, bases, classDict ): instance = type.__new__( meta, classname, bases, classDict ) # Make sure __eq__ and __hash__ have been implemented by the immutable type. # In the case of __hash__ also make sure the object default implementation has been overridden. # TODO: the check for eq and hash functions could probably be done more directly and thus more efficiently # (hasattr does not seem to traverse the type hierarchy) if not '__eq__' in dir( instance ): raise ImmutableTypeException( 'Immutable types must implement __eq__.' ) if not '__hash__' in dir( instance ): raise ImmutableTypeException( 'Immutable types must implement __hash__.' ) if _methodFromObjectType( instance.__hash__ ): raise ImmutableTypeException( 'Immutable types must override object.__hash__.' ) instance.__setattr__ = _setattr instance.__delattr__ = _delattr return instance def __call__( self, *args, **kwargs ): obj = type.__call__( self, *args, **kwargs ) obj.__immutable__ = True return obj def _setattr( self, attr, value ): if '__immutable__' in self.__dict__ and self.__immutable__: raise AttributeError( "'%s' must not be modified because '%s' is immutable" % ( attr, self ) ) object.__setattr__( self, attr, value ) def _delattr( self, attr ): raise AttributeError( "'%s' must not be deleted because '%s' is immutable" % ( attr, self ) ) def _methodFromObjectType( method ): ''' Return True if the given method has been defined by object, False otherwise. ''' try: # TODO: Are we exploiting an implementation detail here? Find better solution! return isinstance( method.__objclass__, object ) except: return False However, while the general approach seems to be working rather well there are still some iffy implementation details (also see TODO comments in code): How do I check if a particular method has been implemented anywhere in the type hierarchy? How do I check which type is the origin of a method declaration (i.e. as part of which type a method has been defined)?

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  • .NET: How do I know if I have an unmanaged resource?

    - by Shiftbit
    I've read that unmanaged resource are considered file handles, streams, anything low level. Does MSDN or any other source explain how to recognize an unmanaged resource? I can't seem to find any examples on the net that show unmanaged code, all the examples just have comments that say unmanaged code here. Can someone perhaps provide a realworld example where I would handle an unmanaged resources in an IDispose interface? I provided the IDisposable interface for your convience. How do I identify an unmanaged resource? Thanks in advance! IDisposable Reference Public Class Sample : Implements IDisposable Private disposedValue As Boolean = False 'To detect redundant calls ' IDisposable Protected Overridable Sub Dispose(ByVal disposing As Boolean) If Not Me.disposedValue Then If disposing Then ' TODO: free other state (managed objects). End If ' TODO: free your own state (unmanaged objects). ' TODO: set large fields to null. End If Me.disposedValue = True End Sub ' This code added by Visual Basic to correctly implement the disposable pattern. Public Sub Dispose() Implements IDisposable.Dispose ' Do not change this code. Put cleanup code in Dispose(ByVal disposing As Boolean) above. Dispose(True) GC.SuppressFinalize(Me) End Sub End Class

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  • shell scripting: search/replace & check file exist

    - by johndashen
    I have a perl script (or any executable) E which will take a file foo.xml and write a file foo.txt. I use a Beowulf cluster to run E for a large number of XML files, but I'd like to write a simple job server script in shell (bash) which doesn't overwrite existing txt files. I'm currently doing something like #!/bin/sh PATTERN="[A-Z]*0[1-2][a-j]"; # this matches foo in all cases todo=`ls *.xml | grep $PATTERN -o`; isdone=`ls *.txt | grep $PATTERN -o`; whatsleft=todo - isdone; # what's the unix magic? #tack on the .xml prefix with sed or something #and then call the job server; jobserve E "$whatsleft"; and then I don't know how to get the difference between $todo and $isdone. I'd prefer using sort/uniq to something like a for loop with grep inside, but I'm not sure how to do it (pipes? temporary files?) As a bonus question, is there a way to do lookahead search in bash grep? To clarify: so the simplest way to do what i'm asking is (in pseudocode) for i in `/bin/ls *.xml` do replace xml suffix with txt if [that file exists] add to whatsleft list end done

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  • Writing to a file in Python inserts null bytes

    - by Javier Badia
    I'm writing a todo list program. It keeps a file with a thing to do per line, and lets the user add or delete items. The problem is that for some reason, I end up with a lot of zero bytes at the start of the file, even though the item is correctly deleted. I'll show you a couple of screenshots to make sure I'm making myself clear. This is the file in Notepad++ before running the program: This is the file after deleting item 3 (counting from 1): This is the relevant code. The actual program is bigger, but running just this part triggers the error. import os TODO_FILE = r"E:\javi\code\Python\todo-list\src\todo.txt" def del_elems(f, delete): """Takes an open file and either a number or a list of numbers, and deletes the lines corresponding to those numbers (counting from 1).""" if isinstance(delete, int): delete = [delete] lines = f.readlines() f.truncate(0) counter = 1 for line in lines: if counter not in delete: f.write(line) counter += 1 f = open(TODO_FILE, "r+") del_elems(f, 3) f.close() Could you please point out where's the mistake?

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  • Problem with Unit testing of ASP.NET project (NullReferenceException when running the test)

    - by Alex
    Hi, I'm trying to create a bunch of MS visual studio unit tests for my n-tiered web app but for some reason I can't run those tests and I get the following error - "Object reference not set to an instance of an object" What I'm trying to do is testing of my data access layer where I use LINQ data context class to execute a certain function and return a result,however during the debugging process I found out that all the tests fail as soon as they get to the LINQ data context class and it has something to do with the connection string but I cant figure out what is the problem. The debugging of tests fails here(the second line): public EICDataClassesDataContext() : base(global::System.Configuration.ConfigurationManager.ConnectionStrings["EICDatabaseConnectionString"].ConnectionString, mappingSource) { OnCreated(); } And my test is as follows: TestMethod()] public void OnGetCustomerIDTest() { FrontLineStaffDataAccess target = new FrontLineStaffDataAccess(); // TODO: Initialize to an appropriate value string regNo = "jonh"; // TODO: Initialize to an appropriate value int expected = 10; // TODO: Initialize to an appropriate value int actual; actual = target.OnGetCustomerID(regNo); Assert.AreEqual(expected, actual); } The method which I call from DAL is: public int OnGetCustomerID(string regNo) { using (LINQDataAccess.EICDataClassesDataContext dataContext = new LINQDataAccess.EICDataClassesDataContext()) { IEnumerable<LINQDataAccess.GetCustomerIDResult> sProcCustomerIDResult = dataContext.GetCustomerID(regNo); int customerID = sProcCustomerIDResult.First().CustomerID; return customerID; } } So basically everything fails after it reaches the 1st line of DA layer method and when it tries to instantiate the LINQ data access class... I've spent around 10 hours trying to troubleshoot the problem but no result...I would really appreciate any help! UPDATE: Finally I've fixed this!!!!:) I dont know why but for some reasons in the app.config file the connection to my database was as follows: AttachDbFilename=|DataDirectory|\EICDatabase.MDF So what I did is I just changed the path and instead of |DataDirectory| I put the actual path where my MDF file sits,i.e C:\Users\1\Documents\Visual Studio 2008\Projects\EICWebSystem\EICWebSystem\App_Data\EICDatabase.mdf After I had done that it worked out!But still it's a bit not clear what was the problem...probably incorrect path to the database?My web.config of ASP.NET project contains the |DataDirectory|\EICDatabase.MDF path though..

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  • Run a .java file using ProcessBuilder

    - by David K
    I'm a novice programmer working in Eclipse, and I need to get multiple processes running (this is going to be a simulation of a multi-computer system). My initial hackup used multiple threads to multiple classes, but now I'm trying to replace the threads with processes. From my reading, I've gleaned that ProcessBuilder is the way to go. I have tried many many versions of the input you see below, but cannot for the life of me figure out how to properly use it. I am trying to run the .java files I previously created as classes (which I have modified). I eventually just made a dummy test.java to make sure my process is working properly - its only function is to print that it ran. My code for the two files are below. Am I using ProcessBuilder correctly? Is this the correct way to read the output of my subprocess? Any help would be much appreciated. David primary process package Control; import java.io.*; import java.lang.*; public class runSPARmatch { /** * @param args */ public static void main(String args[]) { try { ProcessBuilder broker = new ProcessBuilder("javac.exe","test.java","src\\Broker\\"); Process runBroker = broker.start(); Reader reader = new InputStreamReader(runBroker.getInputStream()); int ch; while((ch = reader.read())!= -1) System.out.println((char)ch); reader.close(); runBroker.waitFor(); System.out.println("Program complete"); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } } } subprocess package Broker; public class test { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub System.out.println("This works"); } }

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  • JMS MessageCreator.createMessage() in Grails

    - by Hans Wurst
    Hi there, I am trying to implement jms to my grails application. I have several JMS consumer in a spring based enviroment listining on an ActiveMQ broker. I wrote a simple test commandline client which creates messages and receives them in an request response manner. Here is the snippet that sends a MapMessage in Spring JMS way. This works for me as long I am in my spring world. final String corrID = UUID.randomUUID().toString(); asyncJmsTemplate.send("test.RequestQ", new MessageCreator() { public Message createMessage(Session session) throws JMSException { try { MapMessage msg = session.createMapMessage(); msg.setStringProperty("json", mapper.writeValueAsString(List<of some objects>)); msg.setJMSCorrelationID(corrID); msg.setJMSReplyTo(session.createQueue("test.ReplyQ")); return msg; } catch (JsonGenerationException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (JsonMappingException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } return null; } }); BUT when I tried to implement this methods to my grails test app I receive some METHOD_DEF exceptions. Sending simple TextMessages via the jmsTemplate.convertAndSende(Queue, Message) provided by the JMS Plugin works. Can any one help me? Is this a common problem? Cheers Hans

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  • Can I perform some processing on the POST data before ASP.NET MVC UpdateModel happens?

    - by Domenic
    I would like to strip out non-numeric elements from the POST data before using UpdateModel to update the copy in the database. Is there a way to do this? // TODO: it appears I don't even use the parameter given at all, and all the magic // happens via UpdateModel and the "controller's current value provider"? [HttpPost] public ActionResult Index([Bind(Include="X1, X2")] Team model) // TODO: stupid magic strings { if (this.ModelState.IsValid) { TeamContainer context = new TeamContainer(); Team thisTeam = context.Teams.Single(t => t.TeamId == this.CurrentTeamId); // TODO HERE: apply StripWhitespace() to the data before using UpdateModel. // The data is currently somewhere in the "current value provider"? this.UpdateModel(thisTeam); context.SaveChanges(); this.RedirectToAction(c => c.Index()); } else { this.ModelState.AddModelError("", "Please enter two valid Xs."); } // If we got this far, something failed; redisplay the form. return this.View(model); } Sorry for the terseness, up all night working on this; hopefully my question is clear enough? Also sorry since this is kind of a newbie question that I might be able to get with a few hours of documentation-trawling, but I'm time-pressured... bleh.

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  • how to continuously send data without blocking?

    - by Donal Rafferty
    I am trying to send rtp audio data from my Android application. I currently can send 1 RTP packet with the code below and I also have another class that extends Thread that listens to and receives RTP packets. My question is how do I continuously send my updated buffer through the packet payload without blocking the receiving thread? public void run() { isRecording = true; android.os.Process.setThreadPriority (android.os.Process.THREAD_PRIORITY_URGENT_AUDIO); int buffersize = AudioRecord.getMinBufferSize(8000, AudioFormat.CHANNEL_CONFIGURATION_MONO, AudioFormat.ENCODING_PCM_16BIT); Log.d("BUFFERSIZE","Buffer size = " + buffersize); arec = new AudioRecord(MediaRecorder.AudioSource.MIC, 8000, AudioFormat.CHANNEL_CONFIGURATION_MONO, AudioFormat.ENCODING_PCM_16BIT, buffersize); short[] readBuffer = new short[80]; byte[] buffer = new byte[160]; arec.startRecording(); while(arec.getRecordingState() == AudioRecord.RECORDSTATE_RECORDING){ int frames = arec.read(readBuffer, 0, 80); @SuppressWarnings("unused") int lenghtInBytes = codec.encode(readBuffer, 0, buffer, frames); RtpPacket rtpPacket = new RtpPacket(); rtpPacket.setV(2); rtpPacket.setX(0); rtpPacket.setM(0); rtpPacket.setPT(0); rtpPacket.setSSRC(123342345); rtpPacket.setPayload(buffer, 160); try { rtpSession2.sendRtpPacket(rtpPacket); } catch (UnknownHostException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (RtpException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } } So when I send on one device and receive on another I get decent audio, but when I send and receive on both I get broken sound like its taking turns to send and receive audio. I have a feeling it could be to do with the while loop? it could be looping around in there and not letting anything else run?

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  • How can we call an activity through service in android???

    - by Shalini Singh
    Hi! friends, i am a android developer,,, want to know is it possible to call an activity through background service in android like : import android.app.Service; import android.content.Intent; import android.content.SharedPreferences; import android.media.MediaPlayer; import android.os.Handler; import android.os.IBinder; import android.os.Message; public class background extends Service{ private int timer1; @Override public void onCreate() { // TODO Auto-generated method stub super.onCreate(); SharedPreferences preferences = getSharedPreferences("SaveTime", MODE_PRIVATE); timer1 = preferences.getInt("time", 0); startservice(); } @Override public IBinder onBind(Intent arg0) { // TODO Auto-generated method stub return null; } private void startservice() { Handler handler = new Handler(); handler.postDelayed(new Runnable(){ public void run() { mediaPlayerPlay.sendEmptyMessage(0); } }, timer1*60*1000); } private Handler mediaPlayerPlay = new Handler(){ @Override public void handleMessage(Message msg) { try { getApplication(); MediaPlayer mp = new MediaPlayer(); mp = MediaPlayer.create(background.this, R.raw.alarm); mp.start(); } catch(Exception e) { e.printStackTrace(); } super.handleMessage(msg); } }; /* * (non-Javadoc) * * @see android.app.Service#onDestroy() */ @Override public void onDestroy() { // TODO Auto-generated method stub super.onDestroy(); } } i want to call my activity......

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  • Beginner: Restore previously serialized JFrame-object, how?

    - by elementz
    Hi all. I have managed to serialize my very basic GUI-object containing a JTextArea and a few buttons to a file 'test.ser'. Now, I would like to completely restore the previously saved state from 'test.ser', but seem to have a misconception of how to properly deserialize an objects state. The class MyFrame creates the JFrame and serializes it. Now I tried to deserialize like so: public class Deserialize { static Deserialize ds; MyFrame frame; public static void main(String[] args) { try { ds.deserialize(); } catch (ClassNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } } public void deserialize() throws ClassNotFoundException { try { ObjectInputStream ois = new ObjectInputStream(new FileInputStream("test.ser")); frame = (MyFrame) ois.readObject(); ois.close(); } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } } Maybe somebody could point me into the direction where my misconception is? Thx in advance!

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  • jQuery Checkbox Error

    - by Zack Fernandes
    Hello, I am working on a jQuery-based todo list interface, and have hit a bit of a wall. The jQuery I am working with is a bit hacked together from various tutorials I have read, as I'm a bit of a beginner. $('#todo input:checkbox').click(function(){ var id = this.attr("value"); if(!$(this).is(":checked")) { alert("Starting."); $.ajax({ type: "GET", url: "/todos/check/"+id, success: function(){ alert("It worked.") } }); } }) This is the HTML I am using, <div id="todo"> <input type="checkbox" checked="yes" value="1"> Hello, world. <br /> </div> Any help on this would be greatly appreciated. For reference, thereason I have alerts in the jQuery is for debugging. The reason I can tell the code isn't working is because I am not getting these alerts. Thanks.

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  • No GPS Update retrieved? Problem in Code?

    - by poeschlorn
    Hello mates, I've got a serious problem with my GPS on my Nexus One: I wrote a kind of hello world with GPS, but the Toast that should be displayed isn't :( I don't know what I'm doing wrong...maybe you could help me getting this work. Here's my code: package gps.test; import android.app.Activity; import android.content.Context; import android.location.Location; import android.location.LocationListener; import android.location.LocationManager; import android.os.Bundle; import android.widget.Toast; public class GPS extends Activity { private LocationManager lm; private LocationListener locationListener; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); // ---use the LocationManager class to obtain GPS locations--- lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE); locationListener = new MyLocationListener(); lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 100, 1, locationListener); } private class MyLocationListener implements LocationListener { @Override public void onLocationChanged(Location loc) { if (loc != null) { Toast.makeText( getBaseContext(), "Location changed : Lat: " + loc.getLatitude() + " Lng: " + loc.getLongitude(), Toast.LENGTH_SHORT).show(); } } @Override public void onProviderDisabled(String provider) { // TODO Auto-generated method stub } @Override public void onProviderEnabled(String provider) { // TODO Auto-generated method stub } @Override public void onStatusChanged(String provider, int status, Bundle extras) { // TODO Auto-generated method stub } } } Theoretically there should be a new toast every 100 milliseconds, shouldn't it? Or at least, when I change my position by one meter!? I've no idea why it doesn't. I must admit I'm new to the topic, maybe I've missed something? It would be great if you could give me a hint :) nice greetings, poeschlorn

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  • Updating an application OTA

    - by Bostjan
    I'm developing an application that will be available from a website (market probably as well). The problem I'm having at the moment is how to handle the updates to the app. I know how to check the version against the current one and I know if I need to update it. Question is...how? Is there a way I can download an APK from the website and start the install process? The user will have to confirm of course, but I just want to be able to start it for him. At the moment I'm doing this: private void doUpgrade() { // TODO Auto-generated method stub Builder builder = new AlertDialog.Builder(this); builder.setTitle(getString(R.string.upgrade)); builder.setIcon(R.drawable.help); builder.setMessage(getString(R.string.needUpgrade)); builder.setPositiveButton(getString(R.string.ok), new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub Map<String, String> data = new HashMap<String, String>(); try { HttpResponse re = Registration.doPost("http://www.android-town.com/appRelease/AndroidTown.apk",data); int statusCode = re.getStatusLine().getStatusCode(); closeApp(); } catch (ClientProtocolException e) { e.printStackTrace(); Toast.makeText(getApplicationContext(), getString(R.string.noURLAccess), Toast.LENGTH_SHORT).show(); closeApp(); } catch (IOException e) { e.printStackTrace(); Toast.makeText(getApplicationContext(), getString(R.string.noURLAccess), Toast.LENGTH_SHORT).show(); closeApp(); } } }); builder.setNegativeButton(getString(R.string.cancel), new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub dialog.cancel(); closeApp(); } }); builder.show(); } But it doesn't really do anything...should I open a webView with the URL? A new runnable thread? Any other way? Please help :) Cheers

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  • GPS not update location after close and reopen app on android

    - by mrmamon
    After I closed my app for a while then reopen it again,my app will not update location or sometime it will take long time( about 5min) before update. How can I fix it? This is my code private LocationManager lm; private LocationListener locationListener; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE); locationListener = new mLocationListener(); lm.requestLocationUpdates( LocationManager.GPS_PROVIDER, 0, 0, locationListener); } private class myLocationListener implements LocationListener { @Override public void onLocationChanged(Location loc) { if (loc != null) { TextView gpsloc = (TextView) findViewById(R.id.widget28); gpsloc.setText("Lat:"+loc.getLatitude()+" Lng:"+ loc.getLongitude()); } } @Override public void onProviderDisabled(String provider) { // TODO Auto-generated method stub TextView gpsloc = (TextView) findViewById(R.id.widget28); gpsloc.setText("GPS OFFLINE."); } @Override public void onProviderEnabled(String provider) { // TODO Auto-generated method stub } @Override public void onStatusChanged(String provider, int status, Bundle extras) { // TODO Auto-generated method stub } }

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  • MySQL nested CASE error I need help with?

    - by AK
    What I am trying to do here is: IF the records in table todo as identified in $done have a value in the column recurinterval then THEN reset date_scheduled column ELSE just set status_id column to 6 for those records. This is the error I get from mysql_error() ... You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'CASE recurinterval != 0 AND recurinterval IS NOT NULL THEN SET date_sche' at line 2 How can I make this statement work? UPDATE todo CASE recurinterval != 0 AND recurinterval IS NOT NULL THEN SET date_scheduled = CASE recurunit WHEN 'DAY' THEN DATE_ADD(date_scheduled, INTERVAL recurinterval DAY) WHEN 'WEEK' THEN DATE_ADD(date_scheduled, INTERVAL recurinterval WEEK) WHEN 'MONTH' THEN DATE_ADD(date_scheduled, INTERVAL recurinterval MONTH) WHEN 'YEAR' THEN DATE_ADD(date_scheduled, INTERVAL recurinterval YEAR) END WHERE todo_id IN ($done) ELSE SET status_id = 6 WHERE todo_id IN ($done) END The following mySQL statement worked just fine before I revised like above. UPDATE todo SET date_scheduled = CASE recurunit WHEN 'DAY' THEN DATE_ADD(date_scheduled, INTERVAL recurinterval DAY) WHEN 'WEEK' THEN DATE_ADD(date_scheduled, INTERVAL recurinterval WEEK) WHEN 'MONTH' THEN DATE_ADD(date_scheduled, INTERVAL recurinterval MONTH) WHEN 'YEAR' THEN DATE_ADD(date_scheduled, INTERVAL recurinterval YEAR) END WHERE todo_id IN ($done) AND recurinterval != 0 AND recurinterval IS NOT NULL

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  • camera picturecallback intent not work

    - by Simon
    After I take the photo, the program automatically goes back like onBackPressed(). When I remove the putExtra, the intent runs. When I put startActivity() after takePicture(), it transfers null data.... I just want to put the image data to another activity to have other use. How can it be achieved? private PictureCallback picture = new PictureCallback(){ @Override public void onPictureTaken(byte[] data, Camera camera) { // TODO Auto-generated method stub Intent intent = new Intent(CameraFilming.this, PhotoPreview.class); intent.putExtra("imageByte", data); //Picture data transfer to next activity startActivity(intent); } }; //take photo by pressing button private class captureBtnListener implements View.OnClickListener{ @Override public void onClick(View v){ capture.setOnClickListener(null); CountDownTimer timer = new CountDownTimer(10000, 1000){ @Override public void onTick(long millisUntilFinished) { // TODO Auto-generated method stub countdown.setText(millisUntilFinished/1000+""); } @Override public void onFinish() { // TODO Auto-generated method stub countdown.setText("0"); camera.takePicture(null, null, picture); } }; timer.start(); } } public class PhotoPreview extends Activity{ private RelativeLayout layout; private ImageView overlay, texture, face1, face2; @Override public void onCreate (Bundle savedInstanceState){ super.onCreate(savedInstanceState); setContentView(R.layout.photo_preview); layout = (RelativeLayout)findViewById(R.id.preview_layout); byte[] data = getIntent().getByteArrayExtra("imageByte"); if (data == null){ Log.d("PhotoPreview", "no image data"); finish(); } Bitmap rawPhotoBitmap = BitmapFactory.decodeByteArray(data, 0, data.length); ImageProcess imgProcess = new ImageProcess(this); Bitmap resizedFace = imgProcess.scaleAccordingWidth(imgProcess.cropImage(rawPhotoBitmap, 840, 125, 440, 560), 77); face1 = new ImageView(this); face1.setImageBitmap(resizedFace); Log.d("testing", "testing"); } }

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