Android Widget - zmiana tła na zdjęcie z galerii

0

Bazując na tutorialu stworzyłem widget. W tutorialu widget odświeża się co podaną ilość ms i zmienia wyświetlany tekst. Chcę podmienić tło layoutu z obecnego na zdjęcie wybrane z galerii ale nie wiem jak to zrobić. Stworzyłem button na widgecie ale klasie która zarządza widgetem inaczej są dodawane onclick listenery, jak to zrobić kiedy chcę aby po kliknięciu buttona wybrać zdj z galerii i przekazać je do widgetu?
Proszę o pomoc/wytłumaczenie.

public class MyWidgetProvider extends AppWidgetProvider {

	 // private static final String ACTION_CLICK = "ACTION_CLICK";

	  @Override
	  public void onUpdate(Context context, AppWidgetManager appWidgetManager,
	      int[] appWidgetIds) {
	
	    // Get all ids
	    ComponentName thisWidget = new ComponentName(context,
	        MyWidgetProvider.class);
	    
	    int[] allWidgetIds = appWidgetManager.getAppWidgetIds(thisWidget);
	    for (int widgetId : allWidgetIds) {
	      // create some random data
	      int number = (new Random().nextInt(100));

	      RemoteViews remoteViews = new RemoteViews(context.getPackageName(),
	          R.layout.widget_layout);
	      Log.w("WidgetExample", String.valueOf(number));
	      // Set the text
	      remoteViews.setTextViewText(R.id.update, String.valueOf(number));
	   
	      // Register an onClickListener
	      Intent intent = new Intent(context, MyWidgetProvider.class);
	
	      intent.setAction(AppWidgetManager.ACTION_APPWIDGET_UPDATE);
	      intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, appWidgetIds);

	      PendingIntent pendingIntent = PendingIntent.getBroadcast(context,
	          0, intent, PendingIntent.FLAG_UPDATE_CURRENT);

	      Intent intent2 = new Intent(context, BrowseImage.class);
	   
	      PendingIntent pendingIntent2 = PendingIntent.getActivity(context, 0, intent2, PendingIntent.FLAG_UPDATE_CURRENT);
	      
	  
	      remoteViews.setOnClickPendingIntent(R.id.changePhoto, pendingIntent2);
	      
	      remoteViews.setOnClickPendingIntent(R.id.update, pendingIntent);
	
	      appWidgetManager.updateAppWidget(widgetId, remoteViews);
	    }
	  }
	  
	 
	} 
 
0

Jest postęp. Tworzę nowy intent, startuje nową aktywność w której wybieram zdjęcie ale dostaję NPE kiedy chcę ustawić zdjęcie jako tło.
Dodaje zmiany do kodu poprzedniego a tutaj aktywność z galerią:



public class BrowseImage extends Activity {
	
	View view;

	private static final int SELECT_PICTURE = 1;
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_browse_image);
		view = (View) findViewById(R.id.layout);
		
		findViewById(R.id.galer).setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				Intent i = new Intent(
		                Intent.ACTION_PICK,
		android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
		    startActivityForResult(i, SELECT_PICTURE);
				
			}
		});

	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.browse_image, menu);
		return true;
	}

	@SuppressLint("NewApi")
	@Override
	protected void onActivityResult(int requestCode, int resultCode, Intent data){
        //super.onActivityResult(requestCode, resultCode, data);

        if(requestCode == SELECT_PICTURE && data != null && data.getData() != null) {
 
            Uri _uri = data.getData();
            System.out.println("DATA "+_uri);
          

            //User had pick an image.
            Cursor cursor = getContentResolver().query(_uri, new String[] { android.provider.MediaStore.Images.ImageColumns.DATA }, null, null, null);
            cursor.moveToFirst();

            //Link to the image
            final String imageFilePath = cursor.getString(0);
  
            cursor.close();
            Bitmap bm = BitmapFactory.decodeFile(imageFilePath);
 
            final BitmapDrawable drawable = new BitmapDrawable(getResources(), bm);
     
             view.setBackgroundDrawable(drawable);
             view.invalidate();
     
            
        }
       // super.onActivityResult(requestCode, resultCode, data);
    
//            
//            Intent intent = new Intent(this, MyWidgetProvider.class);
//            intent.setAction("android.appwidget.action.APPWIDGET_UPDATE");
//            int ids[] = AppWidgetManager.getInstance(getApplication()).getAppWidgetIds(new ComponentName(getApplication(), MyWidgetProvider.class));
//            intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS,ids);
//            sendBroadcast(intent);
//            
            
        }
}


Dodam, że przy rzutowaniu layoutu na RelativeLayout zamiast View też nie działa.

błąd:

02-09 10:32:46.679: E/AndroidRuntime(10327): FATAL EXCEPTION: main
02-09 10:32:46.679: E/AndroidRuntime(10327): java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1, result=-1, data=Intent { dat=content://media/external/images/media/134598 typ=image/jpeg (has extras) }} to activity {pl..valentinewidget/pl..valentinewidget.BrowseImage}: java.lang.NullPointerException
02-09 10:32:46.679: E/AndroidRuntime(10327): 	at android.app.ActivityThread.deliverResults(ActivityThread.java:3387)
02-09 10:32:46.679: E/AndroidRuntime(10327): 	at android.app.ActivityThread.handleSendResult(ActivityThread.java:3437)
02-09 10:32:46.679: E/AndroidRuntime(10327): 	at android.app.ActivityThread.access$1100(ActivityThread.java:139)
02-09 10:32:46.679: E/AndroidRuntime(10327): 	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1291)
02-09 10:32:46.679: E/AndroidRuntime(10327): 	at android.os.Handler.dispatchMessage(Handler.java:99)
02-09 10:32:46.679: E/AndroidRuntime(10327): 	at android.os.Looper.loop(Looper.java:154)
02-09 10:32:46.679: E/AndroidRuntime(10327): 	at android.app.ActivityThread.main(ActivityThread.java:4945)
02-09 10:32:46.679: E/AndroidRuntime(10327): 	at java.lang.reflect.Method.invokeNative(Native Method)
02-09 10:32:46.679: E/AndroidRuntime(10327): 	at java.lang.reflect.Method.invoke(Method.java:511)
02-09 10:32:46.679: E/AndroidRuntime(10327): 	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
02-09 10:32:46.679: E/AndroidRuntime(10327): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
02-09 10:32:46.679: E/AndroidRuntime(10327): 	at dalvik.system.NativeStart.main(Native Method)
02-09 10:32:46.679: E/AndroidRuntime(10327): Caused by: java.lang.NullPointerException
02-09 10:32:46.679: E/AndroidRuntime(10327): 	at pl..valentinewidget.BrowseImage$2.run(BrowseImage.java:90)
02-09 10:32:46.679: E/AndroidRuntime(10327): 	at android.app.Activity.runOnUiThread(Activity.java:4231)
02-09 10:32:46.679: E/AndroidRuntime(10327): 	at pl.robertosoft.valentinewidget.BrowseImage.onActivityResult(BrowseImage.java:87)
02-09 10:32:46.679: E/AndroidRuntime(10327): 	at android.app.Activity.dispatchActivityResult(Activity.java:4740)
02-09 10:32:46.679: E/AndroidRuntime(10327): 	at android.app.ActivityThread.deliverResults(ActivityThread.java:3383)
02-09 10:32:46.679: E/AndroidRuntime(10327): 	... 11 more

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