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POWindowManager is unable to show Window View on screen even though it's visibility property is true
 

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    <p>My application shows UI based on events received in various BroacastReceiver . Since I need to generate view directly from BroadcastReceiver I use code like this :</p> <pre><code>mWindowManager = (WindowManager) context .getSystemService(Context.WINDOW_SERVICE); WindowManager.LayoutParams lp = new WindowManager.LayoutParams( LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT, WindowManager.LayoutParams.TYPE_TOAST, WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE, PixelFormat.OPAQUE); TextView view = new TextView(context); view.setText("You got Broadcast !"); mainView = view; mWindowManager.addView(view, lp); Log.d("MyApp"," View shown ") </code></pre> <p>This code displays TextView with text "You got Broadcast" properly when I receive BroadcastReceiver event when my main application activity is accessed beforehand. Means if my application is in memory and my main activity has been shown. </p> <p>Now when I restart phone and my BroadcastReceiver receives event everything works fine. Infact I can see the debug statement "MyApp, View shown" in logcat. But strangely, actual view with text "You got Broadcast" does not appear on screen. Now again I launch my main activity and press home button . Now if BroadcastReceiver again receives event, it is now able to show the texview with text "You got Broadcast" properly.</p> <p>At present I'm not doing anything in main activity apart from showing default generated xml layout. It's dead simple code :</p> <pre><code>public class MainActivity extends Activity { public static final String TAG = "MainActivity"; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); Log.d(TAG, " Main screen"); } </code></pre> <p>}</p> <p>Am I missing some screen/graphics initialization which happens when main activity is launched ? Or do I need to pass on any additional parameter to WindowManager ?</p>
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