Can't remove overlay view

Question

Update

I was able to fix this, The problem was dialogs and related could be initiated from broadcast receiver but not recommended, as the activity running ends before the view.

Trying to implement overlay like fb messenger, truecaller etc.

public class IncomingCall extends BroadcastReceiver
{
private Context pcontext;
private static final String TAG = "CustomBroadcastReceiver";
 TelephonyManager telephony;
 CustomPhoneStateListener customPhoneListener ;
@Override
public void onReceive(Context context, Intent intent) 
{
    pcontext = context;
    Bundle extras = intent.getExtras();
    if (extras != null) {
        String state = extras.getString(TelephonyManager.EXTRA_STATE);
        Log.w("DEBUG", state);

            telephony = (TelephonyManager)context.getSystemService(Context.TELEPHONY_SERVICE);
            customPhoneListener = new   CustomPhoneStateListener();
            telephony.listen(customPhoneListener,   PhoneStateListener.LISTEN_CALL_STATE);
            Bundle bundle = intent.getExtras();
            String phoneNr= bundle.getString("incoming_number");


    }


}
public class CustomPhoneStateListener extends PhoneStateListener
{
    private static final String TAG = "CustomPhoneStateListener";
    Handler handler=new Handler();
    @Override
    public void onCallStateChanged(int state, String incomingNumber) 
    {

        WindowManager wm = (WindowManager) pcontext.getSystemService(Context.WINDOW_SERVICE);

        WindowManager.LayoutParams params = new WindowManager.LayoutParams(
            LayoutParams.MATCH_PARENT,
            LayoutParams.MATCH_PARENT, WindowManager.LayoutParams.TYPE_SYSTEM_ALERT |
            WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY,
            WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL |
            WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
            PixelFormat.TRANSPARENT);

        params.height = LayoutParams.MATCH_PARENT;
        params.width = LayoutParams.MATCH_PARENT;
        params.format = PixelFormat.TRANSLUCENT;

        params.gravity = Gravity.BOTTOM;

        RelativeLayout ly;
        final LayoutInflater inflater = (LayoutInflater) pcontext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        ly = (RelativeLayout) inflater.inflate(R.layout.dialog, null);

        switch (state) 
        {
        case TelephonyManager.CALL_STATE_RINGING:
            Log.d("Call","RINGING");

            wm.addView(ly, params);
            break;

        case TelephonyManager.CALL_STATE_IDLE:

                Log.d("Call","End");
                //WindowManager wm = (WindowManager) pcontext.getSystemService(Context.WINDOW_SERVICE);

                if(ly!=null)
                {
                    wm.removeView(ly);
                    ly = null;
                }
            break;
        default:
            break;
        }
        super.onCallStateChanged(state, incomingNumber);
        telephony.listen(customPhoneListener, PhoneStateListener.LISTEN_NONE);
    }


}       
}

The addView works fine, Here is the log

"View not attached to window manager"

08-24 20:05:56.404: W/DEBUG(28001): IDLE
08-24 20:05:56.424: D/Call(28001): End
08-24 20:05:56.424: D/AndroidRuntime(28001): Shutting down VM
08-24 20:05:56.424: W/dalvikvm(28001): threadid=1: thread exiting with uncaught exception (group=0x412982a0)
08-24 20:05:56.444: E/AndroidRuntime(28001): FATAL EXCEPTION: main
08-24 20:05:56.444: E/AndroidRuntime(28001): java.lang.IllegalArgumentException: View not attached to window manager
08-24 20:05:56.444: E/AndroidRuntime(28001):    at android.view.WindowManagerImpl.findViewLocked(WindowManagerImpl.java:673)
08-24 20:05:56.444: E/AndroidRuntime(28001):    at android.view.WindowManagerImpl.removeView(WindowManagerImpl.java:369)
08-24 20:05:56.444: E/AndroidRuntime(28001):    at android.view.WindowManagerImpl$CompatModeWrapper.removeView(WindowManagerImpl.java:160)
08-24 20:05:56.444: E/AndroidRuntime(28001):    at com.androidexample.broadcastreceiver.IncomingCall$CustomPhoneStateListener.onCallStateChanged(IncomingCall.java:105)
08-24 20:05:56.444: E/AndroidRuntime(28001):    at android.telephony.PhoneStateListener$2.handleMessage(PhoneStateListener.java:393)
08-24 20:05:56.444: E/AndroidRuntime(28001):    at android.os.Handler.dispatchMessage(Handler.java:99)
08-24 20:05:56.444: E/AndroidRuntime(28001):    at android.os.Looper.loop(Looper.java:137)
08-24 20:05:56.444: E/AndroidRuntime(28001):    at android.app.ActivityThread.main(ActivityThread.java:4898)
08-24 20:05:56.444: E/AndroidRuntime(28001):    at java.lang.reflect.Method.invokeNative(Native Method)
08-24 20:05:56.444: E/AndroidRuntime(28001):    at java.lang.reflect.Method.invoke(Method.java:511)
08-24 20:05:56.444: E/AndroidRuntime(28001):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1008)
08-24 20:05:56.444: E/AndroidRuntime(28001):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:775)
08-24 20:05:56.444: E/AndroidRuntime(28001):    at dalvik.system.NativeStart.main(Native Method)
08-24 20:08:22.669: I/Process(28001): Sending signal. PID: 28001 SIG: 9

I had tried creating the layout programmaticaly too.. but no luck

Also can't figure out the id of the generated layout

Answer 1

The problem was, we cant use dialogs in broadcast receiver and it has to be in another activity that could be started with intent.

Answer 2

This method is called when the BroadcastReceiver is receiving an Intent broadcast. During this time you can use the other methods on BroadcastReceiver to view/modify the current result values. This method is always called within the main thread of its process, unless you explicitly asked for it to be scheduled on a different thread using registerReceiver(BroadcastReceiver, IntentFilter, String, android.os.Handler). When it runs on the main thread you should never perform long-running operations in it (there is a timeout of 10 seconds that the system allows before considering the receiver to be blocked and a candidate to be killed). You cannot launch a popup dialog in your implementation of onReceive().

The Android Documentation clearly says it.

Android Documentation on BroadcastReceiver