'Activity not attached to windows manager

I have a floating widget (that draws over all the apps) that on long click (mouse hold) will show a relative layout (remove_relativelayout) from the bottom so that the user can close the widget and the service will be destroyed.

On most Samsung phones I get this crash:

Fatal Exception: java.lang.IllegalArgumentException: View=android.widget.RelativeLayout{762db5 G.E...... ......ID 0,0-160,160 #7f09022d app:id/remove_relativelayout} not attached to window manager
       at android.view.WindowManagerGlobal.findViewLocked(WindowManagerGlobal.java:569)
       at android.view.WindowManagerGlobal.updateViewLayout(WindowManagerGlobal.java:463)
       at android.view.WindowManagerImpl.updateViewLayout(WindowManagerImpl.java:101)
       at com.xxxx.dev.floatingwidget.services.FloatingWidgetServices.lambda$widgetLongClick$0(FloatingWidgetServices.java:20)
       at com.xxxxx.dev.floatingwidget.services.FloatingWidgetServices.lambda$widgetLongClick$0$FloatingWidgetServices(FloatingWidgetServices.java)
       at com.xxxxxx.dev.floatingwidget.services.-$$Lambda$FloatingWidgetServices$DhV3rKQxnQ9oEEnb70PNAJKR8NQ.onAnimationUpdate(-.java:4)
       at android.animation.ValueAnimator.animateValue(ValueAnimator.java:1558)
       at android.animation.ValueAnimator.animateBasedOnTime(ValueAnimator.java:1349)
       at android.animation.ValueAnimator.doAnimationFrame(ValueAnimator.java:1481)
       at android.animation.AnimationHandler.doAnimationFrame(AnimationHandler.java:146)
       at android.animation.AnimationHandler.access$100(AnimationHandler.java:37)
       at android.animation.AnimationHandler$1.doFrame(AnimationHandler.java:54)
       at android.view.Choreographer$CallbackRecord.run(Choreographer.java:994)
       at android.view.Choreographer.doCallbacks(Choreographer.java:794)
       at android.view.Choreographer.doFrame(Choreographer.java:725)
       at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:981)
       at android.os.Handler.handleCallback(Handler.java:883)
       at android.os.Handler.dispatchMessage(Handler.java:100)
       at android.os.Looper.loop(Looper.java:237)
       at android.app.ActivityThread.main(ActivityThread.java:7857)
       at java.lang.reflect.Method.invoke(Method.java)
       at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1068)

Here is on start:

WindowManager.LayoutParams paramRemove = new WindowManager.LayoutParams(
                WindowManager.LayoutParams.WRAP_CONTENT,
                WindowManager.LayoutParams.WRAP_CONTENT,
                windowType,
                WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE | WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH |
                        WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS,
                PixelFormat.TRANSLUCENT);
        paramRemove.gravity = Gravity.TOP | Gravity.LEFT;

        removeView.setVisibility(View.GONE);
        removeImg = removeView.findViewById(R.id.remove_img);

        windowManager.addView(removeView, paramRemove);

I think its coming from this function but I'm not sure:

private void widgetLongClick() {
        GlobalFunctions.printLn(">>>>>>>>>>>>Into FloatingWidgetService.chathead_longclick() ");

        WindowManager.LayoutParams param_remove = (WindowManager.LayoutParams) removeView.getLayoutParams();
        int x_cord_remove = (szWindow.x - removeView.getWidth()) / 2;
        int y_cord_remove = szWindow.y - (removeView.getHeight() + getStatusBarHeight());

        param_remove.x = x_cord_remove;
        param_remove.y = y_cord_remove;

        ValueAnimator va = ValueAnimator.ofFloat(szWindow.y, y_cord_remove);
        int mDuration = 100;
        if(removeView.isAttachedToWindow()){
            if(param_remove != null){
                if(windowManager !=null){
                    va.setDuration(mDuration);
                    va.addUpdateListener(animation -> {
                        param_remove.y = Math.round((Float) animation.getAnimatedValue());
                        windowManager.updateViewLayout(removeView, param_remove);
                    });
                    va.start();
                }
            }
        }
    }
javaandroid


Solution 1:[1]

I would recommend you add this removable layout into your XML file and have it be View.GONE until you require it, this way you don't have to be worried about adding it programmatically and settings the correct layout parameters (this is probably what's failing in your current code).

Once you receive the longClick on the other View, you can toggle the removable layout to be View.VISIBLE and perhaps even add combine that with a quick animation to make it seem more 'friendly' to the user.

Solution 2:[2]

I find the solution for my problem, the problem was that I'm closing the activity before the view is loaded, so what I did is to wait for 1 sec before closing the activity, using simply:

new Handler().postDelayed(new Runnable() {
    @Override
    public void run() {
        //close the activity after 1 sec 
    }
},1000);

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 Ivan Garza
Solution 2

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