How to create an overlay that blocks touch events to UI below it?

Question

I used a layer of framelayout with a semi-translucent background to create an overlay. But this overlay doesn\'t block touch events to interact with the views below it. How sho

Answer 1

Following code will add overlay on top of everything :

View v1 = new View(this);    
WindowManager.LayoutParams params = new WindowManager.LayoutParams(
 1000,
 50,
 WindowManager.LayoutParams.TYPE_SYSTEM_ALERT,
 WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE |
 WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN,
 PixelFormat.OPAQUE);

params.gravity = Gravity.BOTTOM;
WindowManager wm = (WindowManager) this.getSystemService(Context.WINDOW_SERVICE);
wm.addView(v1, params);

to block the touch event either you have to change the flag or below code will work:

protected boolean onTouchEvent (MotionEvent me) {
    return true;
}

For v1 you would do an import:

import android.view.View.OnTouchListener;

Then set the onTouchListener:

v1.setOnTouchListener(new OnTouchListener() {
    @Override
    public boolean onTouch(View v, MotionEvent event) {
        return true;
    }
})