Detect power button long press

Question

I\'ve been reading some posts here on Stackoverflow, and I didn\'t find a good solution, I\'m wondering if it\'s possible to detect when the user long press the power button

Answer 1

This simple solution works:

    @Override
public boolean dispatchKeyEvent(KeyEvent event) {
    int keyPressed = event.getKeyCode();
    if(keyPressed==KeyEvent.KEYCODE_POWER){
        Log.d("###","Power button long click");
        Toast.makeText(MainActivity.this, "Clicked: "+keyPressed, Toast.LENGTH_SHORT).show();
        return true;}
    else
        return super.dispatchKeyEvent(event);
}

If you want to stop system pop-up, use the onWindowFocusChangedmethod specified in one of the answers below.

The output will show the toast with "Clicked:26" as attached below.