Continuous touch detection in Android

Question

I am developing an android game. I have the following code to check if my finger is on the screen

if(e.getAction() == MotionEvent.ACTION_UP) this.downPressed=false; else this.downPressed=true;

if(this.downPressed) { //move the object }

I checked using Log.e("Motion",String.valueOf(e.getAction())); When I initially place my finger on the screen, ACTION_DOWN is detected.

Then when I still have my finger on the screen, few traces of ACTION_MOVE is detected

Then when I still have my finger on the screen, nothing is detected

Finally when I take my finger off the screen, ACTION_UP is detected

I am not able to successfully detect anything when my finger is laid still on the screen. Please help me in detecting this continuous touch.

Answer 1

You should not be doing the move logic inside your onTouch event method. Rather, like you are currently doing, set a flag when TOUCH_DOWN is detected and clear when TOUCH_UP is fired. Then make an update handler that continuously runs. If the flag is set it moves the object.