Android：onTouchListener-当用户将触摸移动到视图外部时取消触摸事件

Question

We've all done it, when we hold down on a button we're not sure we want to click or not, and while holding down on the screen still, we move our finger so the touch event doesn't fire.

I'd like to mimic this behavior with my onTouchListener. I have a list of cards. Every card has an onTouchListener that fires an Intent on touch event UP. If the user moves the finger off of the card while still holding down on the screen, I'd like to make sure that intent is not fired.

Any ideas?

Answer 1

use this code

@Override
public boolean dispatchTouchEvent(MotionEvent event) {
    switch (event.getAction()) {
        case MotionEvent.ACTION_DOWN:
            break;
        case MotionEvent.ACTION_UP:
            if (event.getX() < width && event.getY() < height) {
                //finger is on the card and fire intent
            }
            break;
    }
    return true;
}