How to detect when finger slides off the ImageButton?

问题

I have an Imagebutton and I setColorFilter on ActionDOWN, but if user Slide the finger off the ImageButton, it remains with setColorFilter applied.

Question:

How to detect when finger slides off? Then I can apply setColorFilter(null);

ImageButton i1 = (ImageButton)v.findViewById(R.id.imageButton1); i1.setOnTouchListener(new OnTouchListener() {

        @Override
        public boolean onTouch(View v, MotionEvent event) {
            // TODO Auto-generated method stub
            ImageButton button = (ImageButton)v;
            String principal = "principal";
            if (event.getAction() == MotionEvent.ACTION_DOWN) {
                button.setColorFilter(0x8066bbdd);
                return true;
            } else if (event.getAction() == MotionEvent.ACTION_UP) {
                button.setColorFilter(null);
                Intent i = new Intent(getActivity(), SubView.class);
                i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                i.putExtra("query", principal);
                startActivity(i);
                return true;
            }
            return false;
        }
    });

回答1:

You can use MotionEvent.ACTION_OUTSIDE

ImageButton i1 = (ImageButton)v.findViewById(R.id.imageButton1); i1.setOnTouchListener(new OnTouchListener() {

    @Override
    public boolean onTouch(View v, MotionEvent event) {
        // TODO Auto-generated method stub
        ImageButton button = (ImageButton)v;
        String principal = "principal";
        if (event.getAction() == MotionEvent.ACTION_DOWN) {
            button.setColorFilter(0x8066bbdd);
            return true;
        } else if (event.getAction() == MotionEvent.ACTION_UP) {
            button.setColorFilter(null);
            Intent i = new Intent(getActivity(), SubView.class);
            i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
            i.putExtra("query", principal);
            startActivity(i);
            return true;
        } else if(event.getAction() == MotionEvent.ACTION_OUTSIDE)
        {

            // Do some stuffs here
        }

        return false;
    }
});

UPDATE 1:

If MotionEvent.ACTION_OUTSIDE Doesn't worked you can try MotionEvent.ACTION_CANCEL

来源：https://stackoverflow.com/questions/14414873/how-to-detect-when-finger-slides-off-the-imagebutton

标签

android

touch

imagebutton