onTouch, onLongClick together in android

SANDHYA picture SANDHYA · Jun 8, 2012 · Viewed 17.8k times · Source

I'am adding imageviews to parent layout dynamically. And i'am performing zoom in/out operations onTouch of added image. I want to remove the added view onLongPress of it.

img.setOnLongClickListener(longClickAction);
img.setOnTouchListener(touchAction); 

onLongPress :

OnLongClickListener longClickAction = new OnLongClickListener() {

    @Override
    public boolean onLongClick(View v) {

        parentLayout.removeView((ImageView)v);
        return false;
    }
};

onTouch :

OnTouchListener touchAction = new OnTouchListener() {

    @Override
    public boolean onTouch(View v, MotionEvent event) {
        ImageView i = (ImageView)v;

        //perfrom zoom operation on touch of imageview
        zoom(i, event);
        return true; 

    }
};

Only Touch events are working. Why? How can i have both? Where iam going wrong? What should i do to remove added view? Please help me. Thanks in advance.

Answer

asenovm picture asenovm · Jun 8, 2012

onTouch is always called for your view since this is the initial state of dispatching the events to the view. When you long press your view this still calls onTouch first and since you return true in onTouch(which means that you've consumed this event and it should not be further dispatched) you won't get onLongPress called. What will do the trick is returning false in onTouch