CODEWITHSUNDEEP
androidlistviewandroid-touch-event
Nik Kober
Nik Kober

Reputation: 918

Android touch event stucked in ListView

I have a container View that should process touches. It has Listview with overrided onTouch(), which returns false (it will return true, when container is expanded by swipe). When Listview touch occurs it passes to container View and everything is ok. But I need to add click handling for items of Listview.

When I set onClickListener for item, I see in logs it is no MotionEvent passed to container, it is stucked in ListView onTouch() (which return false and does nothing). I'm trying to set onTouchListener for item like this:

    viewHolder.itemLayout.setOnTouchListener(new View.OnTouchListener() {
        @Override
        public boolean onTouch(View v, MotionEvent event) {
            switch (event.getAction()) {
                case MotionEvent.ACTION_DOWN:
                    return true;

                case MotionEvent.ACTION_MOVE:
                    return false;

                case MotionEvent.ACTION_UP:
                    Log.d(TAG, "something like click detected");
                    return true;
            }
            return false;
        }
    });

But result is the same. Can someone explain why my container does not receive touch event even ListView returns false for its overrided onTouch()?

Upvotes: 0

Views: 908

Answers (2)

Wukash
Wukash

Reputation: 666

I had the same problem about 2 weeks ago. Returning false from listview's onTouch method did not pass event to parent container. I ended up doing this: 1. You need custom layout for your container View. Then in that view, override onInterceptTouchEvent, for example like this:

@Override
    public boolean onInterceptTouchEvent(MotionEvent ev) {
        switch  (ev.getAction()) {
            case MotionEvent.ACTION_DOWN:
                previousX_actionDOWN = ev.getRawX();
                isOnClick = true;
                timePressed = System.currentTimeMillis();
                return false;
            case MotionEvent.ACTION_MOVE:
                if (isOnClick && (Math.abs(previousX_actionDOWN - ev.getRawX()) > SCROLL_THRESHOLD)) {
                    return true;
                } else {
                    return false;
                }
            case MotionEvent.ACTION_UP:
                if (!wasDragged) {
                    return false;
                }
                else {
                    return true;
                }
        }
        return false;
    }

I also have complicated onTouch method in that view but it's not worth pasting. Point is that your parent view should only intercept touch event if some threshold was passed while ACTION_MOVE - well at least that's what I wanted to achieve. Then in your listview you just implement standard onItemClickListener instead of onTouch.

Upvotes: 1

sharan
sharan

Reputation: 226

If you wish to handle the clicks of ListView items : use OnItemClickListener

    listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            //parent.getItemAtPosition(position) returns the value of item clicked.. use it to do whatever you wish to do
        }
    });

Upvotes: 1

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