Android Update ListView on scrolling down

Question

I want ot update my listView when I scroll down I do this :

mConnectionList.setOnTouchListener(new View.OnTouchListener() {
        @Override
        public boolean onTouch(View v, MotionEvent event) {

            int action = event.getAction();
            switch (action) {
                case MotionEvent.ACTION_DOWN:
                    if( mConnectionList.getLastVisiblePosition() == connectionList.size()-1 ){
                        getConnections();
                    }
                    break;
                case MotionEvent.ACTION_UP:
                    isCrollingDown.set(false);
                    break;
                default:
            }
            return false;
        }
    });

But it does not work corretlly it update when I scroll down and update when I scroll up

Also I try do this but it doesn not work coretly too :

        mConnectionList.setOnScrollListener(new AbsListView.OnScrollListener() {



            @Override
            public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {

            }

            @Override
            public void onScrollStateChanged(AbsListView view, int scrollState) {

//                Log.e("a0","a " + mConnectionList.getLastVisiblePosition());
//                if(mConnectionList.getLastVisiblePosition() == connectionList.size()-1 ){
                    getConnections();
                }


            }
        });

`ACTION_UP` and `ACTION_DOWN` means the fingers pressing and lifting from the screen not from scrolling — MetaSnarf, Feb 04 '19 at 07:33
@tompok what happens when you are using setOnScrollListener is your onScrollStateChanged being executed or not? — Brijesh Joshi, Feb 04 '19 at 07:55
Try to put getConnections() method in onScroll method and put some logs over there and check if it onScroll method and your method is being executed or not ? — Bhavnik, Feb 04 '19 at 09:59

Dhananjay Waghela · Answer 1 · 2019-02-04T07:49:10.217

0

Try this method for scroll down listview and select the last row so it will scroll into view.

 private void scrollListBottom() {
        myListView.post(new Runnable() {
            @Override
            public void run() {
                listView.setSelection(listAdapter.getCount() - 1);
            }
        });
    }

myListView.setOnTouchListener(new OnTouchListener() 
  @Override
    public boolean onTouch(View v, MotionEvent event) {
     v.getParent().requestDisallowInterceptTouchEvent(true);
     return false;
}

});

edited Feb 04 '19 at 07:49

answered Feb 04 '19 at 07:42

Dhananjay Waghela

168
1
11

But I don't want to scroll down list , I want to notice when user scroll down – tompok Feb 04 '19 at 07:45

score 0 · Answer 2 · answered Feb 04 '19 at 08:00

0

you shuld try like this.

scrollView.setOnScrollChangeListener(new NestedScrollView.OnScrollChangeListener() {
    @Override
    public void onScrollChange(NestedScrollView v, int scrollX, int scrollY, int oldScrollX, int oldScrollY) {                  
        if (scrollY > oldScrollY) {
            Log.e("SCROLL", "Scroll DOWN"+scrollY);
        }
        if (scrollY < oldScrollY) {
            Log.e("SCROLL", "Scroll UP"+scrollY);
        }
        if (scrollY == 0) {
            Log.e("SCROLL", "TOP SCROLL"+scrollY);
        }
        if (scrollY == (v.getChildAt(0).getMeasuredHeight() - v.getMeasuredHeight())) {
            Log.e("SCROLL", "BOTTOM SCROLL"+scrollY);
        }
    }
});

using this you can detect your scrolling direction and then update your list hope this will help you.

answered Feb 04 '19 at 08:00

Vishnu Saini

129
5

But I have listView not scrollView – tompok Feb 04 '19 at 08:01
you can put your listview inside scroll view. – Vishnu Saini Feb 04 '19 at 08:10
you can see here solution of your problem -https://stackoverflow.com/questions/16791100/detect-scroll-up-scroll-down-in-listview. – Vishnu Saini Feb 04 '19 at 08:14
so what i should ot do ? – tompok Feb 04 '19 at 08:23

Android Update ListView on scrolling down

2 Answers2