滑动多选项目gridview android

Question

我有代码mutil选择项目gridview在android中滑动时，但是当我滑动对角线时它篡改其他项目。当我向中心单元格滑动时，我想要检查。但我不能。请帮我。 screen here

gridWordTable.setAdapter(adapter);
    gridWordTable.setChoiceMode(GridView.CHOICE_MODE_MULTIPLE_MODAL);
    gridWordTable.setOnTouchListener(new View.OnTouchListener() {
        @Override
        public boolean onTouch(View view, MotionEvent motionEvent) {
            int i = gridWordTable.pointToPosition((int) motionEvent.getX(), (int) motionEvent.getY());
            if (i >= 0 && i < listCharater.length * listCharater.length) {
                if (motionEvent.getAction() == MotionEvent.ACTION_DOWN) {
                    adapter.notifyDataSetChanged();
                }
                if (motionEvent.getAction() == MotionEvent.ACTION_MOVE) {
                    gridWordTable.getChildAt(i).setBackground(getResources().getDrawable(R.drawable.border_selected));
                }
            }
            return true;
        }
    });
    gridWordTable.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
        @Override
        public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {
            view.setSelected(true);
        }

        @Override
        public void onNothingSelected(AdapterView<?> adapterView) {

        }
    });