小编Dar*_*gLi的帖子

我创建以下代码:

 mListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> parent, View v, int position,
                long id) {

            for (int i = 0; i < mListView.getCount(); i++) {
                View callLogView = mListView.getChildAt(i);   
                mRelativeLayout = (LinearLayout)callLogView.findViewById(R.id.myShow);
                if(i == position){
                    if(mRelativeLayout.getVisibility() == View.GONE){
                        mRelativeLayout.setVisibility(View.VISIBLE);
                    }
                    else{
                        mRelativeLayout.setVisibility(View.GONE);
                    }
                }else{
                    mRelativeLayout.setVisibility(View.GONE);
                }
            }

        }
    });

我想实现一个函数,比如当我点击一个项目时Listview,它会显示一个视图,而Listview的其他项目将被隐藏.但是mListView.getChildAt(i)超过后会有空指针mListView.getChildCount().

怎么解决这个？提前致谢!