Android可扩展列表:具有不同布局的组

Question

我想为每个组显示不同的子布局,如:

@Override
        public View getChildView(int groupPosition, int childPosition,
                boolean isLastChild, View convertView, ViewGroup parent) {

            if (convertView == null) {

                switch (groupPosition){

                case 0:
                    LayoutInflater inflater =  (LayoutInflater) myContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
                    convertView = inflater.inflate(R.layout.child_row, null);
                    TextView tvPlayerName = (TextView) convertView.findViewById(R.id.tvPlayerName);
                    tvPlayerName.setText(arrChildelements[groupPosition][childPosition]);
                    break;

                case 1:
                    LayoutInflater inflater1 =  (LayoutInflater) myContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
                    convertView = inflater1.inflate(R.layout.child_row1, null);
                    TextView tvPlayerName1 = (TextView) convertView.findViewById(R.id.tvPlayerName);
                    tvPlayerName1.setText(arrChildelements[groupPosition][childPosition]);
                    break; 

                case 2:
                    LayoutInflater inflater2 =  (LayoutInflater) myContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
                    convertView = inflater2.inflate(R.layout.child_row2, null);
                    TextView tvPlayerName2 = (TextView) convertView.findViewById(R.id.tvPlayerName);
                    tvPlayerName2.setText(arrChildelements[groupPosition][childPosition]);
                    break;

                case 3:             
                    LayoutInflater inflater3 =  (LayoutInflater) myContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
                    convertView = inflater3.inflate(R.layout.child_row3, null);
                    TextView tvPlayerName3 = (TextView) convertView.findViewById(R.id.tvPlayerName);
                    tvPlayerName3.setText(arrChildelements[groupPosition][childPosition]);
                    break;

                }


            } return convertView;
    }

我的问题是在点击组时,子列表在组之间相互交换.

任何人都可以告诉我,我做错了什么？

Answer 1

这是因为

if (convertView == null)

删除它,它应该工作正常,如果它删除这个if语句后应该工作,返回它并在if(convertView == null)内添加if语句,使它显示为你想要它,因为删除if(convertView == null)会使滚动速度变慢并使用更多的ram.

例如,您可以将所有视图放在一个xml文件或一个视图中,然后在switch方法中使用setVisibility来显示适合当前列表项的布局部分.