gridview模仿radiobutton的单选

来源：互联网发布：codeblocks中文版mac 编辑：程序博客网时间：2024/05/16 05:41

1.首先 int flag = -1；让其来表示，当前被选中的item，int flag2 = -1；来表示上一个被选中的item。

那么我们就需要考虑两种情况了：（1）flag = flag2（2）flag！=flag2；太罗嗦了还是直接上代码吧

class TypeAdapter extends BaseAdapter {
       private int flag;
       private ArrayList<String> arrayList;
       //记录被选中item的位置
       private int pn = -1;
       private int ppn = -1;
       public TypeAdapter(ArrayList<String> arrayList,int flag) {
           this.arrayList = arrayList;
           this.flag = flag;
       }

       @Override
       public int getCount() {
           // TODO Auto-generated method stub
           return arrayList.size();
       }

       @Override
       public Object getItem(int position) {
           // TODO Auto-generated method stub
           return null;
       }

       @Override
       public long getItemId(int position) {
           // TODO Auto-generated method stub
           return 0;
       }

       @Override
       public View getView(int position, View convertView, ViewGroup parent) {
           View view = View.inflate(FilmFindPageActivity.this, R.layout.gridview_adapter, null);
           TextView tv = (TextView) view.findViewById(R.id.gridview_adapter_tv);
           tv.setText(arrayList.get(position));
           tv.setTag(position);
           if(ppn == position){
               tv.setBackgroundResource(0);
           }
           if(pn == position){
               tv.setBackgroundResource(R.drawable.back_image);
           }
           if(pn == ppn){
               tv.setBackgroundResource(0);
           }
           tv.setOnClickListener(new OnClickListener() {

               @Override
               public void onClick(View v) {
                   TextView tv = (TextView) v;
                   int i = (Integer) tv.getTag();
                   if(pn!=i){
                       ppn = pn;
                       pn = i;
                   }else {
                       ppn = pn;
                   }
                   switch (flag) {
                   case 1:
                       selectStrs[0]=tv.getText().toString();
                       break;
                   case 2:
                       selectStrs[1]=tv.getText().toString();
                       break;
                   case 3:
                       selectStrs[2]=tv.getText().toString();
                       break;
                   }
                   notifyDataSetChanged();
               }
           });
           return view;
       }
   }

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