listView单选实现（二）

上一篇知道可以使用android自带的listview的chiocemode的单选模式实现。但那个布局是系统自带的checkedTextView，有时候我们需要自己实现布局，那么下面我们开始实现

自定义组合布局，实现checkable接口。

public class SingleView extends LinearLayout implements Checkable {

     private TextView mText;
     private CheckBox mCheckBox;
     public SingleView(Context context, AttributeSet attrs, int defStyle) {
            super(context, attrs, defStyle);
           initView(context);
     }

     public SingleView(Context context, AttributeSet attrs) {
            super(context, attrs);
           initView(context);
     }

     public SingleView (Context context) {
            super(context);
           initView(context);
     }

     private void initView(Context context){
            // 填充布局
           LayoutInflater inflater = LayoutInflater.from(context);
           View v = inflater.inflate(R.layout.item_single_layout , this, true);
            mText = (TextView) v.findViewById(R.id. title);
            mCheckBox = (CheckBox) v.findViewById(R.id. checkbox);
     }

     @Override
     public void setChecked( boolean checked) {
            mCheckBox.setChecked(checked);
           
     }

     @Override
     public boolean isChecked() {
            return mCheckBox.isChecked();
     }

     @Override
     public void toggle() {
            mCheckBox.toggle();
     }
     
     public void setTitle(String text){
            mText.setText(text);
     }
}

activity中试下代码：

public class MainActivity extends Activity {
     private ArrayList groups;
     private ListView listView;

     @Override
     protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
           setContentView(R.layout. activity_main);

            listView = (ListView) findViewById(R.id. listView);

            groups = new ArrayList();
            groups.add( "11");
            groups.add( "22");
            groups.add( "33");
            groups.add( "44");
            groups.add( "55");
            groups.add( "66");
            groups.add( "77");
            groups.add( "88");
            groups.add( "99");
            groups.add( "00");

           SingleAdapter singleAdapter = new SingleAdapter();
            listView.setAdapter(singleAdapter);

           Button button = (Button) findViewById(R.id. button);
           button.setOnClickListener( new OnClickListener() {

                 @Override
                 public void onClick(View v) {
                     PickNum();
                }
           });
     }

     private void PickNum() {
            int position = listView.getCheckedItemPosition();
            if (ListView. INVALID_POSITION != position) {
                Toast. makeText(MainActivity.this, groups.get(position), 0).show();
           }
     }

     private class SingleAdapter extends BaseAdapter {

            @Override
            public int getCount() {
                 return groups.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( final int position, View convertView,
                     ViewGroup parent) {
                 final SingleView singleView = new SingleView(MainActivity.this );
                singleView.setTitle( groups.get(position));
                 return singleView;

           }

     }
}

效果：

如果要替换默认checkbox的图标显示，设置checkbox的button属性即可。

附件：

http://download.csdn.net/detail/knxw0001/7961143