Android 之ListView+Imagview设计实现单选

public class EntityInfo {
private String name;
//用来判断当前item是否被选中
private boolean isChick;

public  EntityInfo(String name,boolean isChick){
this.name=name;
this.isChick=isChick;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public boolean isChick() {
return isChick;
}

public void setChick(boolean chick) {
isChick = chick;
}
}

class  RadioButtonAdapter extends BaseAdapter{
private Context context;
private List<EntityInfo> listinfos;
private LayoutInflater inflater;
public RadioButtonAdapter(Context context,List<EntityInfo> listinfos){
this.context=context;
this.listinfos=listinfos;
inflater =LayoutInflater.from(context);
}

@Override
public int getCount() {
return listinfos.size();
}

@Override
public Object getItem(int position) {
return listinfos.get(position);
}

@Override
public long getItemId(int position) {
return position;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {

convertView= inflater.inflate(R.layout.listview_item,null);

TextView name= (TextView) convertView.findViewById(R.id.tv_name);

ImageView image2= (ImageView) convertView.findViewById(R.id.iv_image2);

//
EntityInfo info=  listinfos.get(position);

name.setText(info.getName());
if(info.isChick()){
image2.setVisibility(View.VISIBLE);
}else {
image2.setVisibility(View.GONE);
}

return convertView;
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">

<RelativeLayout

android:layout_width="match_parent"
android:layout_height="30dp">

<TextView
android:id="@+id/tv_name"
android:layout_centerVertical="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="20dp"
android:text="nnsdf"/>

<FrameLayout
android:layout_centerVertical="true"
android:layout_marginRight="10dp"
android:layout_alignParentRight="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content">

<ImageView

android:id="@+id/tv_image1"
android:layout_width="20dp"
android:layout_height="20dp"
android:src="@mipmap/chick"/>

<ImageView
android:id="@+id/iv_image2"
android:layout_width="20dp"
android:layout_height="20dp"
android:src="@mipmap/ischick"/>
</FrameLayout>

</RelativeLayout>

</LinearLayout>

public class MainActivity extends Activity {
private ListView lv;
List<EntityInfo>  listinfos=new ArrayList<EntityInfo>();
private  RadioButtonAdapter madapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//默认第一个选中（看需求）
listinfos.add(new EntityInfo("第一个",true));
listinfos.add(new EntityInfo("第二个",false));
listinfos.add(new EntityInfo("第三个",false));
listinfos.add(new EntityInfo("第四个",false));

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

madapter=new RadioButtonAdapter(MainActivity.this,listinfos);
lv.setAdapter(madapter);

lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

EntityInfo info= (EntityInfo) madapter.getItem(position);
Toast.makeText(MainActivity.this,info.getName(),Toast.LENGTH_LONG).show();
//核心代码 很简单的逻辑
for (EntityInfo infos : listinfos){
//拿到集合里面的item和当前点击item做比教
if(infos.getName().equals(info.getName())){
infos.setChick(true);
}else {
infos.setChick(false);
}
}

//不能少 切记
madapter.notifyDataSetChanged();

}
});
}
｝