50个Android开发技巧(24 处理ListView数据为空的情况)

 <FrameLayout xmlns:android = "http://schemas.android.com/apk/res/android"
    android:layout_width= "fill_parent"
    android:layout_height= "fill_parent"
    android:orientation= "vertical" >

    <ListView
        android:id ="@+id/my_list_view"
        android:layout_width ="fill_parent"
        android:layout_height ="fill_parent" />

    <ImageView
        android:id ="@+id/empty_view"
        android:layout_width ="fill_parent"
        android:layout_height ="fill_parent"
        android:src ="@drawable/empty_view" />

</FrameLayout>

<shape xmlns:android = "http://schemas.android.com/apk/res/android"
    android:shape= "rectangle" >
    <solid android:color= "#AA00FF00" />
</shape>

public class MainActivity extends Activity {

  private ListView mListView;

  @Override
  public void onCreate (Bundle savedInstanceState ) {
    super. onCreate( savedInstanceState );
    setContentView (R .layout .main );

    mListView = (ListView ) findViewById (R .id .my_list_view );
    mListView. setEmptyView (findViewById (R .id .empty_view ));
    /*String[] strs=new String[]{"1","2"};
    ArrayAdapter<String> adapter=new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1,strs);
    mListView.setAdapter(adapter);*/
   
  }

}