快速处理ListView为空的情况

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

  <ListView
    android:id="@+id/empty_listview_lv"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />
  <ImageView
    android:id="@+id/empty_imageview_iv"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:src="@drawable/bg"
    android:visibility="gone"/>
</FrameLayout>

public class EmptyListViewActivity extends Activity {


  private ListView empty_listview_lv;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.empty_listview_layout);
    empty_listview_lv = (ListView) findViewById(R.id.empty_listview_lv);
    String[] mListStr = {"1","2","3","3","4"};
    empty_listview_lv.setAdapter(new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1, mListStr));
    empty_listview_lv.setEmptyView(findViewById(R.id.empty_imageview_iv));
  }
}