HackSix 为ViewGroup的子视图添加悦目的动画效果

 1 public class MainActivity extends Activity {
 2     private ListView mListView;
 3     @Override
 4     protected void onCreate(Bundle savedInstanceState) {
 5         super.onCreate(savedInstanceState);
 6         setContentView(R.layout.activity_main);
 7         mListView = (ListView) findViewById(R.id.listView);
 8         mListView.setAdapter(new ArrayAdapter<String>(this,
 9                 android.R.layout.simple_list_item_1, Countries.COUNTRIES));
10         AnimationSet set = new AnimationSet(true);
11         Animation alpha = new AlphaAnimation(0.0f, 1.0f);
12         alpha.setDuration(2000);
13         Animation translate = new TranslateAnimation(
14                 Animation.RELATIVE_TO_SELF, 0.0f, Animation.RELATIVE_TO_SELF,
15                 0.0f, Animation.RELATIVE_TO_SELF, -1.0f,
16                 Animation.RELATIVE_TO_SELF, 0.0f);
17         translate.setDuration(1000);
18         set.addAnimation(alpha);
19         set.addAnimation(translate);
20         LayoutAnimationController controller = new LayoutAnimationController(
21                 set);
22         mListView.setLayoutAnimation(controller);
23     }
24 }  

 1 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 2     xmlns:tools="http://schemas.android.com/tools"
 3     android:layout_width="match_parent"
 4     android:layout_height="match_parent"
 5     android:orientation="vertical"
 6     tools:context=".MainActivity" >
 7 
 8     <ListView
 9         android:id="@+id/listView"
10         android:layout_width="match_parent"
11         android:layout_height="match_parent" >
12     </ListView>
13 
14 </LinearLayout>