1.通过JAVA代码添加,资源文件基本上不修改
XML文件,只添加了一个ListView,就不贴XML文件的代码了。
java代码:
public class MainActivity extends Activity { @Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main); ScaleAnimation sa=new ScaleAnimation(0, 1, 0, 1);
sa.setDuration(1000);
LayoutAnimationController lac=new LayoutAnimationController(sa, 0.5f);
lac.setOrder(LayoutAnimationController.ORDER_REVERSE); ListView lv=(ListView) findViewById(R.id.lv);
ArrayAdapter<String> adapter=new ArrayAdapter<String>(getApplicationContext(), android.R.layout.simple_list_item_1,new String[]{"北京","西安","上海","南京"});
lv.setAdapter(adapter);
lv.setLayoutAnimation(lac);
}
}
2.通过资源文件添加动画效果
新建一个Android XML fils,在新建页面,Resource Type选择为Tween Animation,Root element选择为alpha。(也可以设置多个动画效果一起)
scale_anim.xml
<?xml version="1.0" encoding="utf-8"?>
<scale xmlns:android="http://schemas.android.com/apk/res/android"
android:fromXScale="0"
android:toXScale="1"
android:fromYScale="0"
android:toYScale="1"
android:duration="1000">
</scale>
新建一个Android XML fils
listview_anim.xml
<?xml version="1.0" encoding="utf-8"?>
<layoutAnimation xmlns:android="http://schemas.android.com/apk/res/android"
android:animation="@anim/scale_anim"
android:delay="0.5">
</layoutAnimation>
在main-activity.xml文件中,设置listview的属性
<ListView android:id="@+id/lv"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layoutAnimation="@anim/listview_anim"></ListView>