【Android学习】Android动画效果--Animations（3）

LayoutAnimationController：

1、LayoutAnimationController用于为一个Layout里面的控件，或者是一个ViewGroup里面的控件设置动画效果

2、每个控件都有相同的动画效果

3、这些控件的动画效果在不同的时间显示出来

4、LayoutAnimationController可以在XML文件中设置，也可以在代码中设置

------>在XML当中使用LayoutAnimationController

1、在res/anim文件夹中创建一个新文件，名为list_anim_layout.xml：

<?xml version="1.0" encoding="utf-8"?>
<layoutAnimation xmlns:android="http://schemas.android.com/apk/res/android"
	android:delay="2"
	android:animationOrder="normal" 
	android:animation="@anim/list_anim" />

android:layoutAnimation="@anim/list_anim_layout"

1、创建一个Animation对象

2、使用如下代码创建LayoutAnimationController对象：

LayoutAnimationController lac = new LayoutAnimationController(animation);

lac.setOrder(LayoutAnimationController.ORDER_NORMAL);

listView.setLayoutAnimation(lac);

MainActivity.java:

public class MainActivity extends ListActivity {
	private Button button = null;
	private ListView listView = null;
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		listView = getListView();
		button = (Button)findViewById(R.id.buttonId);
		button.setOnClickListener(new ButtonListener());
	}

	private ListAdapter buildListAdapter() {
		List<HashMap<String, String>> list = new ArrayList<HashMap<String, String>>();
		HashMap<String, String> m1 = new HashMap<String, String>();
		m1.put("user_name", "张三");
		m1.put("user_gender", "女");

		HashMap<String, String> m2 = new HashMap<String, String>();
		m2.put("user_name", "李四");
		m2.put("user_gender", "女");

		HashMap<String, String> m3 = new HashMap<String, String>();
		m3.put("user_name", "王五");
		m3.put("user_gender", "男");

		list.add(m1);
		list.add(m2);
		list.add(m3);

		SimpleAdapter simpleAdapter = new SimpleAdapter(this, list,
				R.layout.item, new String[] { "user_name", "user_gender" },
				new int[] { R.id.user_name, R.id.user_gender });
		return simpleAdapter;
	}
	
	private class ButtonListener implements OnClickListener{

		@Override
		public void onClick(View v) {
			listView.setAdapter(buildListAdapter());
			
			Animation animation = (Animation)AnimationUtils.loadAnimation(MainActivity.this, R.anim.list_anim);
			LayoutAnimationController lac = new LayoutAnimationController(animation);
			lac.setOrder(LayoutAnimationController.ORDER_NORMAL);
			lac.setDelay(0.5f);
			listView.setLayoutAnimation(lac);
		}
		
	}
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
	<ListView
		android:id="@id/android:list"
		android:layout_width="fill_parent"
		android:layout_height="wrap_content"
		android:scrollbars="vertical"
		/>
	<Button
		android:id="@+id/buttonId"
		android:layout_width="fill_parent"
		android:layout_height="wrap_content"
		android:text="测试"
		/>
</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
	android:interpolator="@android:anim/accelerate_interpolator"
	android:shareInterpolator="true">
		
	<alpha 
		android:fromAlpha="0.0"
		android:toAlpha="1.0"
		android:duration="2000" />


</set>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
	android:layout_width="fill_parent" 
	android:layout_height="fill_parent"
	android:orientation="horizontal" 
	android:paddingLeft="10dip"
	android:paddingRight="10dip" 
	android:paddingTop="1dip"
	android:paddingBottom="1dip">
	<TextView android:id="@+id/user_name" 
	    android:layout_width="180dip"
		android:layout_height="30dip" 
		android:textSize="5pt"
		android:singleLine="true" />
	<TextView android:id="@+id/user_gender" 
	    android:layout_width="fill_parent"
		android:layout_height="fill_parent" 
		android:textSize="5pt" 
		android:singleLine="true"/>
</LinearLayout>

【Android学习】Android动画效果--Animations（3）,,5-wow.com