Animation使用方法(一)
这里要使用到LayoutAnimationController。这个类可以用在一个布局文件中的layout内，对该layout内部的控件进行控制，也可以用在Java代码中，实现同样的效果。
效果图：三个item逐个显现。
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工程结构图：
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main.xml
<?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:layout_height="wrap_content"android:layout_width="fill_parent"android:id="@id/android:list"android:layoutAnimation="@anim/list_controller"/></LinearLayout>
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="horizontal" android:padding="10dp" android:layout_width="fill_parent" android:layout_height="fill_parent" > <ImageView android:id="@+id/image"android:layout_width="wrap_content"android:layout_height="wrap_content"/> <TextView android:id="@+id/name" android:layout_width="180dp" android:layout_height="30dp" android:layout_marginLeft="20dp" android:textColor="#fff" android:textSize="10pt"android:singleLine="true" /><TextView android:id="@+id/age"android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_marginRight="10dp" android:textColor="#fff" android:gravity="right" android:textSize="10pt"/></LinearLayout>
<?xml version="1.0" encoding="UTF-8"?><set xmlns:android="http://schemas.android.com/apk/res/android"android:interpolator="@android:anim/accelerate_interpolator"><alphaandroid:fromAlpha="0.0"android:toAlpha="1.0"android:duration="2000"></alpha></set>
<?xml version="1.0" encoding="UTF-8"?><layoutAnimation xmlns:android="http://schemas.android.com/apk/res/android"android:delay="0.5"android:animationOrder="normal"android:animation="@anim/alpha"/>
package cxt.demo;import java.util.ArrayList;import java.util.HashMap;import android.app.ListActivity;import android.os.Bundle;import android.widget.SimpleAdapter;public class AnimationDemo3Activity extends ListActivity {private ArrayList<HashMap<String,Object>> list = null; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); list = new ArrayList<HashMap<String,Object>>(); HashMap<String,Object> m1 = new HashMap<String, Object>(); HashMap<String,Object> m2 = new HashMap<String, Object>(); HashMap<String,Object> m3 = new HashMap<String, Object>(); m1.put("image", R.drawable.z11); m1.put("name", "Jack"); m1.put("age","63"); m2.put("image", R.drawable.z22); m2.put("name", "Bob"); m2.put("age","15"); m3.put("image", R.drawable.z33); m3.put("name", "Theron"); m3.put("age","25"); list.add(m1); list.add(m2); list.add(m3); SimpleAdapter adapter = new SimpleAdapter(this, list, R.layout.user, new String[]{"image","name","age"}, new int[]{R.id.image,R.id.name,R.id.age}); setListAdapter(adapter); } }