ListView Animation

简单介绍一下4种动画效果方式

AnimationSet set = new AnimationSet(false);
Animation animation = new AlphaAnimation(0,1);   //AlphaAnimation 控制渐变透明的动画效果
animation.setDuration(500);     //动画时间毫秒数
set.addAnimation(animation);    //加入动画集合  

animation = new TranslateAnimation(1, 13, 10, 50);  //ScaleAnimation 控制尺寸伸缩的动画效果
animation.setDuration(300);
set.addAnimation(animation);  

animation = new RotateAnimation(30,10);    //TranslateAnimation  控制画面平移的动画效果
animation.setDuration(300);
set.addAnimation(animation);  

animation = new ScaleAnimation(5,0,2,0);    //RotateAnimation  控制画面角度变化的动画效果
animation.setDuration(300);
set.addAnimation(animation);  

LayoutAnimationController controller = new LayoutAnimationController(set, 1);  

GridView gridView = (GridView) this.findViewById(R.id.gridview);
gridView .setLayoutAnimation(controller);  //GridView 设置动画效果  

ListView listview= (ListView)this.findViewById(R.id.listview);
listview.setLayoutAnimation(controller);   //ListView 设置动画效果  

nim文件夹下建立anim_layout.xml和alpha.xml

android:animationOrder 的取值有normal 0 默认reverse 1 倒序random 2 随机

anim_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<layoutAnimation xmlns:android="http://schemas.android.com/apk/res/android"
 android:delay="0.5"
 android:animationOrder="random"
 android:animation="@anim/alpha"
 />  

alpha.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
        android:interpolator="@android:anim/accelerate_interpolator">
    <alpha
        android:fromAlpha="0.0"
        android:toAlpha="1.0"
        android:duration="500" />
</set>  

布局文件里的ListView增加一个layoutAnimation属性

<?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="vertical" >  

    <ListView
        android:id="@id/android:list"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:drawSelectorOnTop="false"
        android:layoutAnimation="@anim/anim_layout"
        ></ListView>  

    <TextView
        android:id="@id/android:empty"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:text="No data" />  

</LinearLayout>