Android xml实现animation的4种动画效果实例代码

<?xml version="1.0" encoding="UTF-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:interpolator="@android:anim/accelerate_interpolator">
<!-- 渐变透明的动画效果 -->
<!--fromAlpha 动画起始透明的 1.0完全不透明
toAlpha 动画结束时透明的 0.0完全透明
startOffset 设置启动时间
duration 属性动画持续时间
-->
<alpha 
android:fromAlpha="1.0"
android:toAlpha="0.0"
android:startOffset="500"
android:duration="5000"
/>
</set>

<?xml version="1.0" encoding="UTF-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:interpolator="@android:anim/accelerate_interpolator">
<!-- 画面转移旋转动画效果 -->
<!--
fromDegrees开始角度
toDegrees结束角度
pivotX设置旋转时的X轴坐标
-->
<rotate 
android:fromDegrees="0"
android:toDegrees="+360"
android:pivotX="50%"
android:pivotY="50%"
android:duration="5000"
/>
</set>

<?xml version="1.0" encoding="UTF-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:interpolator="@android:anim/accelerate_interpolator">
<!-- 渐变尺寸伸缩动画效果 -->
<!--
fromXScale 起始x轴坐标
toXScale 止x轴坐标
fromYScale 起始y轴坐标
toYScale 止y轴坐标
pivotX 设置旋转时的X轴坐标
pivotY 设置旋转时的Y轴坐标
duration 持续时间
-->
<scale 
android:fromXScale="1.0"
android:toXScale="0.0"
android:fromYScale="1.0"
android:toYScale="0.0"
android:pivotX="50%"
android:pivotY="50%"
android:duration="5000"
/>
</set>

<?xml version="1.0" encoding="UTF-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:interpolator="@android:anim/accelerate_interpolator">
<!-- 画面转移位置移动动画效果 -->
<translate 
android:fromXDelta="0%"
android:toXDelta="100%"
android:fromYDelta="0%"
android:toYDelta="0%"
android:duration="5000" 
/>
</set>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<ImageView 
android:id="@+id/image1"
android:layout_width="match_parent"
android:layout_height="200px"
/>
<ImageView 
android:id="@+id/image2"
android:layout_width="match_parent"
android:layout_height="200px"
/>
<ImageView 
android:id="@+id/image3"
android:layout_width="match_parent"
android:layout_height="200px"
/>
<ImageView 
android:id="@+id/image4"
android:layout_width="match_parent"
android:layout_height="200px"
/>
</LinearLayout>

public class AnimationDemo extends Activity{
private Animation animation,animation1,animation2,animation3;
private ImageView image1,image2,image3,image4;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.animation);
initView();
}
public void initView()
{
animation=AnimationUtils.loadAnimation(AnimationDemo.this, R.anim.rotate);
animation1=AnimationUtils.loadAnimation(AnimationDemo.this, R.anim.scale);
animation2=AnimationUtils.loadAnimation(AnimationDemo.this, R.anim.alpha);
animation3=AnimationUtils.loadAnimation(AnimationDemo.this, R.anim.translate);
image1=(ImageView)findViewById(R.id.image1);
image1.setImageResource(R.drawable.jpeg);
image2=(ImageView)findViewById(R.id.image2);
image2.setImageResource(R.drawable.jpg);
image3=(ImageView)findViewById(R.id.image3);
image3.setImageResource(R.drawable.png);
image4=(ImageView)findViewById(R.id.image4);
image4.setImageResource(R.drawable.gif);
image1.startAnimation(animation);
image2.startAnimation(animation1);
image3.startAnimation(animation2);
image4.startAnimation(animation3);
}
}