tweenanim动画

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity" >

<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="click1"
android:text="透明"
/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="click2"
android:text="缩放"
/>

<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="click3"
android:text="旋转"
/>

<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="click4"
android:text="平移"
/>

<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="click5"
android:text="组合"
/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
>
<ImageView
android:id="@+id/iv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/ic_launcher"
/>
</LinearLayout>

</LinearLayout>

package com.example.tweenanim;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.view.animation.AlphaAnimation;
import android.view.animation.Animation;
import android.view.animation.AnimationSet;
import android.view.animation.RotateAnimation;
import android.view.animation.ScaleAnimation;
import android.view.animation.TranslateAnimation;
import android.widget.ImageView;

public class MainActivity extends Activity {
private ImageView iv;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
iv = (ImageView) findViewById(R.id.iv);
}

//透明度
public void click1(View view){
//第一个参数表示开始透明度;0表示完全透明
//第二个参数表示结束透明度;1表示完全不透明
AlphaAnimation animation = new AlphaAnimation(0.0f, 1.0f);
animation.setDuration(2000);//设置动画时间为2妙
animation.setRepeatCount(2);//设置重复次数，因此总共3次
animation.setRepeatMode(Animation.REVERSE);//设置重复模式
iv.startAnimation(animation);
}

//缩放图片
public void click2(View view){
//第一个参数为开始x轴缩放坐标;第二个参数为结束时x轴缩放坐标
//第三个参数为开始y轴缩放坐标;第四个参数为结束时y轴缩放坐标
//第五个参数为中心x坐标以什么为参照,Animation.RELATIVE_TO_SELF说明以自己为参照;第六个参数为参照坐标比例;第七、八与第五、六相同,只不过它指的是y轴
ScaleAnimation animation = new ScaleAnimation(0.2f, 2.0f, 0.2f, 2.0f, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
animation.setDuration(2000);
animation.setRepeatCount(2);
animation.setRepeatMode(Animation.REVERSE);
iv.startAnimation(animation);
}

//旋转
public void click3(View view){
//第一参数，开始旋转角度
//第二个参数为旋转到多少度
//第3-6个参数与缩放的第5-8的参数相同
RotateAnimation animation = new RotateAnimation(0, 360, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
animation.setDuration(2000);
animation.setRepeatCount(2);
animation.setRepeatMode(Animation.REVERSE);
iv.startAnimation(animation);
}

//平移
public void click4(View view){
//x轴
//第一个参数为参照类型:Animation.RELATIVE_TO_PARENT以父窗口为参照
//第二个参数为开始坐标比例
//第三个同第一个；第四个参数是说明要平移多长的比例;1.0说明要有父窗口的宽度

//y轴同上

TranslateAnimation animation = new TranslateAnimation(Animation.RELATIVE_TO_PARENT, 0.0f, Animation.RELATIVE_TO_PARENT, 1.0f, Animation.RELATIVE_TO_PARENT, 0.0f, Animation.RELATIVE_TO_PARENT, 1.0f);
animation.setDuration(2000);
animation.setRepeatCount(2);
animation.setRepeatMode(Animation.REVERSE);
iv.startAnimation(animation);
}

//组合动画
public void click5(View view){
AnimationSet set = new AnimationSet(false);

TranslateAnimation ta = new TranslateAnimation(Animation.RELATIVE_TO_PARENT, 0.0f, Animation.RELATIVE_TO_PARENT, 1.0f, Animation.RELATIVE_TO_PARENT, 0.0f, Animation.RELATIVE_TO_PARENT, 1.0f);
ta.setDuration(2000);
ta.setRepeatCount(2);
ta.setRepeatMode(Animation.REVERSE);

RotateAnimation ra = new RotateAnimation(0, 360, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
ra.setDuration(2000);
ra.setRepeatCount(2);
ra.setRepeatMode(Animation.REVERSE);

ScaleAnimation sa = new ScaleAnimation(0.2f, 2.0f, 0.2f, 2.0f, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
sa.setDuration(2000);
sa.setRepeatCount(2);
sa.setRepeatMode(Animation.REVERSE);

set.addAnimation(ta);
set.addAnimation(ra);
set.addAnimation(sa);
iv.startAnimation(set);
}

}