tweenanim动画

1、视图

 <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>

2、android代码

 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);
     }

 }