android tween动画效果

anim文件夹下

 1 <?xml version="1.0" encoding="utf-8"?> 2 <set xmlns:android="http://schemas.android.com/apk/res/android" 3     android:shareInterpolator="false" > 4  5     <alpha 6         android:duration="1000" 7         android:fromAlpha="1" 8         android:repeatCount="infinite" 9         android:repeatMode="reverse"10         android:toAlpha="0" />11 12 </set>

View Code

 1 package com.itheima.tween; 2  3 import android.app.Activity; 4 import android.os.Bundle; 5 import android.view.View; 6 import android.view.animation.Animation; 7 import android.view.animation.AnimationUtils; 8 import android.widget.ImageView; 9 10 public class MainActivity extends Activity {11 12     private ImageView imageView;13 14     @Override15     protected void onCreate(Bundle savedInstanceState) {16         super.onCreate(savedInstanceState);17         setContentView(R.layout.activity_main);18         imageView = (ImageView) findViewById(R.id.imageView);19     }20 21     public void alpha(View v) {22         Animation anim = AnimationUtils.loadAnimation(this, R.anim.alpha);    // 加载XML定义动画特效23 //        anim.setFillAfter(true);            // 保持结束时的画面24         imageView.startAnimation(anim);        // 应用动画特效25     }26     27     public void scale(View v) {28         Animation anim = AnimationUtils.loadAnimation(this, R.anim.scale);29         imageView.startAnimation(anim);    30     }31     32     public void rotate(View v) {33         Animation anim = AnimationUtils.loadAnimation(this, R.anim.rotate);34         imageView.startAnimation(anim);    35     }36     37     public void translate(View v) {38         Animation anim = AnimationUtils.loadAnimation(this, R.anim.translate);39         imageView.startAnimation(anim);    40     }41     42     public void combo(View v) {43         Animation anim = AnimationUtils.loadAnimation(this, R.anim.combo);44         imageView.startAnimation(anim);    45     }46 47 }

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