Android实现页面滑动切换动画

<?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" > 
   
  <!--ViewFlipper里面的子控件可以被看成一页--> 
  <ViewFlipper  
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:id="@+id/viewFlipper" 
    > 
    <!-- 第一页 --> 
    <LinearLayout 
      android:layout_width="fill_parent" 
      android:layout_height="fill_parent"  
      android:background="#339900"  
      > 
      <TextView  
        android:layout_width="wrap_content" 
      android:layout_height="fill_parent" 
      android:text="第一页"  
        /> 
    </LinearLayout> 
     
    <!-- 第二页 --> 
    <LinearLayout 
      android:layout_width="fill_parent" 
      android:layout_height="fill_parent"  
      > 
    <TextView  
        android:layout_width="wrap_content" 
      android:layout_height="fill_parent" 
      android:text="第二页"  
        /> 
    </LinearLayout> 
     
  </ViewFlipper> 
 
 
</LinearLayout> 

package com.example.activitymove; 
 
import android.app.Activity; 
import android.content.Intent; 
import android.os.Bundle; 
import android.view.MotionEvent; 
import android.view.View; 
import android.view.animation.Animation; 
import android.view.animation.AnimationUtils; 
import android.widget.ViewFlipper; 
 
 
public class MainActivity extends Activity { 
 
 
  private ViewFlipper viewFlipper; 
  private float startX; 
  private float endX; 
  private Animation in_lefttoright; 
  private Animation out_lefttoright; 
  private Animation in_righttoleft; 
  private Animation out_righttoleft; 
  @Override 
  protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 
     
     
    in_lefttoright=AnimationUtils.loadAnimation(this, R.anim.enter_lefttoright); 
    out_lefttoright=AnimationUtils.loadAnimation(this, R.anim.out_lefttoright); 
     
    in_righttoleft=AnimationUtils.loadAnimation(this, R.anim.enter_righttoleft); 
    out_righttoleft=AnimationUtils.loadAnimation(this, R.anim.out_righttoleft); 
    viewFlipper=(ViewFlipper) this.findViewById(R.id.viewFlipper); 
  } 
 
 
  //处理触屏时间的方法 
  //手在屏幕上向右滑动然后松开翻下一页，向左翻显示前一页 
  public boolean onTouchEvent(MotionEvent event) { 
    if(event.getAction()==MotionEvent.ACTION_DOWN){ 
      //记录手放在屏幕上的点位置 
      startX=event.getX(); 
    }else if(event.getAction()==MotionEvent.ACTION_UP){ 
      //记录手离开屏幕上的点位置 
      endX=event.getX(); 
      if(endX>startX){ 
        viewFlipper.setInAnimation(in_lefttoright); 
        viewFlipper.setOutAnimation(out_lefttoright); 
        viewFlipper.showNext();//显示下一页 
      }else if(endX<startX){ 
        viewFlipper.setInAnimation(in_righttoleft); 
        viewFlipper.setOutAnimation(out_righttoleft); 
        viewFlipper.showPrevious();//显示前一页 
      } 
      return true; 
    } 
    return super.onTouchEvent(event); 
  } 
   
} 

<?xml version="1.0" encoding="utf-8"?> 
<set xmlns:android="http://schemas.android.com/apk/res/android" 
   android:shareInterpolator="false"> 
  <translate  
    android:fromXDelta="-100%p" 
    android:toXDelta="0" 
    android:duration="1000" 
    /> 
 
 
</set> 

<?xml version="1.0" encoding="utf-8"?> 
<set xmlns:android="http://schemas.android.com/apk/res/android" 
   android:shareInterpolator="false"> 
   <!-- 这里用到了平移动画,这里只动x轴坐标就可以了  
  -100%p:这就是屏幕的宽度:这里的p代表parent,父元素的宽度,都是 
  手机屏幕宽度,第一页要从-100%p移动到0,持续5秒中. 
  --> 
  <translate  
    android:fromXDelta="100%p" 
    android:toXDelta="0" 
    android:duration="1000" 
    /> 
 
 
</set> 

<?xml version="1.0" encoding="utf-8"?> 
<set xmlns:android="http://schemas.android.com/apk/res/android" 
   android:shareInterpolator="false"> 
  <translate  
    android:fromXDelta="0" 
    android:toXDelta="100%p" 
    android:duration="1000" 
    /> 
 
 
</set> 

<?xml version="1.0" encoding="utf-8"?> 
<set xmlns:android="http://schemas.android.com/apk/res/android" 
   android:shareInterpolator="false"> 
  <translate  
    android:fromXDelta="0" 
    android:toXDelta="-100%p" 
    android:duration="1000" 
    /> 
 
 
</set>