Android实现图片左右滑动效果

package com.android.flip;

import android.app.Activity;
import android.os.Bundle;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.View;
import android.view.GestureDetector.OnGestureListener;
import android.view.animation.AnimationUtils;
import android.widget.ImageView;
import android.widget.ViewFlipper;

/**
 * Android实现左右滑动效果
 * @Description: Android实现左右滑动效果

 * @File: MainActivity.java

 * @Package com.android.flip

 * @Author Hanyonglu

 * @Date 2012-02-12 上午10:44:04

 * @Version V1.0
 */
public class MainActivity extends Activity implements OnGestureListener {
  private ViewFlipper flipper;
  private GestureDetector detector;
  
  /** Called when the activity is first created. */
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    
    detector = new GestureDetector(this);
    flipper = (ViewFlipper) this.findViewById(R.id.ViewFlipper1);

    flipper.addView(addImageView(R.drawable.one));
    flipper.addView(addImageView(R.drawable.two));
    flipper.addView(addImageView(R.drawable.three));
    flipper.addView(addImageView(R.drawable.four));
    flipper.addView(addImageView(R.drawable.five));
  }
  
  private View addImageView(int id) {
    ImageView iv = new ImageView(this);
    iv.setImageResource(id);
    return iv;
  }
  
  @Override
  public boolean onTouchEvent(MotionEvent event) {
    // TODO Auto-generated method stub
    return this.detector.onTouchEvent(event);
  }
  
  @Override
  public boolean onDown(MotionEvent e) {
    // TODO Auto-generated method stub
    return false;
  }
  
  @Override
  public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
      float velocityY) {
    if (e1.getX() - e2.getX() > 120) {
      this.flipper.setInAnimation(AnimationUtils.loadAnimation(this, R.anim.push_left_in));
      this.flipper.setOutAnimation(AnimationUtils.loadAnimation(this, R.anim.push_left_out));
      this.flipper.showNext();
      return true;
    } else if (e1.getX() - e2.getX() < -120) {
      this.flipper.setInAnimation(AnimationUtils.loadAnimation(this, R.anim.push_right_in));
      this.flipper.setOutAnimation(AnimationUtils.loadAnimation(this, R.anim.push_right_out));
      this.flipper.showPrevious();
      return true;
    }
    
    return false;
  }
  
  @Override
  public void onLongPress(MotionEvent e) {
    // TODO Auto-generated method stub
    
  }
  
  @Override
  public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX,
      float distanceY) {
    // TODO Auto-generated method stub
    return false;
  }
  
  @Override
  public void onShowPress(MotionEvent e) {
    // TODO Auto-generated method stub
    
  }
  
  @Override
  public boolean onSingleTapUp(MotionEvent e) {
    // TODO Auto-generated method stub
    return false;
  }
}

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:orientation="vertical"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent"
  >

  <ViewFlipper android:id="@+id/ViewFlipper1"
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent">
  </ViewFlipper>
</LinearLayout>

<?xml version="1.0" encoding="utf-8"?> 
<set xmlns:android="http://schemas.android.com/apk/res/android">
  <translate android:fromXDelta="100%p" android:toXDelta="0"
    android:duration="500" />
  <alpha android:fromAlpha="0.1" android:toAlpha="1.0"
    android:duration="500" />
</set>
　　push_left_out.xml文件中代码： 
<?xml version="1.0" encoding="utf-8"?> 
<set xmlns:android="http://schemas.android.com/apk/res/android">
  <translate android:fromXDelta="0" android:toXDelta="-100%p"
    android:duration="500" />
  <alpha android:fromAlpha="1.0" android:toAlpha="0.1"
    android:duration="500" />
</set>

<?xml version="1.0" encoding="utf-8"?> 
<set xmlns:android="http://schemas.android.com/apk/res/android">
  <translate android:fromXDelta="-100%p" android:toXDelta="0"
    android:duration="500" />
  <alpha android:fromAlpha="0.1" android:toAlpha="1.0"
    android:duration="500" />
</set>

<?xml version="1.0" encoding="utf-8"?> 
<set xmlns:android="http://schemas.android.com/apk/res/android">
  <translate android:fromXDelta="0" android:toXDelta="100%p"
    android:duration="500" />
  <alpha android:fromAlpha="1.0" android:toAlpha="0.1"
    android:duration="500" />
</set>