ViewFlipper实现滑动换图效果

bangzhu.xml布局文件

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >
      <ViewFlipper 
     android:id="@+id/newHandHelpViewFlipper"
     android:layout_width="fill_parent"
     android:layout_height="fill_parent" /> 

</RelativeLayout>

anim文件夹下的特效文件  push_left_in.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
    <!-- 画面转换位置移动动画效果 
              开始向左动画
     fromXDelta ： 动画开始时 X坐标位置
     toXDelta ：动画结束时 X坐标位置
     duration ：动画持续时间-->
    <translate 
        android:fromXDelta="100%p" 
        android:toXDelta="0"
        android:duration="500" />
    <!-- 渐变透明的动画效果 -->
    <alpha 
        android:fromAlpha="0.1" 
        android:toAlpha="1.0"
        android:duration="500"/>
</set>

push_left_out.xml

<?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>

push_right_in.xml

<?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_right_out.xml

<?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> 

代码：

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

/*
 * 新手帮助，引导页
 */
public class XinshouHelpActivity extends Activity implements android.view.GestureDetector.OnGestureListener{

	private ViewFlipper viewFlipper;
	private GestureDetector gesture;
	
	@Override
	public void onCreate(Bundle savedInstanceState)
	{
		super.onCreate(savedInstanceState);
		setContentView(R.layout.bangzhu);
		viewFlipper=(ViewFlipper)findViewById(R.id.newHandHelpViewFlipper);
		gesture=new GestureDetector(this);
		
		viewFlipper.addView(getImageView(R.drawable.guide1));
		viewFlipper.addView(getImageView(R.drawable.guide2));
		viewFlipper.addView(getImageView(R.drawable.guide3));
		viewFlipper.addView(getImageView(R.drawable.guide5));
	}
   
	//添加视图
	private View getImageView(int resId)
	{
		ImageView img=new ImageView(this);
		img.setImageResource(resId);
		return img;
	}
	
	//监听触摸事件
	@Override
	public boolean onTouchEvent(MotionEvent event)
	{
		return gesture.onTouchEvent(event);
	}
	
	@Override
	public boolean onDown(MotionEvent e) {
		// TODO Auto-generated method stub
		return false;
	}
    //down事件发生而move或则up还没发生前触发该事件
	@Override
	public void onShowPress(MotionEvent e) {
		// TODO Auto-generated method stub
		
	}
    //一次点击up事件
	@Override
	public boolean onSingleTapUp(MotionEvent e) {
		// TODO Auto-generated method stub
		return false;
	}
    
	//在屏幕上拖动事件
	@Override
	public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX,
			float distanceY) {
		// TODO Auto-generated method stub
		return false;
	}

	@Override
	public void onLongPress(MotionEvent e) {
		// TODO Auto-generated method stub
		
	}

	//滑动手势事件
	@Override
	public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
			float velocityY) {
		if(e1.getX() - e2.getX() > 120)
		{//向右滑动
		   viewFlipper.setInAnimation(AnimationUtils.loadAnimation(this, R.anim.push_left_in));
		   viewFlipper.setOutAnimation(AnimationUtils.loadAnimation(this, R.anim.push_left_out));
		   viewFlipper.showNext();
	     }
		else if(e2.getX() - e1.getX() > 120)
		 {//向左滑动
			viewFlipper.setInAnimation(AnimationUtils.loadAnimation(this, R.anim.push_right_in));
			viewFlipper.setOutAnimation(AnimationUtils.loadAnimation(this, R.anim.push_right_out));
			viewFlipper.showPrevious();
		}
		return false;
	}

}

效果不是很好，没做到手指滑动时视图跟着滚动的效果，但是勉强还是可以用接受。。。。