ViewFlipper结合手势OnGestureListener制作的滑动切换效果

先要了解ViewFlipper,详细见：
http://gundumw100.iteye.com/admin/blogs/896840

OnGestureListener和OnDoubleTapListener接口定义：

public interface OnGestureListener {
                // Touch down时触发, e为down时的MotionEvent
                boolean onDown(MotionEvent e);
                // 在Touch down之后一定时间（115ms）触发，e为down时的MotionEvent
                void onShowPress(MotionEvent e);
                // Touch up时触发，e为up时的MotionEvent
                boolean onSingleTapUp(MotionEvent e);
                // 滑动时触发，e1为down时的MotionEvent，e2为move时的MotionEvent
                boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY);
                // 在Touch down之后一定时间（500ms）触发，e为down时的MotionEvent
                void onLongPress(MotionEvent e);
                // 滑动一段距离，up时触发，e1为down时的MotionEvent，e2为up时的MotionEvent
                boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY);
}
 
public interface OnDoubleTapListener {
                // 完成一次单击，并确定没有二击事件后触发（300ms），e为down时的MotionEvent
                boolean onSingleTapConfirmed(MotionEvent e);
                // 第二次单击down时触发，e为第一次down时的MotionEvent
                boolean onDoubleTap(MotionEvent e);
                // 第二次单击down,move和up时都触发，e为不同时机下的MotionEvent
                boolean onDoubleTapEvent(MotionEvent e);
}

实例：

import android.app.Activity;
import android.os.Bundle;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.View;
import android.widget.Button;
import android.widget.ViewFlipper;

public class FlingSlideActivity extends Activity implements GestureDetector.OnGestureListener,GestureDetector.OnDoubleTapListener{
	private ViewFlipper mViewFlipper;
	private GestureDetector mGestureDetector;
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        mViewFlipper = (ViewFlipper) findViewById(R.id.flipper);
        Button button1 = (Button) findViewById(R.id.Button1);   
        button1.setOnClickListener(new View.OnClickListener() {   
            public void onClick(View view) {
                mViewFlipper.showNext();   
            }   
        });
        Button button2 = (Button) findViewById(R.id.Button2);   
        button2.setOnClickListener(new View.OnClickListener() {   
            public void onClick(View view) {
                mViewFlipper.showNext();   
            }   
        });      
        Button button3 = (Button) findViewById(R.id.Button3);   
        button3.setOnClickListener(new View.OnClickListener() {   
            public void onClick(View view) {
                mViewFlipper.showNext();   
            }
        });
        mGestureDetector = new GestureDetector(this);
    }
    //别忘了覆盖onTouchEvent方法
    @Override
	public boolean onTouchEvent(MotionEvent event) {
		return mGestureDetector.onTouchEvent(event);
	}
    //以下是OnGestureListener需要实现的方法
	public boolean onDown(MotionEvent e) {
		// TODO Auto-generated method stub
		return false;
	}
	public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
			float velocityY) {
		// TODO Auto-generated method stub
		if(e1.getX() > e2.getX()) {//向左滑动
			mViewFlipper.setInAnimation(getApplicationContext(), R.anim.push_left_in);   
			mViewFlipper.setOutAnimation(getApplicationContext(), R.anim.push_left_out);   
	       mViewFlipper.showNext();   
       }else if(e1.getX() < e2.getX()) {//向右滑动
    	   mViewFlipper.setInAnimation(getApplicationContext(), R.anim.push_right_in);   
    	   mViewFlipper.setOutAnimation(getApplicationContext(), R.anim.push_right_out);   
           mViewFlipper.showPrevious();   
       }else {   
           return false;   
       }   
       return true;
	}

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

	public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX,
			float distanceY) {
		// TODO Auto-generated method stub
		return false;
	}

	public void onShowPress(MotionEvent e) {
		// TODO Auto-generated method stub
		
	}

	public boolean onSingleTapUp(MotionEvent e) {
		// TODO Auto-generated method stub
		return false;
	}
	//以下是OnDoubleTapListener需要实现的方法
	public boolean onDoubleTap(MotionEvent e) {
		// TODO Auto-generated method stub
	       mViewFlipper.startFlipping(); //双击自动切换界面
	       return true;
	}
	public boolean onDoubleTapEvent(MotionEvent e) {
		// TODO Auto-generated method stub
		return false;
	}
	public boolean onSingleTapConfirmed(MotionEvent e) {
		// TODO Auto-generated method stub
		if(mViewFlipper.isFlipping()){ //单击结束自动切换
			mViewFlipper.stopFlipping();
		}
		return false;
	}
	
}

main.xml

<?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/flipper"  
       android:layout_width="fill_parent"    
       android:layout_height="fill_parent"  
       android:persistentDrawingCache="animation"  
       android:flipInterval="3000"
       android:inAnimation="@anim/push_left_in"  
	   android:outAnimation="@anim/push_left_out"
	   >
	   <LinearLayout   
           android:orientation="vertical"  
           android:layout_width="fill_parent"    
           android:layout_height="fill_parent">   
           <Button   
              android:text="Next1"    
              android:id="@+id/Button1"  
              android:layout_width="fill_parent"    
              android:layout_height="wrap_content">   
           </Button>   
           <ImageView   
              android:id="@+id/image1"    
              android:src="@drawable/icon"  
              android:layout_width="fill_parent"  
              android:layout_height="wrap_content">   
           </ImageView>   
       </LinearLayout>   
    
       <LinearLayout   
           android:orientation="vertical"  
           android:layout_width="fill_parent"    
           android:layout_height="fill_parent">   
           <Button   
              android:text="Next2"    
              android:id="@+id/Button2"  
              android:layout_width="fill_parent"    
              android:layout_height="wrap_content">   
           </Button>   
           <ImageView   
              android:id="@+id/image2"    
              android:src="@drawable/icon"  
              android:layout_width="fill_parent"  
              android:layout_height="wrap_content">   
           </ImageView>   
       </LinearLayout>   
          
       <LinearLayout   
           android:orientation="vertical"  
           android:layout_width="fill_parent"    
           android:layout_height="fill_parent">   
           <Button   
              android:text="Next3"    
              android:id="@+id/Button3"  
              android:layout_width="fill_parent"    
              android:layout_height="wrap_content">   
           </Button>   
           <ImageView   
              android:id="@+id/image3"    
              android:src="@drawable/icon"  
              android:layout_width="fill_parent"  
              android:layout_height="wrap_content">   
           </ImageView>   
       </LinearLayout>
	</ViewFlipper>
</LinearLayout>

4个动画文件：

push_left_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="0.0"    
    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="0.0"    
    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="0.0"    
    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="0.0"    
    android:duration="500" />   
</set>