android 滑动效果---左右滑动

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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
* @author Administrator
*
*/
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(addTextView(R.drawable.one));
        flipper.addView(addTextView(R.drawable.two));
        flipper.addView(addTextView(R.drawable.three));
        flipper.addView(addTextView(R.drawable.four));
        flipper.addView(addTextView(R.drawable.five));
    }

    private View addTextView(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;
    }

}

=======================================================

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/ViewFlipper1"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent">
    </ViewFlipper>

======================

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" />

=================================

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="0.1" android:toAlpha="1.0"
        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="0" android:toXDelta="100%p"
        android:duration="500" />
    <alpha android:fromAlpha="1.0" android:toAlpha="0.1"
        android:duration="500" />

</set>