Android ViewFlipper滑动屏幕切换图片

一、MainActivity。java类文件：

package com.cn.daming;

import android.app.Activity;
import android.content.Intent;
import android.graphics.Color;
import android.graphics.drawable.GradientDrawable;
import android.graphics.drawable.GradientDrawable.Orientation;
import android.os.Bundle;
import android.util.Log;
import android.view.GestureDetector;
import android.view.GestureDetector.OnGestureListener;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.animation.AnimationUtils;
import android.widget.ViewFlipper;

public class MainActivity extends Activity implements OnGestureListener{
    
    private GestureDetector detector;
    private ViewFlipper flipper;
    private final int HELPFILP_RESULT = 106;
    Intent getMainActivity = null;
    int count = 1;
    
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        drawBackground();
        LayoutInflater inflater = LayoutInflater.from(this);
        final View layout = inflater.inflate(R.layout.view_flipper, null);
        setContentView(layout);
        flipper = (ViewFlipper) findViewById(R.id.view_flipper);
        detector = new GestureDetector(this);
    }

    public void drawBackground()
    {
        GradientDrawable grad = new GradientDrawable( 
                   Orientation.TL_BR,
                   new int[] {Color.rgb(0, 0, 127),
                           Color.rgb(0, 0, 255),
                           Color.rgb(127, 0, 255),
                           Color.rgb(127, 127, 255),
                           Color.rgb(127, 255, 255),
                           Color.rgb(255, 255, 255)} 
        ); 

        this.getWindow().setBackgroundDrawable(grad);
    }
    
    @Override
    public boolean onTouchEvent(MotionEvent event) {
        return this.detector.onTouchEvent(event);
    }

    public boolean onDown(MotionEvent arg0) {
        // TODO Auto-generated method stub
        return false;
    }

    public boolean onFling(MotionEvent e1, MotionEvent e2, float arg2,
            float arg3) {
        Log.i("Fling", "Fling Happened!");
        if (e1.getX() - e2.getX() > 5) {
            this.flipper.setInAnimation(AnimationUtils.loadAnimation(this,
                    R.anim.push_left_in));
            this.flipper.setOutAnimation(AnimationUtils.loadAnimation(this,
                    R.anim.push_left_out));
            if (count < 3) {
                this.flipper.showNext();
                count++;
            }

            return true;
        } else if (e1.getX() - e2.getX() < -5) {
            this.flipper.setInAnimation(AnimationUtils.loadAnimation(this,
                    R.anim.push_right_in));
            this.flipper.setOutAnimation(AnimationUtils.loadAnimation(this,
                    R.anim.push_right_out));
            if (count > 1) {
                this.flipper.showPrevious();
                count--;
            }
            return true;
        }
        return true;
    }

    public void onLongPress(MotionEvent arg0) {
        // TODO Auto-generated method stub
        
    }

    public boolean onScroll(MotionEvent arg0, MotionEvent arg1, float arg2,
            float arg3) {
        // TODO Auto-generated method stub
        return false;
    }

    public void onShowPress(MotionEvent arg0) {
        // TODO Auto-generated method stub
        
    }

    public boolean onSingleTapUp(MotionEvent arg0) {
        // TODO Auto-generated method stub
        return false;
    }
}

二、view_flipper.xml布局文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/layout" android:orientation="horizontal"
    android:layout_width="fill_parent" android:layout_height="fill_parent"
    >
    <ViewFlipper android:id="@+id/view_flipper"
        android:layout_width="fill_parent" android:layout_height="fill_parent"
        android:persistentDrawingCache="animation" android:flipInterval="1000"
        android:inAnimation="@anim/push_left_in" android:outAnimation="@anim/push_left_out">
        <LinearLayout android:orientation="horizontal" 
            android:layout_width="fill_parent" android:layout_height="fill_parent">
            <ImageView android:id="@+id/view_bg1" android:src="@drawable/bg1"
                android:layout_width="fill_parent" android:layout_height="fill_parent"
                >
            </ImageView>
        </LinearLayout>
        <LinearLayout android:orientation="horizontal" 
            android:layout_width="fill_parent" android:layout_height="fill_parent">
            <ImageView android:id="@+id/view_bg2" android:src="@drawable/bg2"
                android:layout_width="fill_parent" android:layout_height="fill_parent"
                >
            </ImageView>
        </LinearLayout>
        <LinearLayout android:orientation="horizontal"
            android:layout_width="fill_parent" android:layout_height="fill_parent">
            <ImageView android:id="@+id/view_bg3" android:src="@drawable/bg3"
                android:layout_width="fill_parent" android:layout_height="fill_parent"
            >
            </ImageView>
        </LinearLayout>
    </ViewFlipper>
</LinearLayout> 

三、anim动画布局文件：

1、push_left_in.xml布局文件：

<?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>

2、push_left_out.xml布局文件:

<?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>

3、push_right_in.xml布局文件:

<?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>

4、push_right_out.xml布局文件:

<?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>