Android_ViewFlipper手势滑动

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XML文件：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context="com.example.android_viewflipper.MainActivity" >    <ViewFlipper        android:id="@+id/flipple"         android:layout_width="wrap_content"        android:layout_height="wrap_content"        ></ViewFlipper></RelativeLayout>

MainActivity.java

package com.example.android_viewflipper;import android.app.Activity;import android.os.Bundle;import android.view.Menu;import android.view.MenuItem;import android.view.MotionEvent;import android.widget.ImageView;import android.widget.ViewFlipper;public class MainActivity extends Activity {    private ViewFlipper flipple;    private float startx;    private int[]resID={R.drawable.s1,R.drawable.s2,R.drawable.aa,R.drawable.zj};    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        flipple = (ViewFlipper) findViewById(R.id.flipple);        //动态导入的方式为ViewFlipper加入子View        for(int i=0;i<resID.length;i++){            flipple.addView(getImageView(resID[i]));        }        /*         * 支持图片自动轮播         * */        //设置视图切换时间间隔        //flipple.setFlipInterval(3000);        //flipple.startFlipping();    }    @Override    public boolean onTouchEvent(MotionEvent event) {        // TODO Auto-generated method stub        switch(event.getAction()){        //手指落下        case MotionEvent.ACTION_DOWN:{             startx = event.getX();             break;        }        case MotionEvent.ACTION_MOVE: {            //向右滑动看前一页            if(event.getX()-startx>100){                flipple.showPrevious();                break;            }            //向左滑动看后一页            if(startx-event.getX()>100){                flipple.showNext();                break;            }        }        //手指离开        case MotionEvent.ACTION_UP:{            break;        }        }        return super.onTouchEvent(event);    }    private ImageView getImageView(int resID){        ImageView  imageView = new ImageView(this);        //imageView.setImageResource(resID);        imageView.setBackgroundResource(resID);//铺满整个屏幕        return imageView;    }}

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