实现了在android实现左右滑动切换界面的效果

这是实现了在android实现左右滑动切换界面的效果，该效果的源码下载，请到源码天堂下载吧，喜欢的朋友可以研究一下。

布局文件

package com.marsor.desk;import java.io.File;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.util.ArrayList;import java.util.List;import android.app.Activity;import android.app.AlertDialog;import android.app.AlertDialog.Builder;import android.content.BroadcastReceiver;import android.content.ComponentName;import android.content.Context;import android.content.DialogInterface;import android.content.Intent;import android.content.IntentFilter;import android.content.pm.PackageInfo;import android.content.pm.PackageManager;import android.content.res.AssetManager;import android.content.res.Configuration;import android.graphics.Color;import android.net.Uri;import android.os.Bundle;import android.util.Log;import android.view.GestureDetector;import android.view.GestureDetector.OnGestureListener;import android.view.KeyEvent;import android.view.Menu;import android.view.MenuItem;import android.view.MotionEvent;import android.view.View;import android.view.View.OnClickListener;import android.view.View.OnTouchListener;import android.view.animation.TranslateAnimation;import android.widget.ImageView;import android.widget.LinearLayout;import android.widget.LinearLayout.LayoutParams;import android.widget.TextView;import android.widget.Toast;public class MarsorDeskActivity extends Activity {GestureDetector mGestureDetector;LinearLayout layFirst;LinearLayout laySec;LinearLayout layThird;LinearLayout layFourth;LinearLayout layContain;//当前显示的layoutLinearLayout layCur;//左边的layoutLinearLayout layLeft;//右边的layoutLinearLayout layRight;int screenWidth;ArrayList<MyAppInfo> mApplications = new ArrayList<MyAppInfo>();TextView roll_dot1,roll_dot2,roll_dot3,roll_dot4;ArrayList<String> packagNameList ;private final int MENU_EXIT = 01;private MyReceiver receiver;private OnTouchListener myTouch = new OnTouchListener(){    @Overridepublic boolean onTouch(View v, MotionEvent event) {return mGestureDetector.onTouchEvent(event);}        };    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        initpackagNameList();        //监听系统新安装程序的广播        receiver = new MyReceiver();        IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED);        filter.addDataScheme("package");    //必须添加这项，否则拦截不到广播        registerReceiver(receiver, filter);                layContain = (LinearLayout) this.findViewById(R.id.layContain);        layFirst = (LinearLayout) this.findViewById(R.id.layFirst);        laySec = (LinearLayout) this.findViewById(R.id.laySec);        layThird = (LinearLayout) this.findViewById(R.id.layThird);        layFourth = (LinearLayout) this.findViewById(R.id.layFourth);                roll_dot1 = (TextView) findViewById(R.id.roll_dot1);        roll_dot2 = (TextView) findViewById(R.id.roll_dot2);        roll_dot3 = (TextView) findViewById(R.id.roll_dot3);        roll_dot4 = (TextView) findViewById(R.id.roll_dot4);                layCur = layFirst;        layLeft = null;        layRight = laySec;                layFirst.setOnTouchListener(myTouch);        laySec.setOnTouchListener(myTouch);        layThird.setOnTouchListener(myTouch);        layFourth.setOnTouchListener(myTouch);                //设置宽度        screenWidth = getWindowManager().getDefaultDisplay().getWidth();        layFirst.getLayoutParams().width = screenWidth;        laySec.getLayoutParams().width = screenWidth;        layThird.getLayoutParams().width = screenWidth;        layFourth.getLayoutParams().width = screenWidth;                 mGestureDetector = new GestureDetector(this, new OnGestureListener(){@Overridepublic boolean onDown(MotionEvent e) {return true;}@Overridepublic boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {int x = (int) (e2.getX() - e1.getX());//判断方向boolean dir = x>0;//如果大于0，为true，说明向右移动，直接将其前一个视图的marginleft设置成0，如果是向左移动，则直接将maringleft试着称宽度的负数if(dir){if(layLeft == null)return false;LinearLayout.LayoutParams llp = (LayoutParams) layLeft.getLayoutParams();TranslateAnimation anim1 = new TranslateAnimation(llp.leftMargin,0,0,0);anim1.setDuration(500l);layLeft.startAnimation(anim1);//layLeft.setAnimation(anim);llp.setMargins(0, 0, 0, 0);layLeft.setLayoutParams(llp);if(layLeft == layFirst){layLeft = null;layCur = layFirst;layRight =laySec ;//设置屏幕下方的小点随着页面的切换而改变roll_dot2.setTextColor(Color.BLACK);roll_dot1.setTextColor(Color.WHITE);}else if(layLeft == laySec){layLeft = layFirst;layCur = laySec;layRight =layThird ;roll_dot3.setTextColor(Color.BLACK);roll_dot2.setTextColor(Color.WHITE);}else if(layLeft == layThird){layLeft = laySec;layCur = layThird;layRight =layFourth ;roll_dot4.setTextColor(Color.BLACK);roll_dot3.setTextColor(Color.WHITE);}}else{if(layRight == null)return false;LinearLayout.LayoutParams llp = (LayoutParams) layCur.getLayoutParams();int width = layCur.getWidth();TranslateAnimation anim = new TranslateAnimation(width,0,0,0);anim.setDuration(500l);layRight.startAnimation(anim);llp.setMargins(-width, 0, 0, 0);layCur.setLayoutParams(llp);if(layCur == layFirst){layLeft = layFirst;layCur = laySec;layRight =layThird ;roll_dot1.setTextColor(Color.BLACK);roll_dot2.setTextColor(Color.WHITE);}else if(layCur == laySec){layLeft = laySec;layCur = layThird;layRight = layFourth ;roll_dot2.setTextColor(Color.BLACK);roll_dot3.setTextColor(Color.WHITE);}else if(layCur == layThird){layLeft = layThird;layCur = layFourth;layRight = null ;roll_dot3.setTextColor(Color.BLACK);roll_dot4.setTextColor(Color.WHITE);}}return true;}@Overridepublic void onLongPress(MotionEvent e) {// TODO Auto-generated method stub}@Overridepublic boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {// TODO Auto-generated method stubreturn false;}@Overridepublic void onShowPress(MotionEvent e) {// TODO Auto-generated method stub}@Overridepublic boolean onSingleTapUp(MotionEvent e) {// TODO Auto-generated method stubreturn false;}                });}