phonegap android更新

package com.club.test;

import org.apache.cordova.DroidGap;
import android.os.Bundle;


import android.view.Menu; 
import android.view.MenuItem;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONArray;
import org.json.JSONObject;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageManager.NameNotFoundException;
import android.net.Uri;
import android.os.Environment;
import android.os.Handler;
import android.os.Message;
import android.util.Log;

public class Club16Activity extends DroidGap {
    /** Called when the activity is first created. */
	
	String newVerName = "";//版本名称
    int newVerCode = -1;//版本号
    ProgressDialog pd = null;
    String UPDATE_SERVERAPK = "Club16.apk";
    String  downUrl="http://114.112.41.50:8006/android/Club16.apk";
    String  serverurl="http://114.112.41.50:8006/android/version.js";
    boolean result=false; //更新标识
    @Override
    public void onCreate(Bundle savedInstanceState) {
    	 
    	 super.onCreate(savedInstanceState);
          //super.setBooleanProperty("keepRunning", false);
    	 super.setIntegerProperty("loadUrlTimeoutValue",60000);
        updateVersion();//启动时就检查 或者 在菜单中调用
        if(!result){
        super.loadUrl("file:///android_asset/www/index.html");}
        
    }
    
    public void updateVersion(){
        if(getServerVer()){
               int verCode = this.getVerCode(this);
               if(newVerCode>verCode){
                   doNewVersionUpdate();//更新版本
               }
//               else{
//                   //alert("")
//                 notNewVersionUpdate();//提示已是最新版本
//               }
           }
       }
          /**
             * 获得版本号
             */
            public int getVerCode(Context context){
                int verCode = -1;
                try {
                 String packName = context.getPackageName();
                    verCode = context.getPackageManager().getPackageInfo(packName, 0).versionCode;
                    System.out.println("当前版本号："+ verCode);
                } catch (NameNotFoundException e) {
                    // TODO Auto-generated catch block
                    Log.e("版本号获取异常", e.getMessage());
                }
                return verCode;
            }
            /**
             * 获得版本名称
             */
            public String getVerName(Context context){
                String verName = "";
                try {
                 String packName = context.getPackageName();
                    verName = context.getPackageManager().getPackageInfo(packName, 0).versionName;
                } catch (NameNotFoundException e) {
                    Log.e("版本名称获取异常", e.getMessage());
                }
                return verName;
            }
            
            /**
             * 从服务器端获得版本号与版本名称
             * @return
             */
            public boolean getServerVer(){
                try {
                    URL url = new URL(serverurl);
                    HttpURLConnection httpConnection = (HttpURLConnection) url.openConnection();
                    httpConnection.setDoInput(true);
                    httpConnection.setDoOutput(true);
                    httpConnection.setRequestMethod("GET");
                    httpConnection.connect();
                    InputStreamReader reader = new InputStreamReader(httpConnection.getInputStream());
                    BufferedReader bReader = new BufferedReader(reader);
                    String json = bReader.readLine();
                    JSONArray array = new JSONArray(json);
                    JSONObject jsonObj = array.getJSONObject(0);
                    newVerCode = Integer.parseInt(jsonObj.getString("verCode"));        
                    newVerName = jsonObj.getString("verName");
                } catch (Exception e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                    return true;//如果这里改为false 则不更新会退出程序
                } 
                return true;
            }
            
            /**
             * 不更新版本
             */
            public void notNewVersionUpdate(){
                int verCode = this.getVerCode(this);
                String verName = this.getVerName(this);
                StringBuffer sb = new StringBuffer();
                sb.append("当前版本名称：");
                sb.append(verName);
                sb.append(" 当前版本号：");
                sb.append(verCode);
                sb.append("\n已是最新版本，无需更新");
                Dialog dialog = new AlertDialog.Builder(this)
                .setTitle("软件更新")
                .setMessage(sb.toString())
                .setPositiveButton("确定", new DialogInterface.OnClickListener() {
                    
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        // TODO Auto-generated method stub
                        finish();
                    }
                }).create();
                dialog.show();
            }
            
            /**
             * 更新版本
             */
            public void doNewVersionUpdate(){
                int verCode = this.getVerCode(this);
                String verName = this.getVerName(this);
                StringBuffer sb = new StringBuffer();
                sb.append("当前版本名称：");
                sb.append(verName);
                sb.append("当前版本号：");
                sb.append(verCode);
                sb.append(",发现版本名称：");
                sb.append(newVerName);
                sb.append(" 版本号:");
                sb.append(newVerCode);
                sb.append(",是否更新");
                Dialog dialog = new AlertDialog.Builder(this)
                .setTitle("软件更新")
                .setMessage(sb.toString())
                .setPositiveButton("更新", new DialogInterface.OnClickListener() {
                    
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        // TODO Auto-generated method stub
                        pd = new ProgressDialog(Club16Activity.this);
                        pd.setTitle("正在下载");
                        pd.setMessage("请稍后。。。");
                        pd.setProgressStyle(ProgressDialog.STYLE_SPINNER);
                        result=true;
                        System.out.println("result 下载"+result);
                        downFile(downUrl);
                        
                    }
                })
                .setNegativeButton("暂不更新", new DialogInterface.OnClickListener() {
                    
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        // TODO Auto-generated method stub
                        //finish();
                    	
                    }
                }).create();
                //显示更新框
                dialog.show();
            }
            
            /**
             * 下载apk
             */
            public void downFile(final String url){
                pd.show();
                new Thread(){
                    public void run(){
                        HttpClient client = new DefaultHttpClient();
                        HttpGet get = new HttpGet(url);
                        HttpResponse response;
                        try {
                            response = client.execute(get);
                            HttpEntity entity = response.getEntity();
                            long length = entity.getContentLength();
                            InputStream is =  entity.getContent();
                            FileOutputStream fileOutputStream = null;
                            if(is != null){
                                File file = new File(Environment.getExternalStorageDirectory(),UPDATE_SERVERAPK);
                                fileOutputStream = new FileOutputStream(file);
                                byte[] b = new byte[1024];
                                int charb = -1;
                                int count = 0;
                                while((charb = is.read(b))!=-1){
                                    fileOutputStream.write(b, 0, charb);
                                    count += charb;
                                }
                            }
                            fileOutputStream.flush();
                            if(fileOutputStream!=null){
                                fileOutputStream.close();
                            }
                            down();
                        }  catch (Exception e) {
                            // TODO Auto-generated catch block
                            e.printStackTrace();
                        }
                    }
                }.start();
            }
            
            Handler handler = new Handler() {
                @Override
                public void handleMessage(Message msg) {
                    super.handleMessage(msg);                
                    pd.cancel();
                    update();
                }
            };
            
            /**
             * 下载完成，通过handler将下载对话框取消
             */
            public void down(){
                new Thread(){
                    public void run(){
                        Message message = handler.obtainMessage();
                        handler.sendMessage(message);
                    }
                }.start();
            }
            
            /**
             * 安装应用
             */
            public void update(){
                Intent intent = new Intent(Intent.ACTION_VIEW);
                intent.setDataAndType(Uri.fromFile(new File(Environment.getExternalStorageDirectory(),UPDATE_SERVERAPK))
                        , "application/vnd.android.package-archive");
                startActivity(intent);
            }
    
}

服务器上version.js 文件格式 [{"verName":"app","verCode":2}]
参考 http://www.cnblogs.com/henshui/articles/2475533.html