Phonegap 版本minSdkVersion为8的时候的自动更新与升级

清单文件中：

<uses-sdk android:minSdkVersion="8" android:targetSdkVersion="8"/>

在主窗口MainActivity中

package fx.qj.xinjiangqj;
import android.os.Bundle;


import android.view.KeyEvent;
import android.view.Menu; 
import android.view.MenuItem;
import android.widget.Toast;

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;
import org.apache.cordova.*;


public class MainActivity extends DroidGap {
     private long exitTime = 0;
     String newVerName = "";//新版本名称
     int newVerCode = -1;//新版本号
     ProgressDialog pd = null;
     String UPDATE_SERVERAPK = "xx.apk";
    @Override
    public void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          super.init();
          android.webkit.WebSettings settings = super.appView.getSettings();
          String appCachePath = this.getCacheDir().getAbsolutePath();
          settings.setAppCachePath(appCachePath);
          settings.setAllowFileAccess(true);
          settings.setAppCacheEnabled(true);
          super.setIntegerProperty("splashscreen",R.drawable.startup_bg1);
          super.loadUrl("file:///android_asset/www/index.html",5000);
          updateVersion();
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }
    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        if (keyCode == KeyEvent.KEYCODE_BACK) {
            exit();
            return false;
        }
        return super.onKeyDown(keyCode, event);
    }

    public void exit() {
        if ((System.currentTimeMillis() - exitTime) > 2000) {
            Toast.makeText(getApplicationContext(), "再按一次退出程序",
                    Toast.LENGTH_SHORT).show();
            exitTime = System.currentTimeMillis();
        } else {
            finish();
            System.exit(0);
        }
    }
    
    public void updateVersion(){      
        if(getServerVer()){
               int verCode = this.getVerCode(this);
               System.out.println(newVerCode);
               if(newVerCode>verCode){
                   doNewVersionUpdate();//更新版本
               }else{
                  //notNewVersionUpdate();//提示已是最新版本
               }
           }
       }

         
            public int getVerCode(Context context){
                int verCode = -1;
                try {
                 String packName = context.getPackageName();
                    verCode = context.getPackageManager().getPackageInfo(packName, 0).versionCode;
                } catch (NameNotFoundException e) {
                    // TODO Auto-generated catch block
                    Log.e("版本号获取异常", e.getMessage());
                }
                return verCode;
            }

           
            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;
            }
            
           
            public boolean getServerVer(){
                try {
                    String path=getResources().getString(R.string.url_server); 
                    URL url = new URL(path);
                    HttpURLConnection httpConnection = (HttpURLConnection) url.openConnection();
                    //httpConnection.setDoInput(true);
                    //httpConnection.setDoOutput(true);
                    //httpConnection.setRequestProperty("Content-type", "application/x-java-serialized-object");
                    httpConnection.setRequestMethod("GET");
                    httpConnection.connect();
                    InputStream inputStream = httpConnection.getInputStream();  
                    InputStreamReader reader = new InputStreamReader(inputStream);
                    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;
            }
            
           
            public void notNewVersionUpdate(){
                int verCode = this.getVerCode(this);
                String verName = this.getVerName(this);
                StringBuffer sb = new StringBuffer();
                sb.append("当前版本：");
                sb.append(verName);
                sb.append(" Code:");
                sb.append(verCode);
                sb.append("
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();
            }
            
           
            public void doNewVersionUpdate(){
                int verCode = this.getVerCode(this);
                String verName = this.getVerName(this);
                StringBuffer sb = new StringBuffer();
                sb.append("当前版本：");
                sb.append(verName);
                sb.append(" Code:");
                sb.append(verCode);
                sb.append(",发现版本：");
                sb.append(newVerName);
                sb.append(" Code:");
                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(MainActivity.this);
                        pd.setTitle("正在下载");
                        pd.setMessage("请稍后。。。");
                        pd.setProgressStyle(ProgressDialog.STYLE_SPINNER);
                        String apkpath=getResources().getString(R.string.url_apk); 
                        downFile(apkpath);
                    }
                })
                .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();
            }
            
           
            public void downFile(final String url){
                pd.show();
                new Thread(){
                    public void run(){
                        HttpClient client = new DefaultHttpClient();
                        HttpGet get = new HttpGet(url);
                        HttpResponse response;
                        System.out.println(url);
                        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();
                }
            };
            
           
            public void down(){
                new Thread(){
                    public void run(){
                        Message message = handler.obtainMessage();
                        handler.sendMessage(message);
                    }
                }.start();
            }
            
           
            public void update(){
                Intent intent = new Intent(Intent.ACTION_VIEW);
                intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                intent.setDataAndType(Uri.fromFile(new File(Environment.getExternalStorageDirectory(),UPDATE_SERVERAPK))
                        , "application/vnd.android.package-archive");
                startActivity(intent);
            }
}

在服务器上的js文件

[{"verName":"xinjiangQJ","verCode":2}]

参考资料： http://blog.sina.com.cn/s/blog_5419658701014wg0.html

未测试的资料，使用xml存储数据：

http://blog.csdn.net/coolszy/article/details/7518345

http://blog.csdn.net/furongkang/article/details/6886526