android 应用程序在线版本更新

第一步：应用系统配置文件----应用版本配置信息

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="TP.NationalTest"
android:versionCode= "4"
android:versionName= "1.4">
<uses-sdk android:minSdkVersion="4" />
versionCode：版本号
versionName：版本名称
minSdkVersion：最小SDk版本

第二步：后台验证当前应用版本是否要更新
/*检测应用版本*/
private void CheckAppEdtion()
{
      //判断网络连接，如连接
      //Step One 判断当前是否有网络连接,
      if(!NetWorkUtility.CheckConnection(this))
      {
            return;
      }
      //获取网络平台的版本信息
      CAppInfo model=AppDataServiceHelper.GetAppEdtionInfo(ProjectConstant.AppID);

      //比较版本信息，有新版本 弹出 对话框
      
      if(model!=null)
      {
             try {
             PackageInfo info = this.getPackageManager().getPackageInfo(this.getPackageName(), 0);
             int oldVersion = info.versionCode;
             int newVersion = Integer.parseInt(model.Edition);
             if(newVersion > oldVersion){
                   //创建更新对话框，并弹出
                   AppUpdateDialog.CreateRegisterAlert(this);
                   }
            } catch (Exception e) {
             // TODO Auto-generated catch block
             e.printStackTrace();
            }
      }
}

第三步：弹出对话框 ，用户选择是否要更新APK

static ProgressDialog m_Dialog;
static Context m_context=null ;
static AlertDialog appupdatedialog=null;
/*创建查看单题对话框*/
public static void CreateRegisterAlert(Context context)
{
       m_context=context;
       Dialog dialog = new AlertDialog.Builder(context).setTitle("系统更新")
       .setMessage("已有新版本，是否更新？")
       .setPositiveButton("确定",new DialogInterface.OnClickListener() {
             public void onClick(DialogInterface dialog, int which) {
                   m_Dialog=ProgressDialog.show(m_context, "请等待...", "正在更新，请稍后...",true);
                   mRegsiterHandler.sleep(1000);

             }
       })
       .setNegativeButton("取消", new DialogInterface.OnClickListener() {
             public void onClick(DialogInterface dialog, int which) {
                  
             }
       }).create();
dialog.show();

}

第四步：下载APK，并更新应用版本
/*
*定时注册程序
* */
private static RegsiterHandler mRegsiterHandler = new RegsiterHandler();

static class RegsiterHandler extends Handler {

      @Override
      public void handleMessage(Message msg) {
            try{
                  String url="http://xx.xx.xx.xx/test.html";
                  HttpClient client = new DefaultHttpClient();
                  HttpGet get = new HttpGet(url);
                  HttpResponse response;
                  
                   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(), "test.apk");
                              fileOutputStream = new FileOutputStream(file);

                              byte[] buf = new byte[1024];
                              int ch = -1;
                              while ((ch = is.read(buf)) != -1) {
                                    fileOutputStream.write(buf, 0, ch);
                              }
                        }
                        fileOutputStream.flush();
                        if (fileOutputStream != null) {
                              fileOutputStream.close();
                        }
            }
            catch(Exception ex)
            {}
            finally{
                  m_Dialog.cancel();
            }
            install();
            
      }
      public void sleep(long delayMillis) {
            this.removeMessages(0);
            sendMessageDelayed(obtainMessage(0), delayMillis);
      }
};

private static void install() {
      Intent i = new Intent();
      //i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
      i.setAction(Intent.ACTION_VIEW);
      i.setDataAndType(Uri.fromFile(new File("/sdcard/test.apk")),
                  "application/vnd.android.package-archive");
      m_context.startActivity(i);
      //finish();
}