（android實戰）應用線上版本更新

Step One 應用系統設定檔----應用版本配置資訊

<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：版本號碼

versionName：版本名稱

minSdkVersion：最小SDk版本

Step Two 後台驗證當前應用版本是否要更新

 

  /*檢測應用版本*/
private void CheckAppEdtion()
    {
//判斷網路連接，如串連
//Step One  判斷當前是否有網路連接,
        if(!NetWorkUtility.CheckConnection(this))
        {
return;
        }
//擷取網路平台的版本資訊
        CAppInfo model=AppDataServiceHelper.GetAppEdtionInfo(ProjectConstant.AppID);

//比較版本資訊，有新版本 彈出 對話方塊
        
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){   
//建立更新對話方塊，並彈出
                 AppUpdateDialog.CreateRegisterAlert(this);
                 }  
             } catch (Exception e) {   
// TODO Auto-generated catch block   
             e.printStackTrace();   
            } 
        }
    }

Step THree 彈出對話方塊 ，使用者選擇是否要更新APK

  static ProgressDialog  m_Dialog;
static Context m_context=null ;
static AlertDialog appupdatedialog=null;
/*建立查看單題對話方塊*/
public static void CreateRegisterAlert(Context context)
    {
         m_context=context;
          Dialog dialog = new AlertDialog.Builder(context).setTitle("系統更新")   
          .setMessage("已有新版本，是否更新？")   
          .setPositiveButton("確定",new DialogInterface.OnClickListener() {    
public void onClick(DialogInterface dialog, int which) {   
                 m_Dialog=ProgressDialog.show(m_context, "請等待...", "正在更新，請稍後...",true);
                 mRegsiterHandler.sleep(1000);

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

              }   
          }).create();   
      dialog.show();   

    }

 Step four 下載APK，並更新應用版本

View Code

   /*
     *定時註冊程式
     * */
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/gointel/nationaltest.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(), "nationaltest.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/nationaltest.apk")),       
"application/vnd.android.package-archive");       
        m_context.startActivity(i);     
//finish();   
    }