Android APK online Upgrade

Now Android development, generally adopt CS mode, then APK upgrade, naturally need to have server side support. In general, we put the upgraded version and a configuration file that records the upgraded version (in the Jsonarray format in this article) on the server side. When client initializes, if the server side is detected with an updated version (read the configuration file of the server), the upgrade version on the server side is connected in HTTP, downloaded, and then called the Android API to replace the upgrade.

One, the configuration file:

Update_version.json

[{"appname":"myapp","apkname" :"myapp.apk","vername":1.0,"  vercode":1}]

The version comparison is based on the version number defined in the Vercode in Update_version.json and the Androidmanifest.xml file in the apk file:

Android:versioncode="1"android:versionname="1.0" 

Second, the version of the comparison when initializing

//Compare Server versions//called in the OnCreate functionif(Getserververcode ()) {intVercode = Config.getvercode ( This); if(Newvercode >Vercode) {donewversionupdate ();//new version updates found}Else{Toast.maketext (Getapplicationcontext (),"currently the latest version, thanks for your support", Toast.length_long). Show ();//no new version    }}//child function, get version number PrivateBoolean Getserververcode () {Try {        //get server address and interface file nameString Verjson =networktool.getcontent (Config.update_server+Config.update_verjson); Jsonarray Array=NewJsonarray (Verjson); if(Array.Length () >0) {Jsonobject obj= Array.getjsonobject (0); Try{Newvercode= Integer.parseint (Obj.getstring ("Vercode")); Newvername= Obj.getstring ("Vername"); } Catch(Exception e) {Newvercode= -1; Newvername=""; return false; }        }    } Catch(Exception e) {log.e (TAG, E.getmessage ()); return false; }    return true;} //child function, if there is a new version, the Private voiddonewversionupdate () {intVercode = Config.getvercode ( This); String Vername= Config.getvername ( This); StringBuffer SB=NewStringBuffer (); Sb.append ("Current Version:");    Sb.append (Vername); Sb.append ("Code:");    Sb.append (Vercode); Sb.append (", new versions found");    Sb.append (Newvername); Sb.append ("Code:");    Sb.append (Newvercode); Sb.append (", is it updated?"); Dialog Dialog=NewAlertdialog.builder (updateactivity. This). Settitle ("Software Updates"). Setmessage (Sb.tostring ())//Set Content. Setpositivebutton ("Update",//Set OK button                    NewDialoginterface.onclicklistener () {@Override Public voidOnClick (Dialoginterface dialog,intwhich) {PBar=NewProgressDialog (updateactivity. This); Pbar.settitle ("is downloading"); Pbar.setmessage ("Please wait ...");                            Pbar.setprogressstyle (Progressdialog.style_spinner); Downfile (Config.update_server+config.update_apkname); }}). Setnegativebutton ("not updated at this stage",                    NewDialoginterface.onclicklistener () { Public voidOnClick (Dialoginterface dialog,intWhichbutton) {                            //exit the program after clicking the "Cancel" buttonfinish (); }}). Create ();//Create//Show dialog Boxdialog.show ();}

Third, download and upgrade

23456789Ten One A - - the - - - + - + A at - - - - - in - to + - the * $Panax Notoginseng - the + A the + - $ $ - - the -Wuyi the - Wu - About $ - - - A + the - $voiddownfile (final String URL) {pbar.show (); NewThread () { Public voidrun () {HttpClient client=Newdefaulthttpclient (); HttpGetGet=Newhttpget (URL);            HttpResponse response; Try{Response= Client.execute (Get); Httpentity Entity=response.getentity (); LongLength =entity.getcontentlength (); InputStream is=entity.getcontent (); FileOutputStream FileOutputStream=NULL; if( is!=NULL) {File file=NewFile (Environment.getexternalstoragedirectory (), Config.update_                    Savename); FileOutputStream=Newfileoutputstream (file); byte[] buf =New byte[1024x768]; intCH =-1; intCount =0;  while(ch = is. Read (BUF))! =-1) {fileoutputstream.write (buf,0, CH); Count+=ch; if(Length >0) {}}} Fileoutputstream.flush (); if(FileOutputStream! =NULL) {fileoutputstream.close ();            } down (); } Catch(clientprotocolexception e) {e.printstacktrace (); } Catch(IOException e) {e.printstacktrace (); }}}.start (); } voidDown () {Handler.post (NewRunnable () { Public voidrun () {pbar.cancel ();        Update (); }    }); } voidUpdate () {Intent Intent=NewIntent (Intent.action_view); Intent.setdataandtype (Uri.fromfile (NewFile (Environment. getExternalStorageDirectory (), config.update_savename)),"application/vnd.android.package-archive"); StartActivity (intent);}

Reference: http://www.cnblogs.com/Amandaliu/archive/2011/08/22/2148936.html

Android APK online Upgrade