IOS Version Auto-update

appdelegate.h-  (BOOL) Application: (uiapplication *) Application didfinishlaunchingwithoptions: ( nsdictionary *) launchoptions {   [self  editionupdate];} Version Automatic Update-(void) editionupdate{   nsstring * [email protected] "192.168 ..."; /Get the Backend interface    //    nsstring * url=[nsstring stringwithformat:@ " //Get App store interface//Use synchronous request to parse data     nsmutableurlrequest *request=[[ Nsmutableurlrequest alloc]init];    [request seturl:[nsurl urlwithstring: Url]];    nsdata *returndata=[nsurlconnection sendsynchronousrequest:request  returningresponse:nil error:nil];    nsdictionary *jsondata=[ nsjsonserialization jsonobjectwithdata:returndata options:0 error:nil ];     nsstring *updateversion=[jsondata objectforkey:@ ' version '];//version number     _updateurl=[jsondata objectforkey:@ "Trackviewurl"];//         //get the current version of the app     nsstring *version =  [[[nsbundle mainbundle] infodictionary] objectforkey:@ "CFBundleShortVersionString"];         //to double type     double currentversion =[version doublevalue];    double updaversion=[updateversion doublevalue];         if  (currentversion<updaversion)  {         uialertview *alert=[[uialertview alloc]initwithtitle:@ "Tips"   message:@ "A new version can be updated"  delegate:self cancelbuttontitle:@ "Cancel"  otherbuttontitles:@ "Upgrade", nil];         [alert show];                  }}//alertview delegate -(void) Alertview: (uialertview *) AlertView  clickedbuttonatindex: (Nsinteger) buttonindex{    if  (buttonIndex==1)  {    //  Open the app in AppStore by getting to the URL and jump to the app download page         [[ uiapplication sharedapplication]openurl:[nsurl urlwithstring:_updateurl]];    }}

IOS Version Auto-update