iOS Check for version updates

The original check code for the project applies to the 1.2 1.3 format. The general normal project format should be 1.2.2, so large version. Small version format.

Paste the code

-(void) oncheckversion{dispatch_queue_t queue = dispatch_get_global_queue (Dispatch_queue_priority_default, 0);        Dispatch_async (queue, ^{nsdictionary *infodic = [[NSBundle mainbundle] infodictionary];        NSString *currentversion = [infodic objectforkey:@ "cfbundleshortversionstring"];        NSString *url = @ "Http://itunes.apple.com/lookup?id=xxx";        Nsmutableurlrequest *request = [[Nsmutableurlrequest alloc] init];        [Request Seturl:[nsurl Urlwithstring:url];        [Request sethttpmethod:@ "POST"];        Nshttpurlresponse *urlresponse = nil;        Nserror *error = nil; NSData *recerveddata = [nsurlconnection sendsynchronousrequest:request returningresponse:&urlresponse Error:        &error]; NSString *results = [[nsstring alloc] initwithbytes:[recerveddata bytes] length:[recerveddata length] Encoding:        Nsutf8stringencoding]; Nsdictionary *dic = [nsjsonserialization jsonobjectwithdata:[results datausingencoding:nsutf8stringencoding] OptioNs:kniloptions Error:nil];        Nsarray *infoarray = [dic objectforkey:@ "Results"];            if ([Infoarray count]) {nsdictionary *releaseinfo = [Infoarray objectatindex:0];            NSString *lastversion = [releaseinfo objectforkey:@ "version"];  if ([self versionnumberconversion:lastversion] >[self versionnumberconversion:currentversion]) {alert = [Uialertcontroller alertcontrollerwithtitle:@ "discover new version" Message:[releaseinfo objectforkey:@ "ReleaseNotes"]                Preferredstyle:uialertcontrollerstylealert];                Uialertaction *cancelaction = [uialertaction actionwithtitle:@ "temporarily not" style:uialertactionstylecancel Handler:nil];                [Alert addaction:cancelaction]; Uialertaction *sureaction = [uialertaction actionwithtitle:@ "Update" Style:uialertactionstyledefault handler:^ ( Uialertaction * _nonnull action) {//Nsurl *url = [Nsurl urlwithstring:@] Https://itunes.apple.com/cn/ap      P/xxname/idxxx?l=en&mt=8 "];              Nsurl *url = [Nsurl urlwithstring:@ "itms-apps://itunes.apple.com/cn/app/xxname/idxxx?mt=8"];                [[UIApplication Sharedapplication]openurl:url];                }];                [Alert addaction:sureaction]; Dispatch_async (Dispatch_get_main_queue (), ^{[self presentviewcontroller:alert animated:yes completion                : nil];            }); }        }    });}

-(int) Versionnumberconversion: (nsstring*) version{    //If the version number 1.5.1 the following side need to determine several decimals, to determine the number of arrays.    int num1 = 0;    Nsarray *ary = [version componentsseparatedbystring:@ "];    if (Ary.count) {for        (int i = 0; i<ary.count; i++) {            if (i==0) {                NUM1 = [ary[0] intvalue]*10000;            } else if (i==1) {                NUM1 = [ary[0] intvalue]*10000+[ary[1] intvalue]*100;            } else if (i==2) {                NUM1 = [ary[0] intvalue]*10000+[ary[1] intvalue]*100+[ary[2] intvalue];            } else if (i>=3) {                NUM1 = [ary[0] intvalue]*10000+[ary[1] intvalue]*100+[ary[2] intvalue];}}    //nslog (@ "version number%d", NUM1);    return NUM1;}

　　

　　

iOS Check for version updates