iOS檢查版本更新

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項目原來的檢查代碼適用於1.2 1.3格式。一般正常的項目格式應該是1.2.2 ，如此大版本.小版本格式。

貼下代碼

-(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:@"發現新版本" message:[releaseInfo objectForKey:@"releaseNotes"] preferredStyle:UIAlertControllerStyleAlert];                UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"暫不" style:UIAlertActionStyleCancel handler:nil];                [alert addAction:cancelAction];                UIAlertAction *sureAction = [UIAlertAction actionWithTitle:@"更新" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {//                    NSURL *url = [NSURL URLWithString:@"https://itunes.apple.com/cn/app/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{    //假如版本號碼1.5.1 如下 這邊需要確定幾位小數，來確定數組個數。    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(@"版本號碼%d",num1);    return num1;}

　　

　　

iOS檢查版本更新