iOS开发检查版本更新的好方法

NSString *url = [[NSString alloc] initWithFormat:@"http://itunes.apple.com/cn/lookup?id=%@",@"934255701"];
 [self Postpath:url];

-(void)Postpath:(NSString *)path
{
    
    NSURL *url = [NSURL URLWithString:path];
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url
                                                           cachePolicy:NSURLRequestReloadIgnoringCacheData
                                                       timeoutInterval:10];
    
    [request setHTTPMethod:@"POST"];
    
    
    NSOperationQueue *queue = [NSOperationQueue new];
    
    [NSURLConnection sendAsynchronousRequest:request queue:queue completionHandler:^(NSURLResponse *response,NSData *data,NSError *error){
        NSMutableDictionary *receiveStatusDic=[[NSMutableDictionary alloc]init];
        if (data) {
            
            NSDictionary *receiveDic = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableLeaves error:nil];
            if ([[receiveDic valueForKey:@"resultCount"] intValue]>0) {
                
                [receiveStatusDic setValue:@"1" forKey:@"status"];
                [receiveStatusDic setValue:[[[receiveDic valueForKey:@"results"] objectAtIndex:0] valueForKey:@"version"]   forKey:@"version"];
            }else{
                
                [receiveStatusDic setValue:@"-1" forKey:@"status"];
            }
        }else{
            [receiveStatusDic setValue:@"-1" forKey:@"status"];
        }
        
        [self performSelectorOnMainThread:@selector(receiveData:) withObject:receiveStatusDic waitUntilDone:NO];
    }];
    
}

-(void)receiveData:(id)sender
{
    NSLog(@"receiveData=%@",sender);
    NSDictionary *infoDictionary = [[NSBundle mainBundle] infoDictionary];
    // app版本
    NSString *app_Version = [infoDictionary objectForKey:@"CFBundleShortVersionString"];
    
    if (![app_Version isEqualToString:[sender objectForKey:@"version"]]) {
        DXAlertView *alert = [[DXAlertView alloc]initWithTitle:@"提示" contentText:[NSString stringWithFormat:@"版本有更新"] leftButtonTitle:@"不更新" rightButtonTitle:@"更新"];
        [alert show];
        alert.rightBlock = ^() {
            NSURL *url = [NSURL URLWithString:@"https://itunes.apple.com/cn/app/tian-mei-yi-dong-kao-qin/id934255701?mt=8"];
            
            [[UIApplication sharedApplication]openURL:url];
        };
    }
    
}