UILabel在iOS模拟器中显示，但未运行后在设备上运行.IPA应用程序

Question

“iLabel”在模拟器中显示，但是一旦存档并且IPA文件运行，它将无法显示。我试着清理代码，但是没有做任何事情。 iLabel的想法是显示UIIndicator什么时候动画，当指标消失时，当然会消失。

- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 

    [[self myTableView] setDelegate:self]; 
    [[self myTableView] setDataSource:self]; 
    array = [[NSMutableArray alloc] init]; 

    [self startActivity]; 
} 

-(void)startActivity 
{ 
    indicator.hidden=NO; 
    [indicator startAnimating]; 

    [self uploadData]; 
    NSLog(@"VIEWDIDLOAD-INDICATOR-TURNING-ON: %@", indicator); 
} 

-(void)uploadData 
{ 
    NSLog(@"Uploading..."); 

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(checkForReachability) name:kReachabilityChangedNotification object:nil]; 

    Reachability *reachability = [Reachability reachabilityForInternetConnection]; 
    [reachability startNotifier]; 

    NetworkStatus remoteHostStatus = [reachability currentReachabilityStatus]; 

    if(remoteHostStatus == NotReachable) 
    { 
    UIAlertView *alert = [[UIAlertView alloc] 
          initWithTitle: @"Oops..." 
          message: @"Network connection lost." 
          delegate: nil 
          cancelButtonTitle:@"OK" 
          otherButtonTitles:nil]; 
    [alert show]; } 

    else if (remoteHostStatus == ReachableViaWiFi) 
    { 
    iLabel.text = @"Please be patient..."; 
    } 
} 


- (void) connectionDidFinishLoading:(NSURLConnection *)connection 
{ 
    [self setString]; 

    NSDictionary *dic = [NSJSONSerialization JSONObjectWithData:responseData options:0 error:nil]; 
    NSString *string1 = [dic objectForKey:@"name"]; 
    NSString *string7 = [dic objectForKey:@"review_count"]; 
    NSString *string3 = [dic objectForKey:@"display_phone"]; 
    NSDictionary *location = [dic objectForKey:@"location"]; 
    NSArray *array2 = [location objectForKey:@"display_address"]; 
    NSDictionary *coordinate = [location objectForKey:@"coordinate"]; 

    lat = [coordinate objectForKey:@"latitude"]; 
    lon = [coordinate objectForKey:@"longitude"]; 
    mURL = [dic objectForKey:@"mobile_url"]; 

    NSString *string4 = [array2 objectAtIndex:0]; 
    NSString *string5 = [array2 objectAtIndex:1]; 
    NSString *img2String = [dic objectForKey:@"image_url"]; 

for (NSDictionary *diction in dic) 
{ 
    NSString *string6 = [NSString stringWithFormat:@"Yelp Rating:     "]; 
    NSString *string8 = [NSString stringWithFormat:@"Based on %@ Review(s)", string7]; 

    [array addObject:string1]; 
    [array addObject:string6]; 
    [array addObject:string8]; 
    [array addObject:string3]; 
    [array addObject:string4]; 
    [array addObject:string5]; 

    UIImage *image = [UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:img2String]]]; 
    imageView.image = image; 
    } 

    for (NSDictionary *diction in coordinate) 
    { 
    [array addObject:lat]; 
    [array addObject:lon]; 
    } 

    [[self myTableView] reloadData]; 

    [indicator stopAnimating]; 
    indicator.hidden=YES; 
    [indicator removeFromSuperview]; 

    iLabel.text = @""; 
    [iLabel removeFromSuperview]; 
} 

Answer 1

不知道为什么我没有赶上它。问题是在以下几点：

if(remoteHostStatus == NotReachable) 
    { 
     UIAlertView *alert = [[UIAlertView alloc] 
          initWithTitle: @"Oops..." 
          message: @"Network connection lost." 
          delegate: nil 
          cancelButtonTitle:@"OK" 
          otherButtonTitles:nil]; 
     [alert show]; } 

    else if (remoteHostStatus == ReachableViaWiFi) 
    { 
     ilabel.text = @"Please be patient..."; 
    } 

我改变了底部到：

else 
    { 
     ilabel.text = @"Please be patient..."; 
    } 

...一切现在是好去。

Answer 2

通过你发布的代码来看，如果远程主机不可达，你从未设置的iLabel文本。因此，如果标签未显示在设备上，请在设置标签时检查设备是否可以访问远程主机。