Crash when use UIWebview on iPad and iPhone running iOS 10.0 on Wi-Fi connected to an IPv6 network

Question

Iphone app rejected because of the the reason that “We discovered one or more bugs in your app when reviewed on iPad and iPhone running iOS 10.0 on Wi-Fi connected to an IPv6 network.” Anyone can help to solve it?

First time when my application load. It need to push notification to server:

- (void)application:(UIApplication*)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData*)deviceToken{

     NSString *token = [[deviceToken description] stringByTrimmingCharactersInSet:[NSCharacterSet characterSetWithCharactersInString:@"<>"]];
     token = [token stringByReplacingOccurrencesOfString:@" " withString:@""];
     NSLog(@"Device token is: %@", token);

     NSString *globalToken = [Util objectForKey:@"globalToken"];
     if (globalToken) {
          if ([token isEqualToString:globalToken]) {
               return;
          }
     }

     [Util setObject:token forKey:@"globalToken"];

     NSString *urlString = [NSString stringWithFormat:@"http://api.xosovietnam.vn/ApiPushDevices/save?secret=06btF1Q&platform=IOS&token=%@", token ];
     NSLog(@"%@", urlString);

     NSURLSessionConfiguration *conf = [NSURLSessionConfiguration defaultSessionConfiguration];
     NSURLSession *session = [NSURLSession sessionWithConfiguration:conf];

     NSURL *URL = [NSURL URLWithString:urlString];
     NSURLRequest *urlRequest = [NSURLRequest requestWithURL:URL];

     NSURLSessionDataTask *dataTask = [session dataTaskWithRequest:urlRequest completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {

          ResponseObject *responseObj = [[ResponseObject alloc] init];

          if (!error) {
               NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse*)response;
               if (httpResponse.statusCode == 200) {
                    NSLog(@"Success Push Token.");


               }
          }else{
               responseObj.error = error;

               dispatch_async(dispatch_get_main_queue(), ^{

                    if (error.code == -1009 || error.code == -1004 || error.code == -1003 || error.code == -1005) {
                         NSLog(@"The Internet connection appears to be offline.");
                         UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"" message:@"Để sử dụng app cần có mạng internet" delegate:nil cancelButtonTitle:@"Huỷ" otherButtonTitles: nil];
                         [alert show];

                    }else{
                         UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"" message:[NSString stringWithFormat:@"%@", error.localizedDescription] delegate:nil cancelButtonTitle:@"Huỷ" otherButtonTitles: nil];
                         [alert show];
                    }

                    return ;

               });
          }
     }];

     [dataTask resume];
}

After that. I create an UIWebview to load my website:

- (void)viewDidLoad {
     [super viewDidLoad];

     self.automaticallyAdjustsScrollViewInsets = NO;

     if ([self.myWebView respondsToSelector:@selector(setKeyboardDisplayRequiresUserAction:)]) {
          self.myWebView.keyboardDisplayRequiresUserAction = NO;
     }

     NSURLRequest *req = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://xosovietnam.vn/"]];
     [self.myWebView loadRequest:req];

}

Someone can help me please. This is second time I get reject when I subit my application.

Answer 1

From your code there are two things to consider.

1) UIWebView is deprecated. WKWebView is recommended by Apple.

2) You are loading an HTTP request. If you are using Xcode 8, I think you may need to add some exceptions for WKWebView. "NSAllowArbitraryLoad" is still not enough.