Different in Xcode 11

1. didRegisterForRemoteNotificationsWithDeviceToken

- (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken {
    if (@available(iOS 13.0, *)) {  
        NSString *token = [self stringFromDeviceToken:deviceToken];
        NSLog(@"asdaa token: %@",token);
    } else {
        NSString *token = [[NSString stringWithFormat:@"%@",  deviceToken] tokenString];
        NSLog(@"asdaa token: %@",token);
    }
}
- (NSString *)stringFromDeviceToken:(NSData *)deviceToken {
    NSUInteger length = deviceToken.length;
    if (length == 0) {
        return nil;
    }
    const unsigned char *buffer = deviceToken.bytes;
    NSMutableString *hexString  = [NSMutableString  stringWithCapacity:(length * 2)];
    for (int i = 0; i < length; ++i) {
        [hexString appendFormat:@"%02x", buffer[i]];
    }
    return [hexString copy];
}

2. Disable new Present style

@implementation UIViewController (Utilities)

void Swizzle(Class c, SEL orig, SEL new)
{
    Method origMethod = class_getInstanceMethod(c, orig);
    Method newMethod = class_getInstanceMethod(c, new);
    if(class_addMethod(c, orig, method_getImplementation(newMethod), method_getTypeEncoding(newMethod))) {
        class_replaceMethod(c, new,
method_getImplementation(origMethod), method_getTypeEncoding(origMethod));
    } else {
    method_exchangeImplementations(origMethod, newMethod);
    }
}
+ (void)load
{
    SEL autoPresent = @selector(presentViewController:animated:completion:);
    SEL fullPresent = @selector(swizzledPresent:animated:completion:);
    Swizzle(NSClassFromString(@"UIViewController"), autoPresent, fullPresent);
}
- (void)swizzledPresent:(UIViewController *)viewControllerToPresent animated: (BOOL)flag completion:(void (^ __nullable)(void))completion API_AVAILABLE(ios(5.0)) {
if (@available(iOS 13.0, *)) {
    if (viewControllerToPresent.modalPresentationStyle ==    
        UIModalPresentationPageSheet ||   
        viewControllerToPresent.modalPresentationStyle ==  
        UIModalPresentationAutomatic) {
            viewControllerToPresent.modalPresentationStyle =  
            UIModalPresentationFullScreen;
    }
}
[self swizzledPresent:viewControllerToPresent animated:flag completion:completion];
}

3. Disable Dark mode

if (@available(iOS 13.0, *)) {
    UIWindow *window = [[[UIApplication sharedApplication] delegate] window];
    window.overrideUserInterfaceStyle = UIUserInterfaceStyleLight;
}