UIApperance and various crashes

Question

I'm getting so frustrated while customizing my app. I've already created and styled almost the whole app, including Navigation bar, toolbar, tabBar etc, but everytime a MFMailComposeViewController, a MFMessageComposerViewController, Twitter or Facebook sharers or even a QuickLook View Controller comes in play, the app crashes with the message:

*** Assertion failure in -[UICGColor encodeWithCoder:].
*** Terminating app due to uncaught exception 'NSInternalInconsistencyExceptionì, reason: 'Only RGBA or White color spaces are supported in this situation.'

I've read around that this is because iOS 6 manages the composers as Remote Controllers, but I really haven't any idea how to get a fix to this problem.

I don't want to remove the mail composing features or the message composing features because of this.

Anyone encountered this bug too?

I already have the code wrote. The problem is that UIAppearance is making the app crash because of the custom UINavigationBars elements. Code.

-(void)message{
    if (_progressHUD){
        [_progressHUD hide:YES];
    }
    MFMessageComposeViewController *controller = [[MFMessageComposeViewController alloc] init] ;
    [controller setMessageComposeDelegate:self];

    if([MFMessageComposeViewController canSendText])
    {
        controller.body = descriptionString;
        controller.recipients = nil;
        [self presentViewController:controller animated:YES completion:nil];
    }

}

-(void)messageComposeViewController:(MFMessageComposeViewController *)controller didFinishWithResult:(MessageComposeResult)result{
    [self dismissViewControllerAnimated:YES completion:nil];
}

-(void)email {

    if (_progressHUD){
        [_progressHUD hide:YES];
    }

    MFMailComposeViewController *composer = [[MFMailComposeViewController alloc] init];
    [composer setMailComposeDelegate:self];
    if ([MFMailComposeViewController canSendMail]) {
        [composer setToRecipients:nil];
        [composer setSubject:[NSString stringWithFormat:@"%@",nameString]];

        [composer setMessageBody:[NSString stringWithFormat:@"%@",descriptionString] isHTML:NO];        [composer addAttachmentData:[NSData dataWithContentsOfURL:[NSURL URLWithString:imageString]] mimeType:@"png" fileName:imageString];
        [composer setModalTransitionStyle:UIModalTransitionStyleCoverVertical];
        [self presentViewController:composer animated:YES completion:nil];
    }
}


-(void)mailComposeController:(MFMailComposeViewController *)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error {
    if (error) {
        SIAlertView *alert = [[SIAlertView alloc] initWithTitle:@"Error"
                                                        andMessage:[NSString stringWithFormat:@"Error %@", [error description]]];
        [alert addButtonWithTitle:@"OK" type:SIAlertViewButtonTypeDestructive handler:^(SIAlertView *alertView){}];
        [alert show];
        [self dismissViewControllerAnimated:YES completion:nil];
    }
    else {
        [self dismissViewControllerAnimated:YES completion:nil];
    }
}

Appearance

- (void)customizeAppearance
{
    [[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleLightContent];

    UINavigationBar Appearance
    [[UINavigationBar appearance] setBackgroundImage:[UIImage imageNamed:@"navigationBarBackground"] forBarMetrics:UIBarMetricsDefault];
    [[UINavigationBar appearance] setTintColor:[UIColor whiteColor]];
    [[UINavigationBar appearance] setTitleTextAttributes:
     [NSDictionary dictionaryWithObjectsAndKeys:
      [UIColor whiteColor],
      UITextAttributeTextColor,
      [UIColor colorWithRed:0.0 green:0.0 blue:0.0 alpha:0.0],
      UITextAttributeTextShadowColor,
      [NSValue valueWithUIOffset:UIOffsetMake(0, -1)],
      UITextAttributeTextShadowOffset,
      [UIFont fontWithName:@"HelveticaNeue" size:0.0],
      UITextAttributeFont,
      nil]];

    //ToolBar Appearance
    [[UIToolbar appearance] setTintColor:[UIColor whiteColor]];


    //Switch Appearance
    [[UISwitch appearance] setOnTintColor:[UIColor colorWithPatternImage:[UIImage imageNamed:@"greenBackground"]]];

    //Search Bar Appearance
    [[UISearchBar appearance] setTintColor:[UIColor whiteColor]];

    //Tab Bar Appearance
    [[UITabBar appearance] setBackgroundImage:[UIImage imageNamed:@"tabBarBackground"]];
    [[UITabBar appearance] setTintColor:[UIColor whiteColor]];
    [[UITabBarItem appearance] setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:[UIColor whiteColor], UITextAttributeTextColor, nil] forState:UIControlStateNormal];
    [[UITabBar appearance] setSelectionIndicatorImage:[UIImage imageNamed:@"transparent"]];

}

Answer 1

After various debugging session, I sorted out that the line of code that was giving me those crashes was

//Switch Appearance
[[UISwitch appearance] setOnTintColor:[UIColor colorWithPatternImage:[UIImage imageNamed:@"greenBackground"]]];

So I deleted it and everything was working fine. Apparently, I can't set the appearance directly in the AppDelegate, but I had to do it in the class where the switch was in.

Same thing for the refreshControl appearance: had to set it in the tableView's class.