呈现的UINavigationController色彩不变

Question

    MyVC *vc = [[MyVC alloc] init];
vc.delegate = self;

UINavigationController *nc = [[UINavigationController alloc] initWithRootViewController:vc];
[nc.navigationBar setTintColor:[UIColor redColor]];
[self presentViewController:nc animated:true completion:^{}];

The navigation bar is black. I present this from a navigation controller inside a tab bar controller which is created in my App Delegate. In my ApplicationDidFinishLaunchingWithOptions, I can control the color of the navigation controllers there.

Why is this navigation controller tint bar black?

Answer 1

[[UINavigationBar appearance] setTintColor:[UIColor redColor]];

I would suggest you to use this if all of your NavigationBars are the same color. Appearance property of an object sets uniformity on the function you apply on it.

Answer 2

• You can try to make custom class for UINavigationBar

.h

@interface CustomUINavigationBar : UINavigationBar {

}

@end

.m

@implementation CustomUINavigationBar

- (void)drawRect:(CGRect)rect {

    UIColor *color = [UIColor colorWithRed:0.023 green:0.14 blue:0.478 alpha:1];// for example
    self.tintColor = color;

}

@end

Also you can try to insert the below code in the didFinishLaunchingWithOptions: of AppDelegate.m

[[UINavigationBar appearance] setBarTintColor:[UIColor redColor]];

Answer 3

In iOS7 you have to use barTintColor property

[nc.navigationBar setBarTintColor:[UIColor redColor]];

instead of

[nc.navigationBar setTintColor:[UIColor redColor]];