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iOS Implementing Designs for iPhone Customizing Table View Controllers Styling the Tab Bar

Devin Scheu
Devin Scheu
66,191 Points

IOS Help

Question: Using the UITabBarItem's appearance proxy, set the text color for both selected and unselected tabs. Hint: use the 'setTitleTextAttributes:forState' method with the NSDictionary provided and 'UIControlStateNormal' as as the state parameter.

I'm so stuck on this one.

Code:

AppDelegate.m
#import "AppDelegate.h"

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Customize the nav bar
    UIImage *backgroundImage = [UIImage imageNamed:@"navBarBackground"];
    [[UINavigationBar appearance] setBarTintColor:[UIColor redColor]];
    [[UINavigationBar appearance] setBackgroundImage:backgroundImage forBarMetrics:UIBarMetricsDefault];
    [[UINavigationBar appearance] setTintColor:[UIColor whiteColor]];

    // Customize the tab bar
    NSDictionary *titleTextAttributes = [[NSDictionary dictionaryWithObjectsAndKeys:[UIColor whiteColor], UITextAttributeTextColor, nil
    ] forState: UIControllStateNormal];
    return YES;
}

@end

2 Answers

cm21
cm21
150,854 Points

Hi there. I'll give you a walkthrough of how I perceive this challenge:

You'll want to write a new statement, with the specific intent of utilizing the appearance proxy (for an example of how to utilize the appearance proxy on UITabBarItem, you might want to check out around 2:15 into the video for this objective.) My hunch is that the 'with the NSDictionary provided' part of the challenge instructions is what threw you off: we are not changing the declaration statement itself of that dictionary, but we will be doing some setting...

Next up, the challenge asks us to consider the 'setTitleTextAttributes:forState' method, and use 'UIControlStateNormal' as the parameter of this state. For an example of how to use this method and specify the state parameter, consider the following:

[[UITabBarItem appearance] setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:[UIColor whiteColor], UITextAttributeTextColor, nil] forState:UIControlStateNormal];

Hope this helps.