如果我更改UITextField的外观，UIBarButtomItem tintColor无法正常工作

Question

我有一个UIBarButtonItem的实例 我想将UIBarButtonItem的tintColor更改为orangeColor 我还在Appdelegate中将UITextField的外观更改为orangeColor。

// some view controller
UIBarButtonItem *barButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"Done" style:UIBarButtonItemStylePlain target:nil action:nil];

[barButtonItem setTintColor:[KLStyle colorTitleOrangle]];


// Appdelegate.h
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    [[UITextField appearance] setTintColor:[UIColor orangeColor]];
}

如果我不评论[[UITextField appearance] setTintColor:[UIColor orangeColor]];则会出现问题，UIBarButtonItem的tintColor将出错。它仍然是默认的tintColor blue。

如果我发表评论，UIBarButtonItem的tintColor将是正确的。

有人知道为什么会这样吗？

感谢您的帮助！

Answer 1

解决方法：

[[UITextField appearanceWhenContainedIn:[UISearchBar class], nil] setTintColor: [UIColor lightGrayColor]];
[[UIBarButtonItem appearanceWhenContainedIn:[UISearchBar class], nil] setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:
                                                                                              [UIColor colorWithRed:24.0/255 green:75.0/255 blue:152.0/255 alpha:1],
                                                                                              NSForegroundColorAttributeName,
                                                                                              [UIColor grayColor],
                                                                                              NSForegroundColorAttributeName,
                                                                                              [NSValue valueWithUIOffset:UIOffsetMake(0, 1)],
                                                                                              NSForegroundColorAttributeName,
                                                                                              nil]
                                                                                              forState:UIControlStateNormal];
[[UIBarButtonItem appearanceWhenContainedIn:[UISearchBar class], nil] setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:
                                                                                              [UIColor grayColor],
                                                                                              NSForegroundColorAttributeName,
                                                                                              [UIColor grayColor],
                                                                                              NSForegroundColorAttributeName,
                                                                                              [NSValue valueWithUIOffset:UIOffsetMake(0, 1)],
                                                                                              NSForegroundColorAttributeName,
                                                                                              nil]
                                                                                       forState:UIControlStateDisabled];