ios - UIBarButtonItem style plain change font

Question

Changing the

NSDictionary * barButtonAppearanceDict = @{UITextAttributeFont : font};
    [[UIBarButtonItem appearance] setTitleTextAttributes:barButtonAppearanceDict forState:UIControlStateNormal];

Doesn't affect the UIBarButtonItem when using plain...

How can i change the font for the plain style UIBarButtonItem

This still applies to iOS6

Answer 1

但是，这对我有用（使用普通的 BarButtonItem），刚刚对其进行了测试：

[self.myBarButtonItem setTitleTextAttributes:
 [NSDictionary dictionaryWithObjectsAndKeys:
  [UIFont fontWithName:@"Helvetica" size:22.0],NSFontAttributeName,
  nil]forState:UIControlStateNormal];

对于使用外观代理，您可以尝试以下操作：

 NSDictionary *attrDict = [NSDictionary dictionaryWithObject: [UIFont fontWithName:@"Helvetica" size:22.0] forKey: UITextAttributeFont];

[[UIBarButtonItem appearance] setTitleTextAttributes: attrDict
                                        forState: UIControlStateDisabled];
[[UIBarButtonItem appearance] setTitleTextAttributes: attrDict
                                        forState: UIControlStateNormal];

你确定你在你的AppDelegate课堂上实现了这个吗？（例如 indidFinishLaunchingWithOptions方法）

Answer 2

我在 appdelegate 中设置了以下内容，效果很好：

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

    [[UIBarButtonItem appearance] setTitleTextAttributes:@{NSFontAttributeName : [UIFont fontWithName:@"Avenir" size:21.0]} forState:UIControlStateNormal];

}