如何在UIBarButtonItem上设置字体大小？ [英] How do you set the font size on a UIBarButtonItem?

问题描述

我找不到在自定义UIBarButtonItem中设置标题字体大小的方法。我能想到解决这个问题的唯一方法是将其设置为我想避免的图像。还有其他建议吗？

I can't find a way to set the font size of the title in a custom UIBarButtonItem. The only way I can think of getting around this is to set it as an image which I would like to avoid. Any other suggestions?

推荐答案

简单来说，只需：

Objective-C ：

Objective-C:

NSUInteger fontSize = 20;
UIFont *font = [UIFont boldSystemFontOfSize:fontSize];
NSDictionary *attributes = @{NSFontAttributeName: font};

UIBarButtonItem *item = [[UIBarButtonItem alloc] init];

[item setTitle:@"Some Text"];
[item setTitleTextAttributes:attributes forState:UIControlStateNormal];

self.navigationItem.rightBarButtonItem = item;

Swift：

let fontSize:CGFloat = 20;
let font:UIFont = UIFont.boldSystemFont(ofSize: fontSize);
let attributes:[String : Any] = [NSFontAttributeName: font];

let item = UIBarButtonItem.init();

item.title = "Some Text";
item.setTitleTextAttributes(attributes, for: UIControlState.normal);

self.navigationItem.rightBarButtonItem = item;

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