UIButton 标题标签的不同大小的字符串

Question

我正在尝试将按钮操作的标题置于警报中，如下所示

按钮中的示例字符串：

let formattedString = NSMutableAttributedString()
            formattedString.append(NSAttributedString(string: "Text is small" ,
                                                      attributes: [NSAttributedStringKey.font: UIFont.systemFont(ofSize: 8.0)]))
            formattedString.append(NSAttributedString(string: "Text is large"))

在 UIAlertcontroller 操作 UIButton

.addAction(action: AABlurAlertAction(title: formattedString, style: AABlurActionStyle.modern)

但它拒绝接受NSMutableAttributedString传递给 title 参数

抛出错误

Cannot convert value of type 'NSMutableAttributedString' to expected argument type 'String?'

Answer 1

尝试setAttributedTitle()而不是setTitle()

button.setAttributedTitle(formattedString, for: .normal)

Answer 2

您只需要更改 AABlurAlertAction 类中的一些代码

self.setTitle(title, for: UIControlState.normal) 

将其替换为

self.setAttributedTitle(title, for: UIControlState.normal)

并替换

public init(title: String?, style: AABlurActionStyle, handler: ((AABlurAlertAction) -> Void)?) {

和

public init(title: NSAttributedString?, style: AABlurActionStyle, handler: ((AABlurAlertAction) -> Void)?) {