如何使用 iOS WatchKit 将 WKInterfaceButton 的标题文本居中

Question

我试过这个：

[myWKButton.titleLabel setTextAlignment: NSTextAlignmentCenter];

我收到错误：

property titlelabel not found on object of type wkinterfacebutton

我怎样才能做到这一点？

Answer 1

WKInterfaceButton class 没有 titleLabel 属性，这就是您收到此错误的原因。要设置标题的对齐方式，使用它的attributedTitle 属性.

NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];
paragraphStyle.alignment = NSTextAlignmentCenter;

NSAttributedString *attributedString = [[NSAttributedString alloc] initWithString:yourTitle attributes:@{NSParagraphStyleAttributeName: paragraphStyle}];
[myWKButton setAttributedTitle:attributedString];