我试图弄清楚如何使用StackOverflow来做到这一点,并走了很远:
[self.navController.navigationBar setTitleTextAttributes:@{NSForegroundColorAttributeName: [UIColor whiteColor], NSFontAttributeName: [UIFont.systemFontSize:17 weight: UIFontWeightSemibold]}];
不幸的是,我在显示UIFont.systemFontSize
的{{1}}下划线时遇到错误。
我如何调整代码以使其起作用?
答案 0 :(得分:1)
您的语法已关闭
+ (UIFont *)systemFontOfSize:(CGFloat)fontSize weight:(UIFontWeight)weight NS_AVAILABLE_IOS(8_2);
https://developer.apple.com/documentation/uikit/uifont/1619027-systemfontofsize?language=objc
您想在UIFont.systemFontSize
处删除句点,而改用UIFont systemFontOfSize:weight:
设置属性时,与其尝试将所有内容都内联,不如将其分离出来有时是有帮助的:
UIColor *whiteColor = [UIColor whiteColor];
UIFont *navBarTitleFont = [UIFont systemFontOfSize:17.0f weight:UIFontWeightSemibold];
[self.navigationController.navigationBar setTitleTextAttributes:@{
NSForegroundColorAttributeName: whiteColor,
NSFontAttributeName: navBarTitleFont
}];