［已解决］UISegmentControl中设置setTitleTextAttributes没效果

折腾：

［已解决］swift实现左右切换的分段可点击的按钮选项

期间，用代码：

    let actionList:[String] = ["登录", "注册"]

    var switchActionSegment:UISegmentedControl

        self.switchActionSegment = UISegmentedControl(items: actionList)

        self.switchActionSegment.backgroundColor = AppMainColor

        self.switchActionSegment.setTitleTextAttributes(["NSFontAttributeName" : UIFont.systemFontOfSize(20), "NSForegroundColorAttributeName" : UIColor.whiteColor()], forState: UIControlState.Normal)

但是文字没有生效：

文字还是很小，颜色也不是白色

uisegmentedcontrol setTitleTextAttributes not work

ios – UISegmentedControl setTitleTextAttributes does not work – Stack Overflow

换成：

UISegmentedControl.appearance().setTitleTextAttributes(["NSFontAttributeName" : UIFont.systemFontOfSize(20), "NSForegroundColorAttributeName" : UIColor.whiteColor()], forState: UIControlState.Normal)

没用。

ios – UISegmentedControl setTitleTextAttributes:forState: not working well with font – Stack Overflow

UITextAttributes font not working for UISegmentedControl selected state – Xamarin Forums

uisegmentedcontrol settitletextattributes not working

uisegmentedcontrol settitletextattributes

How can I change the text color of a segmented control in Swift?

iphone – How to change font color of UISegmentedControl – Stack Overflow

ios – UISegmentedControl only changes text color when revisiting ViewController – Stack Overflow

最终才发现，是自己写错了，把：

NSFontAttributeName

写成了：

“NSFontAttributeName” 

所以改为：

        self.switchActionSegment.setTitleTextAttributes([NSFontAttributeName : UIFont.systemFontOfSize(20), NSForegroundColorAttributeName : UIColor.whiteColor()], forState: UIControlState.Normal)

        self.switchActionSegment.setTitleTextAttributes([NSForegroundColorAttributeName : UIColor.redColor()], forState: UIControlState.Selected)

即可生效：

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