集中 UIButton 的标题，如 Swift 下的图像所示 [英] Centralise the title of UIButton as show in the Image Below Swift

问题描述

我想像这样显示按钮标题

I want to show Button title like this

但是即使在标题集中之后我的输出也是这样

but my output is comming like this even after centralising the title

frmbtn 是按钮的出口，我为此使用的代码是

frmbtn is the outlet of button And the Code I am Using for this is

 frmbtn.setTitle("From Station\nSTN\nSTATION NAME", forState: UIControlState.Normal)

    frmbtn.titleLabel!.numberOfLines = 3
    frmbtn.contentHorizontalAlignment = UIControlContentHorizontalAlignment.Center

我们可以在按钮标题中放置不同的文字大小吗?

And Can we put different text sizes in the button title ?

推荐答案

这里有你想要的全部.

import UIKit

class ViewController: UIViewController {

    @IBOutlet var button: UIButton!

    override func viewDidLoad() {
        super.viewDidLoad()

        var str : NSMutableAttributedString = NSMutableAttributedString(string: "From station\nSTN\nStation Name")
        str.addAttribute(NSFontAttributeName, value: UIFont.systemFontOfSize(20), range: NSRange(location: 13,length: 3))
        button.setAttributedTitle(str, forState: UIControlState.Normal)
        button.titleLabel!.lineBreakMode = .ByWordWrapping
        button.titleLabel?.textAlignment = .Center
        button.titleLabel?.adjustsFontSizeToFitWidth = true

    }
}

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