UISegmentedControl文本有多行 [英] UISegmentedControl text with multiple lines

问题描述

是否有可能在iOs 9 +中使用多行文本制作UISegmentedControl？

Is there any possibility to make UISegmentedControl with multiple lines of text in iOs 9+?

到目前为止我已尝试过：

So far i've tryed:

1. 来自SO主题的变体：
   这， 这个 这一个



2. 制作扩展名：

1. Variants from SO topics: This, this and this one

2. Make an extension:

extension UISegmentedControl
{
    func makeMultiline(numberOfLines: Int)
    {
        for segment in self.subviews
        {
            let labels = segment.subviews.filter { $0 is UILabel }  // [AnyObject]
            labels.map { ($0 as UILabel).numberOfLines = numberOfLines }    
        }
    }
}

继承自UISegmentedControl并在Identity Inspector中将新类设置为SegmentedControl

Inherit from UISegmentedControl and set new class to SegmentedControl in Identity Inspector

class MultilineSegmentedControl: UISegmentedControl
{
    override func didMoveToSuperview()
    {
        for segment in subviews
        {
            for subview in segment.subviews
            {
                if let segmentLabel = subview as? UILabel
                {
                    segmentLabel.numberOfLines = 2
                }
            }
        }
    }
}

使用文本而不是标题设置图像并更改UISegmentedControl的框架

Set image with text instead of title and change frame of UISegmentedControl in

viewDidLayoutSubviews()

方法。它使UISegmentedControl高度变大，但是图像保持高度，好像UISegmentedControl没有放大，并且在第一次交互时UISegmentedControl缩小到它的默认高度。

method. It makes UISegmentedControl height larger, but image keeps it's height as if UISegmentedControl didn't enlarge and on first interaction UISegmentedControl shrinks to it's default height.

推荐答案

也许它有点晚了但是这是我的子类来解决swift 3中的这个问题：

Maybe it's a bit late but here is my subclass to resolve this problem in swift 3 :

@IBDesignable class MySegmentedControl: UISegmentedControl {

    @IBInspectable var height: CGFloat = 29 {
        didSet {
            let centerSave = center
            frame = CGRect(x: frame.minX, y: frame.minY, width: frame.width, height: height)
            center = centerSave
        }
    }

    @IBInspectable var multilinesMode: Bool = false

    override func layoutSubviews() {
        super.layoutSubviews()
        for segment in self.subviews {
            for subview in segment.subviews {
                if let segmentLabel = subview as? UILabel {
                    segmentLabel.frame = CGRect(x: 0, y: 0, width: segmentLabel.frame.size.width, height: segmentLabel.frame.size.height * 1.6)
                    if (multilinesMode == true)
                    {
                        segmentLabel.numberOfLines = 0
                    }
                    else
                    {
                        segmentLabel.numberOfLines = 1
                    }
                }
            }
        }
    }

}

这篇关于UISegmentedControl文本有多行的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！