ios - 如何在属性字符串中居中图像？

Question

我有一个 image，我想将它与一堆文本一起居中，但即使我将 NSMutableParagraphStyle alignment 设置为 居中，图片所在的线不居中

如果有人可以帮助我将图像(即第一行)居中，那就太好了!

代码

let text = " text next to image is not centered \n\n centered text \n more centered text"
let iconAttachment = textAttachment(fontSize: 14, image: #imageLiteral(resourceName: "icon"))
        let iconString = NSAttributedString(attachment: iconAttachment)
let style = NSMutableParagraphStyle()
        style.alignment = .center
        style.minimumLineHeight = 20
        
        let attributedText = NSMutableAttributedString()
        attributedText.append(iconString)
        let fullText = NSAttributedString(string: text, attributes: [NSParagraphStyleAttributeName : style])
        attributedText.append(fullText)

private func textAttachment(fontSize: CGFloat, image: UIImage) -> NSTextAttachment {
        let font = UIFont.systemFont(ofSize: fontSize) //set accordingly to your font, you might pass it in the function
        let textAttachment = NSTextAttachment()
            textAttachment.image = image
        let mid = font.descender + font.capHeight
        textAttachment.bounds = CGRect(x: 0, y: font.descender - image.size.height / 2 + mid + 2, width: image.size.width, height: image.size.height).integral
        return textAttachment
    }

Answer 1

你只需要将你的 lebel 文本对齐到中心就可以了:

 label.textAlignment = .center