Swift 約束自動調整標簽寬度

Question

這是我使 UILabel 自動調整大小的代碼：

        gmatesLabel.topAnchor.constraint(equalTo: homeButton.bottomAnchor, constant: 5).isActive = true
        gmatesLabel.trailingAnchor.constraint(equalTo: gmatesUniversitySeparatorView.leadingAnchor, constant: -20).isActive = true
        gmatesLabel.heightAnchor.constraint(equalToConstant: 40).isActive = true
//        gmatesLabel.widthAnchor.constraint(equalTo: gmatesLabel.widthAnchor, multiplier: 0.5)
        gmatesLabel.setContentCompressionResistancePriority(UILayoutPriorityRequired, for: .horizontal) 

我也試過這個代碼：

gmatesLabel.widthAnchor.constraint(equalTo: gmatesLabel.widthAnchor, multiplier: 0.5, constant: 150).isActive = true

但是標簽總是縮小的問題，我在這里錯過了什么？

更新我添加了領先的錨

gmatesLabel.heightAnchor.constraint(equalToConstant: 40).isActive = true

這是設置我的標簽的功能：

fileprivate func setCommonGmatesText(_ count: Int ) {

    let commonGmatesString   =  NSMutableAttributedString(string: "\(count)", attributes: [NSFontAttributeName : Font.boldFont22, NSForegroundColorAttributeName: Color.lightGray])
    commonGmatesString.append(NSAttributedString(string: "\(NSLocalizedString("commonGmates", comment: "How much common gmates we got"))", attributes: [NSFontAttributeName : Font.regularFont14, NSForegroundColorAttributeName: Color.lightGray]))
    gmatesLabel.attributedText = commonGmatesString
    gmatesLabel.sizeToFit()
}

Answer 1

你應該為你的標簽設置一個leadingAnchor（例如大於或等於8pt），這樣標簽就不會變大，成為超級視圖。

您還應該設置 lineBreakMode：

yourLabel.lineBreakMode = .byWordWrapping