关于ContentCompressionResistance， ContentHugging运用
如下图效果图，两个Label并列在同一排上，左边label自适应，右边label（红色）要使得内容全部展示，如果左边label内容很少，那么右边label随着左边label动。
使用Snapkit 约束实现效果
xib AutoLayout关键设置
1.设置好相关约束，详见demo.
2.把左边label Compression horizontal降低至250（默认750，设置低于750任意值均可），右边红色label无需修改。
如下图
Snapkit 约束关键代码
import UIKitimport SnapKitclass SnpTableViewCell: UITableViewCell { var placeLabel = UILabel() var distanceLabel = UILabel() override init(style: UITableViewCellStyle, reuseIdentifier: String?) { super.init(style: style, reuseIdentifier: reuseIdentifier) setupUI() } required init?(coder aDecoder: NSCoder) { fatalError("init(coder:) has not been implemented") } override func awakeFromNib() { super.awakeFromNib() } /// MARK: -setup UI func setupUI() { distanceLabel.textColor = UIColor.red if #available(iOS 8.2, *) { distanceLabel.font = UIFont.systemFont(ofSize: 17, weight: UIFont.Weight.semibold) } else { distanceLabel.font = UIFont.boldSystemFont(ofSize: 17) } contentView.addSubview(placeLabel) contentView.addSubview(distanceLabel) placeLabel.snp.makeConstraints { $0.left.equalToSuperview().offset(16) $0.top.bottom.equalToSuperview() } distanceLabel.snp.makeConstraints{ $0.top.bottom.equalToSuperview() $0.left.equalTo(placeLabel.snp.right).offset(32) $0.right.lessThanOrEqualToSuperview().offset(-16) } //set CompressionResistance ContentHugging distanceLabel.setContentCompressionResistancePriority(.required, for: .horizontal) distanceLabel.setContentHuggingPriority(.required, for: .horizontal) placeLabel.setContentCompressionResistancePriority(.defaultLow, for: .horizontal) placeLabel.setContentHuggingPriority(.required, for: .horizontal) } override func setSelected(_ selected: Bool, animated: Bool) { super.setSelected(selected, animated: animated) // Configure the view for the selected state } }复制代码 关键设置代码是：
//set CompressionResistance ContentHugging distanceLabel.setContentCompressionResistancePriority(.required, for: .horizontal) distanceLabel.setContentHuggingPriority(.required, for: .horizontal) placeLabel.setContentCompressionResistancePriority(.defaultLow, for: .horizontal) placeLabel.setContentHuggingPriority(.required, for: .horizontal)复制代码