我的问题是,我想将单元格的 contentView 每个顶部、底部、左侧、右侧插入 10。我想使用这个空间作为分隔符并禁用默认的 TableView 分隔符。没有插图看起来像这样:
现在有两个问题:
- 问题:高度限制不明确(在 View 调试器中)
- 没有分隔符
1.
我可以通过覆盖我的表格 View 单元格的 layoutSubviews 来更改它:
override func layoutSubviews() { super.layoutSubviews() let contentViewFrame = self.contentView.frame let insetContentViewFrame = contentViewFrame.inset(by: UIEdgeInsets(top: 10, left: 10, bottom: 10, right: 10)) self.contentView.frame = insetContentViewFrame self.selectedBackgroundView?.frame = insetContentViewFrame }
但这会导致问题 3:
现在描述标签有问题:
这是我的表格 View 单元格(它使用自动布局,因此标签定义了单元格高度):
class NewsTableViewCell : UITableViewCell {
public private(set) var titleLabel: UILabel!
public private(set) var descriptionLabel: UILabel!
override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
super.init(style: style, reuseIdentifier: reuseIdentifier)
self.tintColor = UIColor.white
self.contentView.backgroundColor = UIColor.barTintColor
self.contentView.layer.masksToBounds = false
self.contentView.layer.cornerRadius = 10.0
self.backgroundColor = UIColor.clear
let layoutGuide = self.contentView.layoutMarginsGuide
self.titleLabel = UILabel(frame: .zero)
self.titleLabel.numberOfLines = 0
self.titleLabel.font = UIFont.preferredFont(forTextStyle: .headline)
self.titleLabel.textColor = UIColor.white
self.titleLabel.adjustsFontSizeToFitWidth = false
self.titleLabel.translatesAutoresizingMaskIntoConstraints = false
self.titleLabel.textAlignment = .left
self.contentView.addSubview(self.titleLabel)
self.titleLabel.setContentCompressionResistancePriority(.required, for: .vertical)
self.titleLabel.leadingAnchor.constraint(equalTo: layoutGuide.leadingAnchor).isActive = true
self.titleLabel.trailingAnchor.constraint(equalTo: layoutGuide.trailingAnchor).isActive = true
self.titleLabel.topAnchor.constraint(equalTo: layoutGuide.topAnchor).isActive = true
self.descriptionLabel = UILabel(frame: .zero)
self.descriptionLabel.numberOfLines = 0
self.descriptionLabel.font = UIFont.preferredFont(forTextStyle: .subheadline)
self.descriptionLabel.textColor = UIColor.lightGray
self.descriptionLabel.adjustsFontSizeToFitWidth = false
self.descriptionLabel.translatesAutoresizingMaskIntoConstraints = false
self.descriptionLabel.textAlignment = .left
self.contentView.addSubview(self.descriptionLabel)
self.descriptionLabel.setContentCompressionResistancePriority(.required, for: .vertical)
self.descriptionLabel.leadingAnchor.constraint(equalTo: layoutGuide.leadingAnchor).isActive = true
self.descriptionLabel.trailingAnchor.constraint(equalTo: layoutGuide.trailingAnchor).isActive = true
self.descriptionLabel.topAnchor.constraint(equalTo: self.titleLabel.bottomAnchor, constant: 5.0).isActive = true
self.descriptionLabel.bottomAnchor.constraint(equalTo: layoutGuide.bottomAnchor).isActive = true
let selectedView: UIView = UIView(frame: .zero)
selectedView.backgroundColor = UIColor.gray
selectedView.layer.cornerRadius = 10.0
selectedView.layer.masksToBounds = false
self.selectedBackgroundView = selectedView
}
这是我的 TableView Controller 代码:
self.tableView.rowHeight = UITableView.automaticDimension
self.tableView.estimatedRowHeight = 200.0
self.tableView.register(NewsTableViewCell.self, forCellReuseIdentifier: "NewsCell")
self.tableView.separatorStyle = .none
有什么办法既可以插入我的 contentView 又可以动态调整大小标签(定义单元格高度)? 谢谢!
最佳答案
1- 添加常量参数
self.titleLabel.leadingAnchor.constraint(equalTo: layoutGuide.leadingAnchor,constant:10).isActive = true
前导、尾随、顶部和底部
2-
将description Label
底部约束的优先级降低到999
关于ios - UITableViewCell contentView insets 和自动布局,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/53816550/