我的问题是,我想为每个顶部,底部,左侧和右侧将单元格的contentView插入10。我想将此空间用作分隔符并禁用默认的表格视图分隔符。看起来没有插入内容:
现在有两个问题:
1。
我可以通过覆盖表格视图单元格的layoutSubviews来更改此设置:
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:
现在说明标签有问题:
这是我的表格视图单元格(它使用自动布局,因此标签定义了单元格的高度):
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
}
那是我的表视图控制器代码:
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contentView又可以动态调整标签大小(定义单元格高度)? 谢谢!
答案 0 :(得分:1)
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descriptionLabel
下层约束的优先级降低到999
答案 1 :(得分:0)