UIlabel可以用lessThanOrEqualToSuperview这个方式实现这个要求吗
时间: 2024-02-24 14:53:23 浏览: 24
可以的,您可以使用 `lessThanOrEqualToSuperview` 来设置 `UILabel` 的底部约束,从而实现您的要求。示例代码如下:
```swift
import SnapKit
class YourTableViewCell: UITableViewCell {
private let label = UILabel()
private let imageView = UIImageView()
override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
super.init(style: style, reuseIdentifier: reuseIdentifier)
// Add subviews to contentView
contentView.addSubview(label)
contentView.addSubview(imageView)
// Set label properties
label.numberOfLines = 0
// Set constraints for label
label.snp.makeConstraints { make in
make.top.equalToSuperview().offset(5)
make.left.right.equalToSuperview()
make.bottom.lessThanOrEqualToSuperview().offset(-10)
}
// Set constraints for imageView
imageView.snp.makeConstraints { make in
make.top.equalTo(label.snp.bottom).offset(10)
make.left.right.equalToSuperview()
make.bottom.equalToSuperview().offset(-10)
make.height.equalTo(0)
}
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
func configure(with text: String, image: UIImage?) {
label.text = text
// Update constraints for imageView based on the presence of an image
if let image = image {
imageView.image = image
imageView.snp.updateConstraints { make in
make.height.equalTo(50)
make.top.equalTo(label.snp.bottom).offset(10)
make.bottom.equalToSuperview().offset(-10)
}
} else {
imageView.image = nil
imageView.snp.updateConstraints { make in
make.height.equalTo(0)
make.top.equalTo(label.snp.bottom).offset(0)
make.bottom.equalToSuperview().offset(-10)
}
}
}
}
```
在这段代码中,我们使用了 `bottom.lessThanOrEqualToSuperview()` 来设置 `UILabel` 的底部约束,使其不会超出 `contentView` 的底部。