ios Swift 标签中的换行符和行数（以编程方式）
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Line Breaks and Number of Lines in Swift Label (Programmatically)
提问by tika
By selecting a Label in a StoryBoard, I can select Line Breakto be Word Wrapand change number of lines to be more than 1. How can I do that Programmatically in Swift?
通过在 StoryBoard 中选择一个标签，我可以选择Line Break将Word Wrap行数更改为大于 1。如何在 Swift 中以编程方式执行此操作？
回答by rakeshbs
You can do this to set it programmatically
您可以这样做以编程方式设置它
label.lineBreakMode = NSLineBreakMode.ByWordWrapping
label.numberOfLines = 3
Swift 3/4
斯威夫特 3/4
label.lineBreakMode = .byWordWrapping
label.numberOfLines = 3
回答by Zoran777
If you want the label to have multiple lines, do this:
如果您希望标签具有多行，请执行以下操作：
var myLabel:UILabel = UILabel(frame: CGRectMake(7, 200, 370, 100))
myLabel.lineBreakMode = NSLineBreakMode.ByWordWrapping
myLabel.numberOfLines = 0 //'0' means infinite number of lines
Do remember to increase the height in "CGRectMake(7, 200, 370, 100)" <-- This
Otherwise the label won't be able to take the multiple lines of text.
请记住在“CGRectMake(7, 200, 370, 100)”中 增加高度<--
否则标签将无法采用多行文本。
回答by swiftBoy
Note with Swift 3you need to use updated method byWordWrapping
注意Swift 3你需要使用更新的方法 byWordWrapping
productNameLabel.lineBreakMode = .byWordWrapping
productNameLabel.numberOfLines = 1
Or for adding Ellipsisat the end use byTruncatingTail
或者在最后使用TruncatingTail添加省略号
productNameLabel.lineBreakMode = .byTruncatingTail
productNameLabel.numberOfLines = 1
