Swift (확장자)-여러 줄 uilabel에서 작동합니다.
swift4 : ( attributes
매개 변수가 boundingRect
약간 변경됨)
extension UILabel {
var isTruncated: Bool {
guard let labelText = text else {
return false
}
let labelTextSize = (labelText as NSString).boundingRect(
with: CGSize(width: frame.size.width, height: .greatestFiniteMagnitude),
options: .usesLineFragmentOrigin,
attributes: [.font: font],
context: nil).size
return labelTextSize.height > bounds.size.height
}
}
swift3 :
extension UILabel {
var isTruncated: Bool {
guard let labelText = text else {
return false
}
let labelTextSize = (labelText as NSString).boundingRect(
with: CGSize(width: frame.size.width, height: .greatestFiniteMagnitude),
options: .usesLineFragmentOrigin,
attributes: [NSFontAttributeName: font],
context: nil).size
return labelTextSize.height > bounds.size.height
}
}
swift2 :
extension UILabel {
func isTruncated() -> Bool {
if let string = self.text {
let size: CGSize = (string as NSString).boundingRectWithSize(
CGSize(width: self.frame.size.width, height: CGFloat(FLT_MAX)),
options: NSStringDrawingOptions.UsesLineFragmentOrigin,
attributes: [NSFontAttributeName: self.font],
context: nil).size
if (size.height > self.bounds.size.height) {
return true
}
}
return false
}
}