我正在尝试获取特定范围的矩形(UITextRange
)。问题是代码可以正常工作iOS 10
,并且我得到了范围和矩形。不幸iOS 9
的是,这条线:
if let rangeStart = textInput.position(from: textInput.beginningOfDocument, offset: location)
返回nil
let location = self.textView.firstRect(for: range)
extension NSRange {
func toTextRange(textInput:UITextInput) -> UITextRange? {
if let rangeStart = textInput.position(from: textInput.beginningOfDocument, offset: location),
let rangeEnd = textInput.position(from: rangeStart, offset: length) {
return textInput.textRange(from: rangeStart, to: rangeEnd)
}
return nil
}
}