在TextView中找到子字符串的CGPoint位置 [英] Find CGPoint Location of substring in TextView
本文介绍了在TextView中找到子字符串的CGPoint位置的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我正在寻找创建一个SpriteKit节点,该节点位于UITextView内子字符串的位置.我将如何检索CGPoint位置,以便将SKNode定位在该位置?
I'm looking to create a SpriteKit Node positioned at the location of a substring inside a UITextView. How would I retrieve the CGPoint location so I can position the SKNode there?
let textFont = [NSFontAttributeName: UIFont(name: "GillSansMT", size: 30.0) ?? UIFont.systemFontOfSize(18.0)]
attrString1 = NSMutableAttributedString(string: "My name is Dug.", attributes: textFont)
textShown1 = CustomTextView(frame: CGRectMake(CGRectGetMidX(self.frame), 175 + (90 * paragraphNumber), CGRectGetWidth(self.frame) - 80, CGRectGetHeight(self.frame)-400))
textShown1.attributedText = attrString1
self.view?.addSubview(textShown1)
推荐答案
您可以在UITextView
let textFont = [NSFontAttributeName: UIFont(name: "GillSansMT", size: 30.0) ?? UIFont.systemFontOfSize(18.0)]
let attrString1 = NSMutableAttributedString(string: "My name is Dug.", attributes: textFont)
// range of substring to search
let str1 = attrString1.string as NSString
let range = str1.rangeOfString("name", options: nil, range: NSMakeRange(0, str1.length))
// prepare the textview
let textView = UITextView(frame:CGRectMake(0,0,200,200))
textView.attributedText = attrString1
// you should ensure layout
textView.layoutManager.ensureLayoutForTextContainer(textView.textContainer)
// text position of the range.location
let start = textView.positionFromPosition(textView.beginningOfDocument, offset: range.location)!
// text position of the end of the range
let end = textView.positionFromPosition(start, offset: range.length)!
// text range of the range
let tRange = textView.textRangeFromPosition(start, toPosition: end)
// here it is!
let rect = textView.firstRectForRange(tRange)
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