我实际上正在开发一个古兰经应用程序,其中我使用TextKit突出显示经文并改变它们的颜色。一切都很好,但我有一些问题,出现多次。首先,我的代码是:
import UIKit
class ViewController: UIViewController {
let attributedBackgroundColor = [ NSBackgroundColorAttributeName: UIColor.lightGray ]
var myVerses = ["بِسْمِ اللَّهِ الرَّحْمَنِ الرَّحِيمِ","الْحَمْدُ لِلَّهِ رَبِّ الْعَالَمِينَ","الرَّحْمَنِ الرَّحِيمِ","مَالِكِ يَوْمِ الدِّينِ","إِيَّاكَ نَعْبُدُ وَإِيَّاكَ نَسْتَعِينُ","اهدِنَا الصِّرَاطَ الْمُسْتَقِيمَ","صِرَاطَ الَّذِينَ أَنْعَمْتَ عَلَيْهِمْ غَيْرِ الْمَغْضُوبِ عَلَيْهِمْ وَلاَ الضَّالِّينَ"]
@IBOutlet weak var textView: UITextView!
override func viewDidLoad() {
super.viewDidLoad()
let string = NSMutableAttributedString(string: "Vide initialement")
string.addAttribute(NSFontAttributeName, value: UIFont.systemFont(ofSize: CGFloat(25.0)), range: NSRange(location: 0, length: string.length))
let paragraphStyle = NSMutableParagraphStyle()
paragraphStyle.alignment = .center
string.addAttribute(NSParagraphStyleAttributeName, value: paragraphStyle, range: NSRange(location: 0, length: string.length))
textView.attributedText = string
let singleTap = UITapGestureRecognizer(target: self, action: #selector(ViewController.tapRecognized))
singleTap.numberOfTapsRequired = 1
textView.addGestureRecognizer(singleTap)
textView.isEditable = false
textView.isSelectable = false
var str = ""
// Ajouter numérotation aux verses - Add numerotation to verses.
for i in 0..<myVerses.count {
if i > 0 {
str += "("+"\(i)"+")"
}
str += String(myVerses[i])
}
print(str)
textView.text = str + "("+"\(myVerses.count)"+")"
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
// Sélection des verses - Select Verses
func tapRecognized(_ recognizer: UITapGestureRecognizer) {
if recognizer.state == .recognized {
let point = recognizer.location(in: recognizer.view)
let detectedText = self.getWordAtPosition(pos: point, in: textView)
if (detectedText != "") {
print("detectedText == \(detectedText)")
let string = NSMutableAttributedString(string: self.textView.text)
let verses = self.textView.text.components(separatedBy: ")")
if let detectedRange = textView.text.range(of: detectedText) {
let startPosOfSubstring = textView.text.distance(from: textView.text.startIndex, to: detectedRange.lowerBound)
let detectedLength = detectedText.characters.count
let rangeOfSub = (startPosOfSubstring,detectedLength)
print("-- rangeofSub == " ,rangeOfSub)
let rangeOfSubstring = NSRange(location: startPosOfSubstring, length: detectedLength)
for verse: String in verses {
if let detectedVerse = textView.text.range(of: verse) {
let startPosOfVerse = textView.text.distance(from: textView.text.startIndex, to: detectedVerse.lowerBound)
let detectedLengthOfVerse = verse.characters.count
let tupleVerse = (startPosOfVerse,detectedLengthOfVerse)
print("++ rangeofVerse == " ,tupleVerse)
let rangeOfVerse = NSRange(location: startPosOfVerse, length: detectedLengthOfVerse)
print(verse)
let range = (self.textView.text as NSString).range(of: verse)
let contained = NSLocationInRange(rangeOfSubstring.location, rangeOfVerse)
if (contained) {
print ("************************************")
print("contained is :" ,contained)
print ("************************************")
string.addAttribute(NSForegroundColorAttributeName, value: UIColor.red, range: range)
string.addAttribute(NSBackgroundColorAttributeName, value: UIColor.darkGray, range: range)
string.addAttribute(NSFontAttributeName, value: UIFont.systemFont(ofSize: CGFloat(25.0)), range: NSRange(location: 0, length: string.length))
let paragraphStyle = NSMutableParagraphStyle()
paragraphStyle.alignment = .center
string.addAttribute(NSParagraphStyleAttributeName, value: paragraphStyle, range: NSRange(location: 0, length: string.length))
}
print ("--------------------------------------------")
}
}
self.textView.attributedText = string
} else {
print("detectedText is empty")
}
}
}
}
func getWordAtPosition( pos: CGPoint, in textview: UITextView) -> String {
//Eleminer le balancement du scroll - eliminate scroll offset
// var pos = pos
// pos.y += tv.contentOffset.y
//Position du text tapé au point - get location in text from textposition at point
let tapPos = textview.closestPosition(to: pos)
//Avoir le mot tapé dans la position du point - fetch the word at this position (or nil, if not available)
if let wr = textview.tokenizer.rangeEnclosingPosition(tapPos!, with: .word, inDirection: UITextLayoutDirection.right.rawValue) {
print(pos)
return textview.text(in: wr)!
}else{
return ""
}
}
}
当我在模拟器上运行我的应用程序时,我选择了一个经文并且它很棒。
正常使用:
问题在于出现不止一次的单词。例如,对于发现两次的单词“الرحمن”,无论我选择第一个还是第二个,突出显示的经文始终是第一个。
我做错了什么? 提前致谢。
答案 0 :(得分:0)
根据我的理解,当用户选择该节目中的特定单词时,您希望突出显示整个经文。
您的逻辑中的问题是您确定用户选择的单词,但该单词不一定是唯一的,因此当您搜索此单词(使用textView.text.range(of: detectedText)
)时,您将获得第一个结果,可能是也可能不是用户实际选择的那个。
如果令牌化程序正确理解您的文本,一种可能的解决方案是在确定用户的选择时使用不同的TextGranularity
。而不是:
textview.tokenizer.rangeEnclosingPosition(tapPos!, with: .word, inDirection: UITextLayoutDirection.right.rawValue)
你可以尝试:
textview.tokenizer.rangeEnclosingPosition(tapPos!, with: .sentence, inDirection: UITextLayoutDirection.right.rawValue)