質問編集履歴
2
質問が不正に削除されていたため復旧を行いました
test
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test
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TwitterのようにハッシュタグをUITextViewでリンク化したいのでこのページを参考に、
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https://stackoverflow.com/questions/34294064/how-to-make-uitextview-detect-hashtags
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このコードを設定しました
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```swift
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UITextViewHashtagExtension.swift
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import UIKit
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extension UITextView {
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func resolveTags(){
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let nsText:NSString = self.text as NSString!
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// this needs to be an array of NSString. String does not work.
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let words:[String] = nsText.components(separatedBy: " ")
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// you can't set the font size in the storyboard anymore, since it gets overridden here.
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let attrs = [
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NSFontAttributeName : UIFont.systemFont(ofSize: 17.0)
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]
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// you can staple URLs onto attributed strings
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let attrString = NSMutableAttributedString(string: nsText as String, attributes:attrs)
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// tag each word if it has a hashtag
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for word in words {
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// found a word that is prepended by a hashtag!
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// homework for you: implement @mentions here too.
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if word.hasPrefix("#") {
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// a range is the character position, followed by how many characters are in the word.
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// we need this because we staple the "href" to this range.
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let matchRange:NSRange = nsText.range(of: word as String)
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// convert the word from NSString to String
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// this allows us to call "dropFirst" to remove the hashtag
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var stringifiedWord:String = word as String
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// drop the hashtag
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stringifiedWord = String(stringifiedWord.characters.dropFirst())
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// check to see if the hashtag has numbers.
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// ribl is "#1" shouldn't be considered a hashtag.
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let digits = NSCharacterSet.decimalDigits
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if (stringifiedWord.rangeOfCharacter(from: digits) != nil) {
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// hashtag contains a number, like "#1"
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// so don't make it clickable
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} else {
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// set a link for when the user clicks on this word.
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// it's not enough to use the word "hash", but you need the url scheme syntax "hash://"
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// note: since it's a URL now, the color is set to the project's tint color
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attrString.addAttribute(NSLinkAttributeName, value: "hash://" + stringifiedWord, range: matchRange)
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}
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}
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self.attributedText = attrString
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}
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}
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}
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```
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```swift
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ViewController.swift
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class ViewController: UIViewController, UITextViewDelegate {
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@IBOutlet weak var textView: UITextView!
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override func viewDidLoad() {
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super.viewDidLoad()
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self.textView.text = "#テスト"
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self.textView.resolveTags()
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//self.textView.resolveAtTags()
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textView.linkTextAttributes = [NSForegroundColorAttributeName:UIColor.red]
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}
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func textView(_ textView: UITextView,
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shouldInteractWith URL: URL,
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in characterRange: NSRange,
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interaction: UITextItemInteraction) -> Bool {
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print(URL)
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return false
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}
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}
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```
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実行し、ハッシュタグ部分をタップするとこのエラーが出てクラッシュしてしまいます
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174
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+
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175
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+
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176
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177
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正しく実行するにはどのようにすれば良いのでしょうか
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178
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+
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179
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+
ご教授をお願いいたします
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1
あ
test
CHANGED
|
File without changes
|
test
CHANGED
|
@@ -1,189 +1 @@
|
|
|
1
|
-
|
|
2
|
-
|
|
3
|
-
https://stackoverflow.com/questions/34294064/how-to-make-uitextview-detect-hashtags
|
|
4
|
-
|
|
5
|
-
このコードを設定しました
|
|
6
|
-
|
|
7
|
-
```swift
|
|
8
|
-
|
|
9
|
-
UITextViewHashtagExtension.swift
|
|
10
|
-
|
|
11
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-
import UIKit
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12
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-
|
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13
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-
extension UITextView {
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14
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-
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15
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-
func resolveTags(){
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16
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-
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17
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let nsText:NSString = self.text as NSString!
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18
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-
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19
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-
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20
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-
|
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21
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-
// this needs to be an array of NSString. String does not work.
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|
22
|
-
|
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23
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-
let words:[String] = nsText.components(separatedBy: " ")
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|
24
|
-
|
|
25
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-
|
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26
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-
|
|
27
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-
// you can't set the font size in the storyboard anymore, since it gets overridden here.
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|
28
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-
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|
29
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-
let attrs = [
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30
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-
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31
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NSFontAttributeName : UIFont.systemFont(ofSize: 17.0)
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32
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-
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33
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]
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34
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-
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35
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-
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36
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-
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37
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-
// you can staple URLs onto attributed strings
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38
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-
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39
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let attrString = NSMutableAttributedString(string: nsText as String, attributes:attrs)
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40
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-
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41
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-
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42
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-
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43
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-
// tag each word if it has a hashtag
|
|
44
|
-
|
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45
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-
for word in words {
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46
|
-
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47
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-
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48
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-
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49
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-
// found a word that is prepended by a hashtag!
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|
50
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-
|
|
51
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-
// homework for you: implement @mentions here too.
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|
52
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-
|
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53
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if word.hasPrefix("#") {
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54
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-
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55
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-
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56
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-
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57
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-
// a range is the character position, followed by how many characters are in the word.
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58
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-
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59
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-
// we need this because we staple the "href" to this range.
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60
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-
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61
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let matchRange:NSRange = nsText.range(of: word as String)
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62
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-
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63
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-
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64
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-
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65
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// convert the word from NSString to String
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66
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-
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67
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-
// this allows us to call "dropFirst" to remove the hashtag
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68
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-
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69
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var stringifiedWord:String = word as String
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70
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-
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71
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-
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72
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-
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73
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// drop the hashtag
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74
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-
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75
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stringifiedWord = String(stringifiedWord.characters.dropFirst())
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76
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-
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77
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78
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79
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// check to see if the hashtag has numbers.
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80
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-
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81
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// ribl is "#1" shouldn't be considered a hashtag.
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82
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-
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83
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-
let digits = NSCharacterSet.decimalDigits
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84
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-
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85
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-
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86
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-
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87
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if (stringifiedWord.rangeOfCharacter(from: digits) != nil) {
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88
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-
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89
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-
// hashtag contains a number, like "#1"
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90
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-
|
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91
|
-
// so don't make it clickable
|
|
92
|
-
|
|
93
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-
|
|
94
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-
|
|
95
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-
} else {
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96
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-
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97
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-
// set a link for when the user clicks on this word.
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|
98
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-
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99
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-
// it's not enough to use the word "hash", but you need the url scheme syntax "hash://"
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100
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-
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101
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// note: since it's a URL now, the color is set to the project's tint color
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102
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103
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attrString.addAttribute(NSLinkAttributeName, value: "hash://" + stringifiedWord, range: matchRange)
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}
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}
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self.attributedText = attrString
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}
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}
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120
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}
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122
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123
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```
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124
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125
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126
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127
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```swift
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128
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129
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ViewController.swift
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130
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131
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class ViewController: UIViewController, UITextViewDelegate {
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133
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134
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@IBOutlet weak var textView: UITextView!
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136
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137
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override func viewDidLoad() {
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138
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super.viewDidLoad()
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140
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141
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142
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self.textView.text = "#テスト"
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145
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self.textView.resolveTags()
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146
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147
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//self.textView.resolveAtTags()
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textView.linkTextAttributes = [NSForegroundColorAttributeName:UIColor.red]
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}
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func textView(_ textView: UITextView,
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shouldInteractWith URL: URL,
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in characterRange: NSRange,
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interaction: UITextItemInteraction) -> Bool {
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print(URL)
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return false
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}
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}
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178
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-
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179
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-
```
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180
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-
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181
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実行し、ハッシュタグ部分をタップするとこのエラーが出てクラッシュしてしまいます
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182
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183
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184
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185
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187
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正しく実行するにはどのようにすれば良いのでしょうか
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188
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-
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189
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-
ご教授をお願いいたします
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1
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+
ああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああ
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