better condition to tryMentionUserAction

2026-08-14 15:26:40 +10:00 · 2016-01-11 17:28:28 +08:00
parent 6c4fbc22cd
commit 240ae2fdbb
1 changed files with 6 additions and 3 deletions
@@ -493,10 +493,13 @@ extension MessageToolbar: UITextViewDelegate {
            if let lastPart = parts.last {
                if lastPart.hasPrefix("@") {
                    let usernamePrefix = lastPart.substringFromIndex(lastPart.startIndex.advancedBy(1))
-                    mentionUsernameRange = text.rangeOfString(lastPart)
-                    tryMentionUserAction?(usernamePrefix: usernamePrefix)

-                    return
+                    if !usernamePrefix.isEmpty {
+                        mentionUsernameRange = text.rangeOfString(lastPart)
+                        tryMentionUserAction?(usernamePrefix: usernamePrefix)
+
+                        return
+                    }
                }
            }