Question

我正在使用JSQMessagesViewController进行聊天应用，我希望将每个用户名属性设置为不同的颜色

在我的createAvatar函数中，我为ColorForEachUser词典指定了不同的颜色：

    var avatars = [String:JSQMessagesAvatarImage]()
    var colorsForEachUser = [String: UIColor]()

    func createAvatar(senderID: String, senderDisplayName:String , senderPhoneNumber : String, color:UIColor){
            if avatars[senderID] == nil{

                //MARK: - load the user image in avatar
                let profileImageName = "\(senderPhoneNumber)_small.jpg"
                let profileImagePath = fileInDocumentsDirectory(profileImageName)

                if let loadedImage = loadImageFromPath(profileImagePath){
                    print(" Loaded Image from document directory: \(loadedImage)")
                    let avatar = JSQMessagesAvatarImageFactory.avatarImageWithImage(loadedImage, diameter: 70)
                    avatars[senderID] = avatar
                }else{
                    print("not found in document directory")
                    let avatar = JSQMessagesAvatarImageFactory.avatarImageWithImage(UIImage(named:"defaultUser.png" ), diameter: 70)
                    avatars[senderID] = avatar

                }
                //MARK: - load the user color in avatar name
                let colors = [TwitterBlue , pinkIlana , facebookBlue , favoritesRedColor, orange, purple , greenFluo, greenOlive ,yellowFluo, pinkFluo, redFull, brown, greenLight, blueBlack]
// POPULATING MY DICTIONNARY
                colorsForEachUser[senderID] = colors[Int(arc4random_uniform(13))]
            }
     }

我在我的attributionTextForMessageBubbleTopLabelAtIndexPath函数中使用它：

   //MARK: text top of the bubble
        override func collectionView(collectionView: JSQMessagesCollectionView?, attributedTextForMessageBubbleTopLabelAtIndexPath indexPath: NSIndexPath!) -> NSAttributedString! {
            let message = messages[indexPath.item]
            switch message.senderId {
            case senderId:
                return nil
            default:
                guard let senderDisplayName = message.senderDisplayName else {
                    assertionFailure()
                    return nil
                }
                let range = (senderDisplayName as NSString).rangeOfString(senderDisplayName)
//HERE I TRY TO USE DIFFERENT COLORS 
                let attributedString = 
NSMutableAttributedString(string:senderDisplayName)
                attributedString.addAttribute(NSForegroundColorAttributeName, value: colorsForEachUser[senderId]! , range: range)

                return attributedString
            }
        }

但是对于不是我的用户，我获得了相同的颜色。谢谢你的帮助！

Answer 1

我的坏！在归属

时，必须在colorsForEachUser [senderId]中将senderId更改为message.senderId

在JSQMessagesViewController的群聊中为每个用户赋予不同的颜色？

1 个答案: