文本泡泡只有两个字符宽 - JSQmessagesviewcontroller

Question

文字气泡只允许2个字符，然后为接下来的2个字符创建新的换行符。这将随机发生。我没有对它看起来像这样的气泡字符做任何调整。提前感谢您的帮助

  import UIKit
import JSQMessagesViewController
import MobileCoreServices
import AVKit
import Firebase
import Braintree

class messagesViewController: JSQMessagesViewController {
    //braintree info

    var braintreeClient: BTAPIClient?
    var clientToken = String()
    var formInfo = [String: AnyObject]()



    // this is the id of the post id number
    var previousViewMessageId:String!
 )
    var messages = [JSQMessage]()
    //ref to retrieve message
    var messageRef:FIRDatabaseReference! //

    override func viewDidLoad() {
        super.viewDidLoad()


        //braintreeSetup()
        navBar()
        // tappedMyPayButton()

        self.messageRef = fireBaseAPI().childRef("version_one/frontEnd/post/\(previousViewMessageId)")

        let currentUser = fireBaseAPI().currentUserId()
        self.senderId = currentUser
        self.senderDisplayName = ""
        let ref = fireBaseAPI().ref()
        let messagRef = ref.child("version_one/frontEnd/post/\(previousViewMessageId)messages")

        // messagRef.childByAutoId().setValue("first Message")

        messagRef.observeEventType(.ChildAdded, withBlock: {snapshot in
            //if let dict = snapshot.value as? String {
            //}



        })


        observerveMessages()

    }

}

extension messagesViewController {

    override func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return self.messages.count
    }

    override func collectionView(collectionView: JSQMessagesCollectionView!, messageDataForItemAtIndexPath indexPath: NSIndexPath!) -> JSQMessageData! {
        let data = self.messages[indexPath.row]      
        return data
    }


    override func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
        let cell = super.collectionView(collectionView, cellForItemAtIndexPath: indexPath) as! JSQMessagesCollectionViewCell

        return cell

    }
    override func collectionView(collectionView: JSQMessagesCollectionView!, didDeleteMessageAtIndexPath indexPath: NSIndexPath!) {
        self.messages.removeAtIndex(indexPath.row)
    }

    override func collectionView(collectionView: JSQMessagesCollectionView!, messageBubbleImageDataForItemAtIndexPath indexPath: NSIndexPath!) -> JSQMessageBubbleImageDataSource! {

        let bubbleFactory = JSQMessagesBubbleImageFactory()

        let message = messages[indexPath.item]

        if message.senderId == self.senderId {

            return bubbleFactory.outgoingMessagesBubbleImageWithColor(UIColor(r: 43, g: 216, b: 225))
        }else{

            return bubbleFactory.incomingMessagesBubbleImageWithColor(UIColor(r: 125, g: 125, b: 125))   
        }       
    }

    override func collectionView(collectionView: JSQMessagesCollectionView!, avatarImageDataForItemAtIndexPath indexPath: NSIndexPath!) -> JSQMessageAvatarImageDataSource! {

        return nil
    }
}

//MARK - image

extension messagesViewController:UIImagePickerControllerDelegate,UINavigationControllerDelegate {

    override func didPressSendButton(button: UIButton!, withMessageText text: String!, senderId: String!, senderDisplayName: String!, date: NSDate!) {

        let newMessage = messageRef.child("messages")

        let messageData = ["text":text,"senderId":senderId,"senderDisplayName":senderDisplayName, "mediaType":"TEXT"]

        newMessage.childByAutoId().setValue(messageData)


        self.finishSendingMessage()       
    }

    func observerveMessages(){
        let obRef = fireBaseAPI().childRef("version_one/frontEnd/post/\(previousViewMessageId)/messages")
        obRef.observeEventType(.ChildAdded, withBlock: {snapshot in
            //


            if let dict = snapshot.value as? [String:AnyObject]{
                let mediaType = dict["mediaType"] as! String
                let senderId = dict["senderId"] as! String
                let senderName = dict["senderDisplayName"] as! String


                switch mediaType {
                case "TEXT":
                    let text = dict["text"] as? String

                    self.messages.append(JSQMessage(senderId: senderId, displayName: senderName, text: text))


                case "PHOTO":
                    let fileUrl = dict["fileUrl"] as! String
                    let url = NSURL(string: fileUrl)
                    let data = NSData(contentsOfURL: url!)
                    let picture = UIImage(data: data!)
                    let photo = JSQPhotoMediaItem(image: picture!)

                    self.messages.append(JSQMessage(senderId: senderId,displayName: senderName, media: photo))

                    if self.senderId == senderId {
                        photo.appliesMediaViewMaskAsOutgoing = true

                    }else{
                        photo.appliesMediaViewMaskAsOutgoing = false
                    }


                case "VIDEO":
                    let fileUrl = dict["fileUrl"] as! String
                    let video = NSURL(string: fileUrl)
                    let videoItem = JSQVideoMediaItem(fileURL: video, isReadyToPlay: true)
                    self.messages.append(JSQMessage(senderId: senderId,displayName:senderName,media: videoItem))

                    if self.senderId == senderId {
                        videoItem.appliesMediaViewMaskAsOutgoing = true

                    }else{
                        videoItem.appliesMediaViewMaskAsOutgoing = false
                    }

                default :
                    print("Unknown data")
                }
                self.collectionView.reloadData()

            }


        })

    }

    override func didPressAccessoryButton(sender: UIButton!) {


        let sheet = UIAlertController(title: "Media Messages", message: "Please select an images", preferredStyle: .ActionSheet)
        let cancel = UIAlertAction(title: "Cancel", style: .Cancel) { (alert) in


        }
        let photoLibrary = UIAlertAction(title: "Photo Library", style: .Default) { (alert) in
            self.getMediafrom(kUTTypeImage)

        }
        let VideoLibrary = UIAlertAction(title: "Video Library", style: .Default) { (alert) in

            self.getMediafrom(kUTTypeMovie)
        }

        sheet.addAction(photoLibrary)
        sheet.addAction(VideoLibrary)
        sheet.addAction(cancel)

        self.presentViewController(sheet, animated: true, completion: nil)

        //        let imagePicker = UIImagePickerController()
        //        imagePicker.delegate = self
        //        self.presentViewController(imagePicker, animated: true, completion: nil)
        //

    }

    func getMediafrom(type:CFString){
        let mediaPicker = UIImagePickerController()
        mediaPicker.delegate = self
        mediaPicker.mediaTypes = [type as String]

        self.presentViewController(mediaPicker, animated: true, completion: nil)



    }
    // Display video message
    override  func collectionView(collectionView: JSQMessagesCollectionView!, didTapMessageBubbleAtIndexPath indexPath: NSIndexPath!) {

        let message = messages[indexPath.item]
        if message.isMediaMessage {

            if let mediaItem = message.media as? JSQVideoMediaItem{
                let player = AVPlayer(URL: mediaItem.fileURL)
                let playerViewController = AVPlayerViewController()
                playerViewController.player = player

                self.presentViewController(playerViewController, animated: true, completion: nil)

            }
        }

    }
    func sendMedia(picture:UIImage?,video: NSURL?){


        let filePath = "frontEnd/users/\(fireBaseAPI().currentUserId()!)/images/\(NSDate.timeIntervalSinceReferenceDate())/"

        if let picture = picture{

            let data = UIImageJPEGRepresentation(picture, 0.1)
            let metaData = FIRStorageMetadata()
            metaData.contentType = "image/jpg"
            FIRStorage.storage().reference().child(filePath).putData(data!, metadata: metaData) { (metaData, error) in
                if error != nil {
                    print(error)
                    return
                }

                let fileUrl =  metaData?.downloadURLs![0].absoluteString
                let newMessage = self.messageRef.child("messages")


                let messageData = ["fileUrl":fileUrl,"senderId":self.senderId,"senderDisplayName":self.senderDisplayName, "mediaType":"PHOTO"]

                newMessage.childByAutoId().setValue(messageData)



            }


        }else if let video = video{

            let data = NSData(contentsOfURL: video)
            let metaData = FIRStorageMetadata()
            metaData.contentType = "video/mp4"
            FIRStorage.storage().reference().child(filePath).putData(data!, metadata: metaData) { (metaData, error) in
                if error != nil {
                    print(error)
                    return
                }

                let fileUrl =  metaData?.downloadURLs![0].absoluteString
                let newMessage = self.messageRef.child("messages")

                let messageData = ["fileUrl":fileUrl,"senderId":self.senderId,"senderDisplayName":self.senderDisplayName, "mediaType":"VIDEO"]

                newMessage.childByAutoId().setValue(messageData)



            }


        }

    }

    //photothe
    func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {

        if let picture = info[UIImagePickerControllerOriginalImage] as? UIImage{
            //   let photo = JSQPhotoMediaItem(image: picture)
            ////  messages.append(JSQMessage(senderId: senderId,displayName: senderDisplayName,media: photo))
            sendMedia(picture,video:nil)

        }else if let video = info[UIImagePickerControllerMediaURL] as? NSURL {
            //            let videoItem = JSQVideoMediaItem(fileURL: video, isReadyToPlay: true)
            //            messages.append(JSQMessage(senderId: senderId,displayName:senderDisplayName,media: videoItem))

            sendMedia(nil, video: video)
        }






        self.dismissViewControllerAnimated(true, completion: nil)
        collectionView.reloadData()

    }

}
extension messagesViewController{

    func dismissVc(){
        self.dismissViewControllerAnimated(true, completion: nil)
    }
    //button setup

}
// button Actions