我目前正在关注zero2launches聊天应用程序，我还在YouTube上观看/完成了他们的其他教程。当我启动聊天应用程序时，我考虑将聊天部分从tableViewController更改为JSQMessageViewController。在这方面，我可以将数据发布到firebase，但它不会显示在各个聊天室中。
以下是代码：
var roomId: String!
var messages = [JSQMessage]()
func observeMessage() {
messageRef.observeEventType(.ChildAdded, withBlock: { snapshot in
//print(snapshot.value)
if let dict = snapshot.value as? [String: AnyObject] {
let mediaType = dict["MediaType"] as! String
let senderId = dict["senderId"] as! String
let senderName = dict["senderName"] 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))
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))
default:
print("unknow data type")
}
if mediaType == "TEXT" {
let text = dict["text"] as? String
self.messages.append(JSQMessage(senderId: senderId, displayName: senderName, text: text))
}else if mediaType == "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))
}else if mediaType == "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))
}
print(dict)
let text = dict["text"] as? String
self.messages.append(JSQMessage(senderId: senderId, displayName: senderName, text: text))
self.collectionView.reloadData()
}
})
}
override func didPressSendButton(button: UIButton!, withMessageText text: String!, senderId: String!, senderDisplayName: String!, date: NSDate!) {
let newMessage = messageRef.childByAutoId()
let messageData = ["text": text, "senderId": senderId, "senderName": senderDisplayName, "MediaType": "TEXT"]
newMessage.setValue(messageData)
}
override func didPressAccessoryButton(sender: UIButton!) {
print("didPressAccessoryButton")
let sheet = UIAlertController(title: "Media Messages", message: "Please select a media", preferredStyle: UIAlertControllerStyle.ActionSheet)
let cancel = UIAlertAction(title: "Cancel", style: UIAlertActionStyle.Cancel) { (alert:UIAlertAction) in
}
let photoLibrary = UIAlertAction(title: "Photo Library", style: UIAlertActionStyle.Default) { (alert: UIAlertAction) in
self.getMediaFrom(kUTTypeImage)
}
let videoLibrary = UIAlertAction(title: "Video Library", style: UIAlertActionStyle.Default) { (alert: UIAlertAction) in
self.getMediaFrom(kUTTypeMovie)
}
sheet.addAction(photoLibrary)
sheet.addAction(videoLibrary)
sheet.addAction(cancel)
self.presentViewController(sheet, animated: true, completion: nil)
}
func getMediaFrom(type: CFString) {
print(type)
let mediaPicker = UIImagePickerController()
mediaPicker.delegate = self
mediaPicker.mediaTypes = [type as String]
self.presentViewController(mediaPicker, animated: true, completion: nil)
}
override func collectionView(collectionView: JSQMessagesCollectionView!, messageDataForItemAtIndexPath indexPath: NSIndexPath!) -> JSQMessageData! {
return messages[indexPath.item]
}
override func collectionView(collectionView: JSQMessagesCollectionView!, messageBubbleImageDataForItemAtIndexPath indexPath: NSIndexPath!) -> JSQMessageBubbleImageDataSource! {
let bubbleFactory = JSQMessagesBubbleImageFactory()
return bubbleFactory.outgoingMessagesBubbleImageWithColor(.blackColor())
}
override func collectionView(collectionView: JSQMessagesCollectionView!, avatarImageDataForItemAtIndexPath indexPath: NSIndexPath!) -> JSQMessageAvatarImageDataSource! {
return nil
}
override func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
print("number of item:\(messages.count)" )
return messages.count
}
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!, didTapMessageBubbleAtIndexPath indexPath: NSIndexPath!) {
print("didTapMessageBubbleAtIndexPath: \(indexPath.item)")
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)
}
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func sendMedia(picture: UIImage?, video: NSURL?) {
print(picture)
FIRStorage.storage().reference()
if let picture = picture {
let filePath = "\(FIRAuth.auth()?.currentUser!)\(NSDate.timeIntervalSinceReferenceDate())"
print(filePath)
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?.localizedDescription)
return
}
let fileUrl = metadata!.downloadURLs![0].absoluteString
let newMessage = self.messageRef.childByAutoId()
let messageData = ["fileUrl": fileUrl, "senderId": self.senderId, "senderName": self.senderDisplayName, "MediaType": "PHOTO"]
newMessage.setValue(messageData)
}
}else if let video = video {
let filePath = "\(FIRAuth.auth()?.currentUser!)\(NSDate.timeIntervalSinceReferenceDate())"
print(filePath)
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?.localizedDescription)
return
}
let fileUrl = metadata!.downloadURLs![0].absoluteString
let newMessage = self.messageRef.childByAutoId()
let messageData = ["fileUrl": fileUrl, "senderId": self.senderId, "senderName": self.senderDisplayName, "MediaType": "VIDEO"]
newMessage.setValue(messageData)
}
}
}
}
这是我现有的消息数据库功能
let roofRef = FIRDatabase.database().reference()
class DataService {
static let dataService = DataService()
private var _BASE_REF = roofRef
private var _ROOM_REF = roofRef.child("captions")
private var _MESSAGE_REF = roofRef.child("messages")
private var _PEOPLE_REF = roofRef.child("people")
var currentUser: FIRUser? {
return FIRAuth.auth()!.currentUser!
}
var BASE_REF: FIRDatabaseReference {
return _BASE_REF
}
var ROOM_REF: FIRDatabaseReference {
return _ROOM_REF
}
var MESSAGE_REF: FIRDatabaseReference {
return _MESSAGE_REF
}
var PEOPLE_REF: FIRDatabaseReference {
return _PEOPLE_REF
}
var storageRef: FIRStorageReference {
return FIRStorage.storage().reference()
}
var fileUrl: String!
func CreateNewPost(user: FIRUser, caption: String, data: NSData) {
let filePath = "\(user.uid)/\(Int(NSDate.timeIntervalSinceReferenceDate()))"
let metaData = FIRStorageMetadata()
metaData.contentType = "image/jpg"
storageRef.child(filePath).putData(data, metadata: metaData, completion: { (metadata, error) in
if let error = error{
print("Error uploarding: \(error.description)")
return
}
self.fileUrl = metadata!.downloadURLs![0].absoluteString
if let user = FIRAuth.auth()?.currentUser {
let idCaption = self.BASE_REF.child("captions").childByAutoId()
idCaption.setValue(["caption": caption, "thumbnailURLFromStorage": self.storageRef.child(metadata!.path!).description, "filelUrl": self.fileUrl])
}
})
}
func SignUp(username: String, email: String, password: String, data: NSData) {
FIRAuth.auth()?.createUserWithEmail(email, password: password, completion: { (user, error) in
if let error = error {
print(error.localizedDescription)
return
}
let changeRequest = user?.profileChangeRequest()
changeRequest?.displayName = username
changeRequest?.commitChangesWithCompletion({ (error) in
if let error = error {
print(error.localizedDescription)
return
}
})
let filePath = "profileImage/\(user!.uid)"
let metadata = FIRStorageMetadata()
metadata.contentType = "image/jpeg"
self.storageRef.child(filePath).putData(data, metadata: metadata, completion: { (metadata, error) in
if let error = error {
print("\(error.description)")
return
}
self.fileUrl = metadata?.downloadURLs![0].absoluteString
let changeRequestPhoto = user!.profileChangeRequest()
changeRequestPhoto.photoURL = NSURL(string: self.fileUrl)
changeRequestPhoto.commitChangesWithCompletion({ (error) in
if let error = error {
print(error.localizedDescription)
return
}else{
print("profile updated")
}
})
self.PEOPLE_REF.child((user?.uid)!).setValue(["username": username, "email": email, "profileImage": self.storageRef.child((metadata?.path)!).description])
ProgressHUD.showSuccess("Succeeded.")
let appDelegate: AppDelegate = UIApplication.sharedApplication().delegate as! AppDelegate
appDelegate.login()
})
})
}
//implement login func
func login(email: String, password: String) {
FIRAuth.auth()?.signInWithEmail(email, password: password, completion: { (user, error) in
if let error = error {
print(error.localizedDescription)
return
}
ProgressHUD.showSuccess("Succeeded")
let appDelegate: AppDelegate = UIApplication.sharedApplication().delegate as! AppDelegate
appDelegate.login()
})
}
// Update profile
func SaveProfile(username: String, email: String, data: NSData) {
let user = FIRAuth.auth()?.currentUser!
let filePath = "\(user!.uid)/\(Int(NSDate.timeIntervalSinceReferenceDate()))"
let metaData = FIRStorageMetadata()
metaData.contentType = "image/jpg"
self.storageRef.child(filePath).putData(data, metadata: metaData) { (metaData, error) in
if let error = error {
print("Error uploading: \(error.description)")
return
}
self.fileUrl = metaData!.downloadURLs![0].absoluteString
let changeRequestProfile = user?.profileChangeRequest()
changeRequestProfile?.photoURL = NSURL(string: self.fileUrl)
changeRequestProfile?.displayName = username
changeRequestProfile?.commitChangesWithCompletion({ (error) in
if let error = error {
print(error.localizedDescription)
ProgressHUD.showError("NetWork error")
}else{
}
})
if let user = user {
user.updateEmail(email, completion: { (error) in
if let error = error {
print(error.description)
}else{
print("email update")
}
})
}
ProgressHUD.showSuccess("Saved")
}
}
func CreateNewMessage(userId: String, roomId: String, textMessage: String) {
let idMessage = roofRef.child("messages").childByAutoId()
DataService.dataService.MESSAGE_REF.child(idMessage.key).setValue(["message": textMessage, "senderId": userId])
DataService.dataService.ROOM_REF.child(roomId).child("messages").child(idMessage.key).setValue(true)
}
func fetchMessageFromServer(roomId: String, callback: (FIRDataSnapshot) -> ()) {
DataService.dataService.ROOM_REF.child(roomId).child("messages").observeEventType(.ChildAdded, withBlock: {snapshot -> Void in
DataService.dataService.MESSAGE_REF.child(snapshot.key).observeEventType(.Value, withBlock: {
snap -> Void in
callback(snap)
})
})
}