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Platform Reference
Channel Window
This
ChannelWindowViewController contains a TableView to display a list of Messages, a UITextField to input a Message and a Send UIButton to send the Text Message.To initialise the list of Messages, do the following:
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// The channel id for this Channel. This will be set by ChannelListViewController
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var channelId = String()
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// The list of Messages in this channel, backing the messages TableView
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var messages = [Message]()
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override func viewDidLoad() {
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// Get the AppDelegate, which contains the Mitter object
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let appDelegate = UIApplication.shared.delegate as! AppDelegate
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// TableView setup
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...
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// Hook up the Send button
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sendButton.addTarget(self, action: #selector(buttonClicked), for: .touchUpInside)
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// Fetch all Messages in Channel
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appDelegate.mitter.messaging.getMessagesInChannel(channelId) {
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result in
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switch result {
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case .success(let fetchedMessages):
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self.messages = fetchedMessages.reversed()
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self.tableView.reloadData()
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case .error:
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print("Couldn't fetch messages")
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}
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}
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}
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}
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Set up the Send button click target:
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@objc func buttonClicked() {
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let appDelegate = UIApplication.shared.delegate as! AppDelegate
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appDelegate.mitter.messaging.sendTextMessage(forChannel: channelId, inputText.text!) { result in
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switch result {
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case .success:
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print("Message sent!")
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case .error:
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print("Couldn't send message")
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}
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}
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}
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Add a public function to add a Message into the
TableView. This will be used by AppDelegate when it receives an FCM message:1
func newMessage(channelId: String, message: Message) {
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if (self.channelId == channelId) {
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messages.append(message)
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tableView.reloadData()
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}
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}
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The controller also contains some View manipulation logic to align/colour Message bubbles based on who the sender is. Refer to the
cellForRowAt delegate function for the same.Last modified 3yr ago
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