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Quick Start
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Last Edit:
Jan 26 2021
Client Setup
Setup Client and Stream user in your AppDelegate:
import UIKit
import StreamChatCore
@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
// Setup Stream Chat Client Shared instance
// This needs to be called only once, since a singleton cannot be configured multiple times!
Client.configureShared(.init(apiKey: "<#Stream_API_Key#>"))
// Setup a Stream user.
Client.shared.set(user: User(id: "john-doe"),
token: "<#Token#>")
return true
}
}
ℹ️ You can find more info about
Clientsetup here.
ℹ️ You can find more info about
Usersetup here.
Channels
You can use ChannelsViewController with Storyboards or in code.
1. Using a Storyboard
Change your ViewController custom class in your Storyboard to ChannelsViewController. Wrap your ViewController with UINavigationController for easier navigation to a screen with messages of a selected channel.
For example, here is the setup of a ChannelsViewController from the UINavigationControllerroot view controller of the window app filtered by the current user:
import UIKit
import StreamChatCore
import StreamChat
class SceneDelegate: UIResponder, UIWindowSceneDelegate {
var window: UIWindow?
func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
guard let _ = (scene as? UIWindowScene) else { return }
// Find a UINavigationController from the window root view controller.
if let navigationController = window?.rootViewController as? UINavigationController,
// Get a ChannelsViewController from the navigation controller.
let channelsViewController = navigationController.viewControllers.first as? ChannelsViewController {
// Filter channels by the current user.
channelsViewController.presenter = ChannelsPresenter(filter: .in("members", [User.current.id]))
}
}
}
2. Using code
import UIKit
import StreamChatCore
import StreamChat
class SceneDelegate: UIResponder, UIWindowSceneDelegate {
var window: UIWindow?
func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
guard let scene = scene as? UIWindowScene else { return }
// Create a ChannelsViewController.
let channelsViewController = ChannelsViewController()
// Filter channels by the current user.
channelsViewController.presenter = ChannelsPresenter(filter: .in("members", [User.current.id]))
let window = UIWindow(windowScene: scene)
window.rootViewController = UINavigationController(rootViewController: channelsViewController)
self.window = window
window.makeKeyAndVisible()
}
}
Messages
You can use ChatViewController with Storyboards or in code.
1. Using a Storyboard
Change your ViewController custom class in your Storyboard to ChatViewController.
For example, here is the setup of a ChatViewController from the root view controller of the window app.
import UIKit
import StreamChatCore
import StreamChat
class SceneDelegate: UIResponder, UIWindowSceneDelegate {
var window: UIWindow?
func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
guard let _ = (scene as? UIWindowScene) else { return }
// Get a ChatViewController from the root view controller.
if let chatViewController = window?.rootViewController as? ChatViewController {
// Set a channel presenter for the chat.
let channel = Client.shared.channel(type: .messaging, id: "general")
chatViewController.presenter = ChannelPresenter(channel: channel)
}
}
}
2. Using code
import UIKit
import StreamChatCore
import StreamChat
class SceneDelegate: UIResponder, UIWindowSceneDelegate {
var window: UIWindow?
func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
guard let scene = scene as? UIWindowScene else { return }
// Create a ChatViewController.
let chatViewController = ChatViewController()
let channel = Client.shared.channel(type: .messaging, id: "general")
chatViewController.presenter = ChannelPresenter(channel: channel)
let window = UIWindow(windowScene: scene)
window.rootViewController = chatViewController
self.window = window
window.makeKeyAndVisible()
}
}