ios - 如何提示用户接受 AppDelegate 之外的推送通知？
<p><p>我的应用加载到一个 ViewController 中，该 Controller 告诉用户为什么他们应该接受推送通知。直到他们按下此 ViewController 上的继续按钮后，我才希望提示他们接受推送通知。这意味着我需要在我的初始 ViewController 中的某处包含代码，让我们称之为 <strong>BeforePromptController</strong>。我正在使用 Firebase，以防万一。</p>
<p>这是我在 AppDelegate 中的工作代码(但是我想更改它，以便在用户按下 BeforePromptController 中的继续按钮后出现提示)。我试图在这里只包含 AppDelegate 的重要部分..</p>
<pre><code>import UIKit
import Firebase
import FirebaseMessaging
import UserNotifications
@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate, UNUserNotificationCenterDelegate, FIRMessagingDelegate {
var window: UIWindow?
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: ?) -> Bool {
FIRApp.configure()
if #available(iOS 10.0, *) {
let authOptions: UNAuthorizationOptions = [.alert, .badge, .sound]
UNUserNotificationCenter.current().requestAuthorization(
options: authOptions,
completionHandler: {_, _ in })
// For iOS 10 display notification (sent via APNS)
UNUserNotificationCenter.current().delegate = self
// For iOS 10 data message (sent via FCM)
FIRMessaging.messaging().remoteMessageDelegate = self
} else {
let settings: UIUserNotificationSettings =
UIUserNotificationSettings(types: [.alert, .badge, .sound], categories: nil)
application.registerUserNotificationSettings(settings)
}
application.registerForRemoteNotifications()
return true
}
func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: , fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) {
if application.applicationState == UIApplicationState.active {
var pushNotificationMessage = ""
if let aps = userInfo["aps"] as? NSDictionary {
if let alert = aps["alert"] as? NSDictionary {
if let message = alert["message"] as? NSString {
pushNotificationMessage = message as String
}
} else if let alert = aps["alert"] as? NSString {
pushNotificationMessage = alert as String
}
}
let notificationAlert = UIAlertController(title: nil, message: pushNotificationMessage, preferredStyle: .alert)
let defaultAction = UIAlertAction(title: "OK", style: .default, handler: {
(alert: UIAlertAction!) -> Void in
})
defaultAction.setValue(Constants.activePushNotificationOKColor, forKey: "titleTextColor")
notificationAlert.addAction(defaultAction)
self.window?.rootViewController?.present(notificationAlert, animated: true, completion: nil)
}
}
}
</code></pre></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><p>您可以将代码移到需要授权的 <code>FIRApp.configure()</code> 之后；您可以使用 <code>UIApplication.shared</code></p> 获取应用程序的引用</p>
<p style="font-size: 20px;">关于ios - 如何提示用户接受 AppDelegate 之外的推送通知？，我们在Stack Overflow上找到一个类似的问题：
<a href="https://stackoverflow.com/questions/42815777/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/42815777/
</a>
</p>
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