我有一个带有 @IBAction 的 ViewController，用于提示用户通过调用 AppDelegate 中的方法注册通知
class PermissionModalViewController: UIViewController {
let appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate
@IBAction func presentPermissions(sender: AnyObject) {
appDelegate.askNotificationsPermissions()
}
在我的 AppDelegate.swift 中，我有“didRegisterForRemoteNotificationsWithDeviceToken”函数
func askNotificationsPermissions() {
if(UIApplication.instancesRespondToSelector(Selector("registerUserNotificationSettings:"))){
println("i'm asking the do you want notifications question!")
UIApplication.sharedApplication().registerUserNotificationSettings(UIUserNotificationSettings(forTypes: .Alert | .Sound, categories: nil))
}
}
func application(application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: NSData) {
println("successful register for push")
let installation = PFInstallation.currentInstallation()
installation.setDeviceTokenFromData(deviceToken)
installation.saveInBackground()
}
根据这个答案，Register for remote notifications outside of app delegate我应该在我的 AppDelegate 中调用执行通知注册的方法(在我的例子中是 appDelegate.askNotificationPermissions())
但是，我的回调“didRegisterForRemoteNotificationsWithDeviceToken”没有被触发。为什么不触发“didRegisterForRemoteNotificationsWithDeviceToken”？
最佳答案
好的，能够解决这个问题。
在我的 AppDelegate.swift 文件中，我有以下方法:
func askNotificationsPermissions() {
if(UIApplication.instancesRespondToSelector(Selector("registerUserNotificationSettings:"))){
println("i'm asking the question!")
UIApplication.sharedApplication().registerUserNotificationSettings(UIUserNotificationSettings(forTypes: .Badge | .Alert | .Sound, categories: nil))
UIApplication.sharedApplication().registerForRemoteNotifications()
}
}
func application(application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: NSData) {
println("successful register for push")
let installation = PFInstallation.currentInstallation()
installation.setDeviceTokenFromData(deviceToken)
installation.saveInBackground()
}
func application(application: UIApplication, didFailToRegisterForRemoteNotificationsWithError error: NSError) {
if error.code == 3010 {
println("Push notifications are not supported in the iOS Simulator.")
} else {
println("application:didFailToRegisterForRemoteNotificationsWithError: %@", error)
}
}
在我的 ViewController.swift 中，我使用它来触发对用户的请求以授予我们发送远程通知的权限:
类 PermissionModalViewController: UIViewController {
let appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate
@IBAction func presentPermissions(sender: AnyObject) {
appDelegate.askNotificationsPermissions()
}
简而言之，我从我的 ViewController 调用了 AppDelegate 中定义的 askNotificationsPermissions() 函数。
我在原始问题中遗漏的另一部分是 registerForRemoteNotifications()，这是我在 askNotificationsPermissions() 问题中调用的方法。这需要在那里触发 didRegisterForRemoteNotificationsWithDeviceToken 回调
关于ios - 在 App Delegate 之外的 ViewController 中注册解析远程通知，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/30689275/