从 Swift 中的按钮按下触发本地通知权限对话框

Question

What is the correct way to trigger a notification permissions dialog from a button press?

All of the tutorials place the permission dialog trigger in appDelegate so as soon as the application is loaded a permissions dialog appears.

Answer 1

I think you just answered your own question. Move the code that asks for notification permission to the function that gets called for your button press. It might look something like this:

@IBAction func buttonPressed() {
    registerUserNotificationSettings()
}

func registerUserNotificationSettings() {
    let userNotificationTypes = UIUserNotificationType.Alert | UIUserNotificationType.Badge | UIUserNotificationType.Sound
    let settings = UIUserNotificationSettings(forTypes: userNotificationTypes, categories: nil)
    UIApplication.sharedApplication().registerUserNotificationSettings(settings)
}