Check if Local Notifications are enabled in IOS 8 - notifications

Question

I've looked all over the internet for how to create local notifications with IOS 8. I found many articles, but none explained how to determine if the user has set "alerts" on or off. Could someone please help me!!! I would prefer to use Objective C over Swift.

Answer 1

You can check it by using UIApplication 's currentUserNotificationSettings
if ([[UIApplication sharedApplication] respondsToSelector:#selector(currentUserNotificationSettings)]){ // Check it's iOS 8 and above
UIUserNotificationSettings *grantedSettings = [[UIApplication sharedApplication] currentUserNotificationSettings];
if (grantedSettings.types == UIUserNotificationTypeNone) {
NSLog(#"No permiossion granted");
}
else if (grantedSettings.types & UIUserNotificationTypeSound & UIUserNotificationTypeAlert ){
NSLog(#"Sound and alert permissions ");
}
else if (grantedSettings.types & UIUserNotificationTypeAlert){
NSLog(#"Alert Permission Granted");
}
}
Hope this helps , Let me know if you need more info

Answer 2

To expand on Albert's answer, you are not required to use rawValue in Swift. Because UIUserNotificationType conforms to OptionSetType it is possible to do the following:
if let settings = UIApplication.shared.currentUserNotificationSettings {
if settings.types.contains([.alert, .sound]) {
//Have alert and sound permissions
} else if settings.types.contains(.alert) {
//Have alert permission
}
}
You use the bracket [] syntax to combine option types (similar to the bitwise-or | operator for combining option flags in other languages).

Answer 3

Swift with guard:
guard let settings = UIApplication.sharedApplication().currentUserNotificationSettings() where settings.types != .None else {
return
}

Answer 4

Here is a simple function in Swift 3 that checks whether at least one type of notification is enabled.
Enjoy!
static func areNotificationsEnabled() -> Bool {
guard let settings = UIApplication.shared.currentUserNotificationSettings else {
return false
}
return settings.types.intersection([.alert, .badge, .sound]).isEmpty != true
}
Thanks Michał Kałużny for the inspiration.

Answer 5

Edit: Take a look at #simeon's answer.
In Swift, you need to use rawValue:
let grantedSettings = UIApplication.sharedApplication().currentUserNotificationSettings()
if grantedSettings.types.rawValue & UIUserNotificationType.Alert.rawValue != 0 {
// Alert permission granted
}

Answer 6

Using the #simeon answer Xcode tells me that
'currentUserNotificationSettings' was deprecated in iOS 10.0: Use UserNotifications Framework's -[UNUserNotificationCenter getNotificationSettingsWithCompletionHandler:] and -[UNUserNotificationCenter getNotificationCategoriesWithCompletionHandler:]
so here is the solution using the UNUserNotificationCenter for Swift 4:
UNUserNotificationCenter.current().getNotificationSettings(){ (settings) in
switch settings.alertSetting{
case .enabled:
//Permissions are granted
case .disabled:
//Permissions are not granted
case .notSupported:
//The application does not support this notification type
}
}

Answer 7

I think this code is more precise :
if ([[UIApplication sharedApplication] respondsToSelector:#selector(currentUserNotificationSettings)]) {
UIUserNotificationType types = [[[UIApplication sharedApplication] currentUserNotificationSettings] types];
if (types & UIUserNotificationTypeBadge) {
NSLog(#"Badge permission");
}
if (types & UIUserNotificationTypeSound){
NSLog(#"Sound permission");
}
if (types & UIUserNotificationTypeAlert){
NSLog(#"Alert permission");
}
}

Answer 8

Objective C + iOS 10
UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter];
[center getNotificationSettingsWithCompletionHandler:^(UNNotificationSettings * _Nonnull settings) {
switch (settings.authorizationStatus) {
case UNAuthorizationStatusNotDetermined:
break;
case UNAuthorizationStatusDenied:
break;
case UNAuthorizationStatusAuthorized:
break;
default:
break;
}
}];