how to get Device Token in iOS? - ios

Question

I am working on push notifications. I wrote the following code for fetching a device token.
-(BOOL)application:(UIApplication *)application
didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
[self.window addSubview:viewController.view];
[self.window makeKeyAndVisible];
NSLog(#"Registering for push notifications...");
[[UIApplication sharedApplication] registerForRemoteNotificationTypes:
(UIRemoteNotificationTypeSound | UIRemoteNotificationTypeAlert)];
return YES;
}
-(void)application:(UIApplication *)app didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken
{
NSString *str = [NSString stringWithFormat:#"Device Token=%#",deviceToken];
NSLog(#"This is device token%#", deviceToken);
}
-(void)application:(UIApplication *)app didFailToRegisterForRemoteNotificationsWithError:(NSError *)err
{
NSString *str = [NSString stringWithFormat: #"Error: %#", err];
NSLog(#"Error %#",err);
}

Answer 1

Try this code :
// Register for Push Notification
if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0)
{
[[UIApplication sharedApplication] registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:(UIUserNotificationTypeSound | UIUserNotificationTypeAlert | UIUserNotificationTypeBadge) categories:nil]];
[[UIApplication sharedApplication] registerForRemoteNotifications];
}
else
{
[[UIApplication sharedApplication] registerForRemoteNotificationTypes:
(UIUserNotificationTypeBadge | UIUserNotificationTypeSound | UIUserNotificationTypeAlert)];
}
- (void)application:(UIApplication *)application didRegisterUserNotificationSettings:(UIUserNotificationSettings *)notificationSettings // NS_AVAILABLE_IOS(8_0);
{
[application registerForRemoteNotifications];
}
- (void)application:(UIApplication*)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData*)deviceToken{
NSLog(#"deviceToken: %#", deviceToken);
NSString * token = [NSString stringWithFormat:#"%#", deviceToken];
//Format token as you need:
token = [token stringByReplacingOccurrencesOfString:#" " withString:#""];
token = [token stringByReplacingOccurrencesOfString:#">" withString:#""];
token = [token stringByReplacingOccurrencesOfString:#"<" withString:#""];
}
Note : simulator not return deviceToken, deviceToken only return in device with valid APNS certificate

Answer 2

Enable "Push Notifications" in Xcode, this will fix the issue.
Targets -> Capabilities -> Push Notifications
Note:
Provisioning Profiles Should be in Active State

Answer 3

In iOS 8 and iOS 9 you need to register for notifications like this:
NSLog(#"Registering for push notifications...");
[[UIApplication sharedApplication] registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:(UIRemoteNotificationTypeSound | UIRemoteNotificationTypeAlert categories:nil]];
[[UIApplication sharedApplication] registerForRemoteNotifications];
Note that if you also want to support iOS 7, then you'll need to call your existing code on the earlier versions of iOS.

Answer 4

Same issue happened with me So You have to use following code to get device token:-
- (void)application:(UIApplication *)app didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken
{
NSString *token = [[deviceToken description] stringByTrimmingCharactersInSet: [NSCharacterSet characterSetWithCharactersInString:#"<>"]];
token = [token stringByReplacingOccurrencesOfString:#" " withString:#""];
NSLog(#"content---%#", token);
}
Even then it doesn't work Then please check your provisioning profile,it should be of that app ID by which you have created your ssl certificate for push notification.

Answer 5

Here is the latest code of swift 4.0, so you can use following code to get device token.
import UserNotifications
if #available(iOS 10, *) {
UNUserNotificationCenter.current().delegate = self
UNUserNotificationCenter.current().requestAuthorization(options:[.badge, .alert, .sound]){ (granted, error) in
}
UIApplication.shared.registerForRemoteNotifications()
} else {
UIApplication.shared.registerUserNotificationSettings(UIUserNotificationSettings(types: [.badge, .sound, .alert], categories: nil))
UIApplication.shared.registerForRemoteNotifications()
}
func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
let token = deviceToken.map { String(format: "%.2hhx", $0) }.joined()
}

Answer 6

Get device token in Swift 3
func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
let token = String(format: "%#", deviceToken as CVarArg)
.trimmingCharacters(in: CharacterSet(charactersIn: "<>"))
.replacingOccurrences(of: " ", with: "")
print(token)
}