如何在 didFinishLaunchingWithOptions 中获取设备令牌

Question

我在我的第一个 viewcontroller 中调用设备令牌。而且我无法得到结果，因为设备令牌为空。下面是我在appdelegate 中的代码：

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    [[UIApplication sharedApplication] registerForRemoteNotificationTypes:UIRemoteNotificationTypeAlert | UIRemoteNotificationTypeSound | UIRemoteNotificationTypeBadge];

    return YES;
}
- (void)application:(UIApplication *)app didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken
{
    token = [[deviceToken description] stringByTrimmingCharactersInSet:      [NSCharacterSet characterSetWithCharactersInString:@"<>"]];
    token = [token stringByReplacingOccurrencesOfString:@" " withString:@""];
    NSLog(@"Device Token ---%@", token);
    [[NSUserDefaults standardUserDefaults] setObject:token forKey:@"DeviceToken"];
    [[NSUserDefaults standardUserDefaults] synchronize];
}

当我在 Viewcontroller 中调用时：

NSString *token=  [[NSUserDefaults standardUserDefaults] objectForKey:@"DeviceToken"];

令牌为空。

Answer 1

    NSString *device = [deviceToken description];
    device = [device stringByTrimmingCharactersInSet:[NSCharacterSet characterSetWithCharactersInString:@"<>"]];
    device = [device stringByReplacingOccurrencesOfString:@" " withString:@""];

    NSLog(@"My device is: %@", device);

这在我的设备中非常适合我。

Answer 2

请参阅此 SO 答案中的 Kulss 答案：

How can I convert my device token (NSData) into an NSString?

您应该解析字节而不是描述。

Answer 3

第一

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions

将此添加到Application.h

Answer 4

我的朋友试试这个....

    - (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)devToken {
              #if !TARGET_IPHONE_SIMULATOR

// Prepare the Device Token for Registration (remove spaces and < >)
token = [[[[devToken description]
                        stringByReplacingOccurrencesOfString:@"<"withString:@""]
                       stringByReplacingOccurrencesOfString:@">" withString:@""]
                      stringByReplacingOccurrencesOfString: @" " withString: @""];
NSLog(@"%@",token);
[[NSUserDefaults standardUserDefaults] setObject:token forKey:@"deviceToken"];
[[NSUserDefaults standardUserDefaults] synchronize];
        #endif
}
/**
  * Failed to Register for Remote Notifications
 */
  - (void)application:(UIApplication *)application didFailToRegisterForRemoteNotificationsWithError:(NSError *)error {
    #if !TARGET_IPHONE_SIMULATOR

   NSLog(@"Error in registration. Error: %@", error);
  #endif
  }

编码愉快！！！！

Answer 5

添加两个方法didRegister和didFailToRegister，并确认你是在didRegister还是在didFailedToRegister中收到调用。

-(void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken
{
    NSLog(@"Device Token=> %@",deviceToken);

    //Parse your device toke

}

-(void)application:(UIApplication *)application didFailToRegisterForRemoteNotificationsWithError:(NSError *)error
{
    NSLog(@"Error in registration. Error: %@", error.description);
}

并确保您是否成功获得了您的设备令牌。或者你注册远程失败...

Answer 6

你可以试试这个

- (void)application:(UIApplication*)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData*) deviceToken {
    NSString *pushToken = [deviceToken description];
    pushToken = [pushToken stringByTrimmingCharactersInSet:[NSCharacterSet characterSetWithCharactersInString:@"<>"]];
    [[NSUserDefaults standardUserDefaults] setObject:pushToken forKey:@"device_token_data"];
    [[NSUserDefaults standardUserDefaults] synchronize];
}

Answer 7

可能对你有帮助。

首先注册通知然后您将收到didRegisterRemoteNotification

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    [[UIApplication sharedApplication] registerForRemoteNotificationTypes:(UIRemoteNotificationTypeAlert | UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound)];
}

- (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken {   
    self.strdeviceToken=[[deviceToken description] stringByTrimmingCharactersInSet:[NSCharacterSet characterSetWithCharactersInString:@"<>"]];
    self.strdeviceToken = [self.strdeviceToken stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
    self.strdeviceToken=[self.strdeviceToken stringByAddingPercentEscapesUsingEncoding:NSASCIIStringEncoding];
}

Answer 8

您应该检查您的配置文件。此外，应用程序应配置为在开发人员门户上推送通知。 执行这些步骤。

1. 在开发者门户上为您的应用程序标识符启用推送通知。
2. 重新生成配置文件。
3. 下载并安装新的配置文件。
4. 构建并运行。 它会起作用的。

Answer 9

试试这个..

事务完成后，您需要在视图控制器中使用令牌编号。因此，尝试通过AppDelegate.m 中的类似方法在 appDelegate 中再次创建或更改根视图控制器。

-(void)changeRootView
{
    [[UIApplication sharedApplication] registerForRemoteNotificationTypes:
     (UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound | UIRemoteNotificationTypeAlert)];

    // Override point for customization after application launch.
    self.viewController = [[[ViewController alloc] initWithNibName:@"ViewController" bundle:nil] autorelease];
    //Adding navigation controller to the main view.
    [navigationController release];

    navigationController = [[UINavigationController alloc] initWithRootViewController:self.viewController];
    self.window.rootViewController = navigationController;
    [self.window makeKeyAndVisible];

}

在这个方法中

[[UIApplication sharedApplication] registerForRemoteNotificationTypes:
         (UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound | UIRemoteNotificationTypeAlert)];

此语句有助于再次调用didRegisterForRemoteNotificationsWithDeviceToken，您可以将令牌存储在诸如NSUserDefaults 之类的对象中，您可以在viewController 中使用它。这个对我有用。你可以试试这个。祝你好运。