如何用UILabel显示APNS设备令牌？

Question

我想用UILabel显示一个APNS设备令牌。

所以我在下面编码：

//AppDelegate.m

- (void)application:(UIApplication*)application
didRegisterForRemoteNotificationsWithDeviceToken:(NSData*)deviceToken
{
// TODO: Pass the token to our server
NSString *devToken = [[[[deviceToken description] 
                        stringByReplacingOccurrencesOfString:@"<"withString:@""] 
                       stringByReplacingOccurrencesOfString:@">" withString:@""] 
                      stringByReplacingOccurrencesOfString: @" " withString: @""];


NSString *str = [NSString 
                 stringWithFormat:@"Device Token=%@",devToken];
UIAlertView *alertCtr = [[UIAlertView alloc] initWithTitle:@"Token is " message:devToken delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles: nil];
[alertCtr show];
NSLog(@"device token - %@",str);
viewc = [ViewController alloc];

viewc.tokenLabel.text = str;

}

但没有任何事情发生。怎么了？

Answer 1

viewc = [ViewController alloc];
viewc.tokenLabel.text = str;

在alloc视图控制器之后，您应该init。并呈现它，无论是模态还是导航控制器或其他东西，都取决于你。