无法使用类型为int的rvalue初始化UIRemote NotificationType类型的参数

Question

当我[[UIApplication sharedApplication] registerForRemoteNotificationTypes:(UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound | UIRemoteNotificationTypeAlert)];用来注册远程推送通知时,发生错误说cannot initialize a parameter of type 'UIRemoteNotificationType' with an rvalue of type 'int',有人知道为什么吗？谢谢.

我的项目环境:Xcode 4.2 + iOS 5.

Answer 1

你应该明确地把它强制转换为 UIRemoteNotificationType

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