定製NSUserNotifictation對象

Question

我想修改NSUserNotifictation通過自定義變量：

@interface MyUserNotification: NSUserNotification 
@property (nonatomic) int theid; 
@property (nonatomic) NSString* url; 
@end 

@implementation MyUserNotification 
@end 

然後在我的AppDelegate對象啓動時：

MyUserNotification *notification = [[MyUserNotification alloc] init]; 
notification.theid = theid; 

設置theid引發錯誤：

-[_NSConcreteUserNotification setTheid:]: unrecognized selector sent to instance 0x100204840 

爲什麼NSConcreteUserNotification對象涉入？

Answer 1

所以這個類並不意味着被覆蓋似乎，但是好消息：有一個userInfo字典？

所以，你可以存儲我會使用任何對象作爲一個用戶信息字典KV對...

int theid; 
NSUserNotification *notification = [[NSUserNotification alloc] init]; 
NSDictionary * userInfo = [NSMutableDictionary dictionary]; 
[userInfo setValue:@(theid) forKey:@"theid"]; 
notification.userInfo = userInfo;