objective-c - cocoa 定制通知示例

有人可以给我展示一个带有自定义通知的 cocoa Obj-C对象示例，如何触发，订阅和处理它？

最佳答案

@implementation MyObject

// Posts a MyNotification message whenever called
- (void)notify {
  [[NSNotificationCenter defaultCenter] postNotificationName:@"MyNotification" object:self];
}

// Prints a message whenever a MyNotification is received
- (void)handleNotification:(NSNotification*)note {
  NSLog(@"Got notified: %@", note);
}

@end

// somewhere else
MyObject *object = [[MyObject alloc] init];
// receive MyNotification events from any object
[[NSNotificationCenter defaultCenter] addObserver:object selector:@selector(handleNotification:) name:@"MyNotification" object:nil];
// create a notification
[object notify];

有关更多信息，请参见NSNotificationCenter的文档。

关于objective-c - cocoa 定制通知示例，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/842737/