- (void)viewDidLoad {
[super viewDidLoad];
UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];
btn.frame = CGRectMake(100, 100, 100, 50);
btn.backgroundColor = [UIColor grayColor];
[btn setTitle:@"click me" forState:UIControlStateNormal];
[btn addTarget:self action:@selector(clickAction:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:btn];
// 注册消息
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(handleNoticeMessage:) name:@"test" object:@"notice-recieve"];
}
-(void)clickAction:(id)sender
{
// 能接受消息
[[NSNotificationCenter defaultCenter] postNotificationName:@"test" object:@"notice-recieve"];
// 不能接收到消息，object 对象不一致
[[NSNotificationCenter defaultCenter] postNotificationName:@"test" object:@"notice-recieve111"];
}
// 处理消息
-(void)handleNoticeMessage:(id)sender
{
NSLog(@"handleNoticeMessage sender = %@", sender);
}
-(void)viewWillDisappear:(BOOL)animated
{
// 移除通知
[[NSNotificationCenter defaultCenter]removeObserver:self];
}