1.注册通知
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(showProgressHud:) name:@"showProgressHud" object:nil];
2.发送通知
[[NSNotificationCenter defaultCenter] postNotificationName:@"showProgressHud" object:nil userInfo:@{@"string":@"登录成功"}];
3.实现方法
- (void)showProgressHud:(id)notification {
}
4.移除通知
[[NSNotificationCenter defaultCenter] removeObserver:self name:@"showProgressHud" object:nil];