通知未被识别

Question

我正在尝试发布通知但没有成功！我能做到 键盘没问题，但现在我正在尝试定制一个 如下：

在我的根视图中，我有这个

.h

-(void) allowEdits:(NSNotification *)notification;

.m

//this section is run in method to present the passcode entry form


[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(allowEdits:) name: @"PasscodeOK" object:nil];

PasscodeEntryViewController *vc = [[PasscodeEntryViewController alloc]
init];

[self presentModalViewController: vc animated:YES];

[vc release];


// and this is the response to the notification

-(void) allowEdits:(NSNotification *)notification {

    NSLog(@"notification fired");
}


// in the vc instance I have this to notify passcode was ok

[[NSNotificationCenter defaultCenter]
postNotificationName:@"PasscodeOK" object:nil];

[self dismissView];

但allowEdits永远不会被调用？

Answer 1

您可以尝试使用以下方式发布通知：

[[NSNotificationCenter defaultCenter] postNotificationName:@"PasscodeOK" object:self];

作为发件人采用 vc 实例（自身）而不是 nil。也许这可以解决你的问题。