SlideShareとkeynoteの練習を兼ねて。iPhoneアプリで使える、NSNotificationという通知の仕組みについての概要です。

1. NSNotification

2. • NSNotification
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•
•
•
•

3. • NSNotification
• NSNotificationCenter
•
• /
MyObjB
NSNotification
MyObjA NSNotificationCenter MySendObj
MyObjC

4. •
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•
MyObjB “Hoge”
“Hoge”
MyObjA NSNotificationCenter MySendObj
MyObjC
”foo”

5. • NSNotificationCenter
• /
• ” ”
•
• NSNotification userInfo(NSDictionary) release
MyObjB
MyObjA NSNotificationCenter MySendObj
MyObjC

6. •
•
•
•

7. MyObjB ”hoge” popupAlert
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(popupAlert:)
name:@”hoge”
object:nil];
MyObjB
addObserver
NSNotificationCenter

8. MySendObj ”hoge”
// NSNotification
NSNotification* notification = [NSNotification notificationWithName: @”hoge”
object:self userInfo:nil];
//
[[NSNotificationCenter defaultCenter] postNotification:notification];
“Hoge”
NSNotificationCenter MySendObj
postNotification

9. NSNotificationCenter MyObjB
popupAlert
-(void)popupAlert:(NSNotification *)notification {
//
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Sample"
message:@” ”
delegate:self
cancelButtonTitle:@"OK"
otherButtonTitles: nil];
[alert show];
[alert release];
}
MyObjB
“Hoge”
NSNotificationCenter

10. removeObserver
- (void)dealloc {
// Notification
[[NSNotificationCenter defaultCenter] removeObserver:self];
}
MyObjB
removeObserver
NSNotificationCenter