설치 페이지가 한글도 있는데 옛날꺼라서 귀찮지만 상세히 작성함..

당연히 맥 상에 iOS SDK & Xcode가 설치되어있다는 전제 하에 써내려갑니다.
먼저 cocos2d 홈페이지로 가봅시다.

URL : http://www.cocos2d-iphone.org/wiki/doku.php/prog_guide:index

위키답게 깔끔하니 곧바로 빨간 네모로 표시된 곳을 클릭

sudo ./install-templates.sh

설치가 끝나면 cocos2d 템플릿은 /Library/Application Support/Developer/Shared/Xcode 경로에.
샘플들은 다운받은 폴더에 설치됩니다.

그럼 이제 실행시켜봐야겠죠? 샘플이 있는 우리가 다운받은 폴더로 가서 cocos2d-iphone.xcodeproj 파일을 실행!
현재 상태에서 일단 전체 컴파일을 한 번 하고 필요한 샘플들을 실행시켜보기로 합시다. (Cmd+B)

시간이 꽤 걸리니 티 타임 ㄱㄱ..
에러나 워닝은 일단 무시하고(궁금하면 구글링 ㄱㄱ -_-;)
상단 메인 메뉴의 Project → Set Active Target 에서 원하는 예제를 선택하고 위 버튼 클릭! (혹은 Cmd+R)
실행 화면이 뜨나요!? 떴다면 이제부터 구글링과 함께 공부합시다~!

If you’ve ever wanted to show a simple “please wait” dialog without resorting to a custom view, UIAlertView is a good option, and is even more appropriate if you customize the alert such that no buttons are shown.

In the figure below you can see how a simple alert can be shown (sans buttons) while you are busy doing some other system activity (reading/writing files, etc).

UIAlertView without Buttons

UIAlertView *alert;
 
...
 
alert = [[[UIAlertView alloc] initWithTitle:@"Configuring Preferences\nPlease Wait..." 
  message:nil delegate:self cancelButtonTitle:nil otherButtonTitles: nil] autorelease];
 
[alert show];

Trouble with this approach is that things look a little lopsided, as there is a significant amount of dead space on the bottom where the button(s) are to be shown. We can fix this by adding a few newline characters at the start of our message:

UIAlertView *alert;
 
...
 
// Add two newlines characters at the start of the message
alert = [[[UIAlertView alloc] initWithTitle:@"\n\nConfiguring Preferences\nPlease Wait..." 
  message:nil delegate:self cancelButtonTitle:nil otherButtonTitles: nil] autorelease];
 
[alert show];

The text is nearly centered, yet we’ve created a different problem, there is now white space on the top and bottom. There is one more approach…

UIAlertView with UIActivity Indicator

In the whitespace on the bottom, let’s add an activity indicator. Also, remove the newlines in the message text so the text starts near the top:

UIAlertView *alert;
 
...
 
alert = [[[UIAlertView alloc] initWithTitle:@"\n\nConfiguring Preferences\nPlease Wait..." 
  message:nil delegate:self cancelButtonTitle:nil otherButtonTitles: nil] autorelease];

[alert show];
 
UIActivityIndicatorView *indicator = [[UIActivityIndicatorView alloc] 
  initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];

// Adjust the indicator so it is up a few pixels from the bottom of the alert
indicator.center = CGPointMake(alert.bounds.size.width / 2, alert.bounds.size.height - 50);
[indicator startAnimating];
[alert addSubview:indicator];
[indicator release];

Dismissing the Buttonless UIAlertView

Since there are no buttons associated with the alert, we have to dismiss the alert ourselves, versus the traditional approach where the system dismisses the alert when a button is pressed.

Here is the call to dismiss the alert:

[alert dismissWithClickedButtonIndex:0 animated:YES];

MBProgressHUD

MBProgressHUD is an iPhone drop-in class that displays a translucent HUD with a progress indicator and some optional labels while work is being done in a background thread. The HUD is meant as a replacement for the undocumented, private UIKit UIProgressHUD with some additional features.

Adding MBProgressHUD to your project

The simplest way to add the MBProgressHUD to your project is to directly add the MBProgressHUD.h and MBProgressHUD.m source files to your project.

1. Download the latest code version from the repository (you can simply use the Download Source button and get the zip or tar archive of the master branch).
2. Extract the archive.
3. Open your project in Xcode, than drag and drop MBProgressHUD.h and MBProgressHUD.m to your classes group (in the Groups & Files view).
4. Make sure to select Copy items when asked.

Usage

A full Xcode demo project is included in the Demo directory. This should give you an idea how to use the class.

UIBarButtonSystemItem은 아래 링크와 같이 정의되어 있음(사파리에서 제대로 보임)

http://developer.apple.com/iphone/library/documentation/UIKit/Reference/UIBarButtonItem_Class/Reference/Reference.html#//apple_ref/doc/uid/TP40007519-CH3-SW2

위 그림과 같이 100부터 문서화 되지 않은 아이템이 있음

UIBarButtonItem *buttonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:(UIBarButtonSystemItem)107 target:self action:NULL];

이런식으로 쓰면 됨.

How to Mask an Image

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- (UIImage*) maskImage:(UIImage *)image withMask:(UIImage *)maskImage {
 
	CGImageRef maskRef = maskImage.CGImage; 
 
	CGImageRef mask = CGImageMaskCreate(CGImageGetWidth(maskRef),
		CGImageGetHeight(maskRef),
		CGImageGetBitsPerComponent(maskRef),
		CGImageGetBitsPerPixel(maskRef),
		CGImageGetBytesPerRow(maskRef),
		CGImageGetDataProvider(maskRef), NULL, false);
 
	CGImageRef masked = CGImageCreateWithMask([image CGImage], mask);
	return [UIImage imageWithCGImage:masked];
 
}

아래와 같이 배경색을 바꿀 수 있습니다.

You can change background color of navigation bar like this.

타이틀은 다음과 같이 지정할 수 있습니다.

You can set the title like this. 

출처: http://www.devpia.com/MAEUL/Contents/Detail.aspx?BoardID=7462&MAEULNO=911&no=51672&page=1

최근 수신한 메일이 있으면 iPhone, iPod touch 메일 아이콘에 빨간색 동그라미 안에 있는 숫자를 보실 수 있습니다.
최근 수신한 이메일 개수를 보여주기 위한 배지(Badge)인데, 최근 수신한 데이터나 최근 등록한 데이터가 있을 때 보여주게 하면 시각효과가 좋습니다.

방법은 아주 간단합니다.

You can see number inside circle in red when you've got email recently on iPhone, iPod touch mail application.
It calls "Badge" that shows quantity of your recent received email. If there are some new received data or registered data,
visual effect(for recognition) will be good.

How-to use the "Badge" is easy.

Badge Number를 0으로 하면 뱃지가 사라집니다.

Setting "setApplicationIconBadgeNumber" to 0 (zero) will make disappeared the "Badge".

App을 종료하기 전에 위 코드를 실행해주면 종료후 iPhone 화면에 배지가 달린 아이콘을 보실 수 있습니다.

If you run above code before closing the application, you may see an icon with badge.

(추가)

위 내용은 델리게이트의 applicationWillTerminate: 메소드에 적용 시 iOS 4.0 이전에서는 이상이 없습니다.
4.0 이후라면 어플이 백그라운드로 진입 시 어떻게 할지 정한 후 (info.plist 파일에서 +누른 후 선택)
체크 한 경우에는 상관이 없고, (멀티 태스킹 미지원으로 설정)
체크 해제한 경우에는 어플이 백그라운드로 갈 때의 메소드에도 넣어주시면 됩니다. (멀티 태스킹 지원, 두 메소드 모두에 넣기)

(Addition)

Above article is for lower version than iOS 4.0 (support multi-tasking function).
Using higher iOS version(support multi-tasking function, after iOS 4.0), you must consider a matter in all its aspects whether you will use badge on multi-tasking environment.
You can set up on info.plist file. Add new option to info.plist on xcode by clicking + button.
Select Application does Not run in Background option.
Checking that option will not support multi-tasking, unchecking will support.
Checking that option is equal to this article, unchecking may make some code to application will run in background methods.