- (NSInteger)countStrWithEmoji:(NSString*)str {
__block NSInteger cnt = 0;
[str enumerateSubstringsInRange:NSMakeRange(0, [str length]) options:NSStringEnumerationByComposedCharacterSequences usingBlock:
^(NSString* substring, NSRange substringRange, NSRange enclosingRange, BOOL* stop){
const unichar high = [substring characterAtIndex: 0];
// surrogate pair
if (0xd800 <= high && high <= 0xdbff) {
cnt++;
// not surrogate pair
} else {
cnt++;
}
}];
return cnt;
}
UIButton *delBtn = self.delBtn;
[delBtn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
delBtn.backgroundColor = [UIColor redColor];
delBtn.layer.backgroundColor = [UIColor redColor].CGColor;
delBtn.layer.borderColor = [UIColor blackColor].CGColor;
delBtn.layer.borderWidth = 1.0f;
delBtn.layer.cornerRadius = 10.0f;
UIActionSheet * actionSheet = [[UIActionSheet alloc]initWithTitle:@"Setting" delegate:self
cancelButtonTitle:@"Cancel"
destructiveButtonTitle:@"Delete"
otherButtonTitles:@"1",@"2", nil];
[actionSheet showInView:self.view];
UIBarButtonItem *btn = ..
btn.title = @"\u2699";
UIFont *f1 = [UIFont fontWithName:@"Helvetica" size:24.0];
NSDictionary *dict = [[NSDictionary alloc] initWithObjectsAndKeys:f1, UITextAttributeFont, nil];
[btn setTitleTextAttributes:dict forState:UIControlStateNormal];
0으로 시작하고
9-10자리
숫자
1. 숫자만 추출하여
2. 정규표현식으로 체크
NSString *phoneNumber = @"03-3200-2222";
phoneNumber = [[phoneNumber componentsSeparatedByCharactersInSet:[[NSCharacterSet decimalDigitCharacterSet]invertedSet]]componentsJoinedByString:@""];
NSString *someRegexp = @"^0\\d{9,10}$";
NSPredicate *myTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", someRegexp];
if ([myTest evaluateWithObject: phoneNumber]){
//Matches
NSLog(@"it is a phone number");
}else{
NSLog(@"it is NOT a phone number");
}
JSON에서 받은 값에서 NULL의 값은
NSNull로 돌아오는데.
그 체크를 하려면
if (title == (id)[NSNull null] || title.length == 0 ) title = @"Something";
UIView : 배경. 경고창이외를 만질 때, 이벤트를 무시하기 위한
UIView : 경고창
UITextView : 메세지표시를 위한
UIButton : 경고창 버튼
1. 배경(UIView)에 경고창(UIView)을 붙여주고.
2. UITextView에 메세지를 넣고
3. UIView에 UITextView를 붙임
4. UITextView의 높이를 컨텐츠 높이로 재조정
5. UIView의 높이를 UITextView의 높이에 따라 재조정
6. 취향에 따라 버튼을 붙여준다.
UITextAlignment -> NSTextAlignment
아이폰5(긴- 레티나)
이름: Default-568h@2x
크기 : 640px x 1136px
아이폰4, 4s(종전 레티나)
이름 : default@2x.png
크기 : 640px x 960px
비레티나
이름 : default.png
크기 : 320px X 480 px
UIBarButtonItem *rightButton = [[UIBarButtonItem alloc] initWithTitle:@"Done"
style:UIBarButtonItemStyleDone target:self action:@selector(tapButton)];
[rightButton setTintColor:[UIColor colorWithRed:0.0/255.0 green:200.0/255.0 blue:0.0/255.0 alpha:1.0]];
self.navigationItem.rightBarButtonItem = rightButton;
NSString < -> CFStringRef
NSString *nsStr = (__bridge NSString *)cfStrRef;
http://stackoverflow.com/questions/640367/how-to-convert-cfstringref-to-nsstring
문자열에서 숫자만 뽑아내기
NSString *newString = [[origString componentsSeparatedByCharactersInSet:
[[NSCharacterSet decimalDigitCharacterSet] invertedSet]]
componentsJoinedByString:@""];
http://stackoverflow.com/questions/1129521/remove-all-but-numbers-from-nsstring
보호되어 있는 글입니다.
내용을 보시려면 비밀번호를 입력하세요.
1. xib 에서 보여질 Cell의 레이아웃 생성
2. UITableViewCell을 만들어서 xib의 셀에 커스텀클래스로 연결
3. 쓰여질 테이블뷰에서
셀 == nil일때
xib에서 불러서 cell에 집어넣음
ARC 사용.
iOS6은 멀쩡.
iOS5에서만 일어났음.
NSURLErrorUnknown = -1, NSURLErrorCancelled = -999, NSURLErrorBadURL = -1000, NSURLErrorTimedOut = -1001, NSURLErrorUnsupportedURL = -1002, NSURLErrorCannotFindHost = -1003, NSURLErrorCannotConnectToHost = -1004, NSURLErrorDataLengthExceedsMaximum = -1103, NSURLErrorNetworkConnectionLost = -1005, NSURLErrorDNSLookupFailed = -1006, NSURLErrorHTTPTooManyRedirects = -1007, NSURLErrorResourceUnavailable = -1008, NSURLErrorNotConnectedToInternet = -1009, NSURLErrorRedirectToNonExistentLocation = -1010, NSURLErrorBadServerResponse = -1011, NSURLErrorUserCancelledAuthentication = -1012, NSURLErrorUserAuthenticationRequired = -1013, NSURLErrorZeroByteResource = -1014, NSURLErrorCannotDecodeRawData = -1015, NSURLErrorCannotDecodeContentData = -1016, NSURLErrorCannotParseResponse = -1017, NSURLErrorInternationalRoamingOff = -1018, NSURLErrorCallIsActive = -1019, NSURLErrorDataNotAllowed = -1020, NSURLErrorRequestBodyStreamExhausted = -1021, NSURLErrorFileDoesNotExist = -1100, NSURLErrorFileIsDirectory = -1101, NSURLErrorNoPermissionsToReadFile = -1102, NSURLErrorSecureConnectionFailed = -1200, NSURLErrorServerCertificateHasBadDate = -1201, NSURLErrorServerCertificateUntrusted = -1202, NSURLErrorServerCertificateHasUnknownRoot = -1203, NSURLErrorServerCertificateNotYetValid = -1204, NSURLErrorClientCertificateRejected = -1205, NSURLErrorClientCertificateRequired = -1206, NSURLErrorCannotLoadFromNetwork = -2000, NSURLErrorCannotCreateFile = -3000, NSURLErrorCannotOpenFile = -3001, NSURLErrorCannotCloseFile = -3002, NSURLErrorCannotWriteToFile = -3003, NSURLErrorCannotRemoveFile = -3004, NSURLErrorCannotMoveFile = -3005, NSURLErrorDownloadDecodingFailedMidStream = -3006, NSURLErrorDownloadDecodingFailedToComplete = -3007
https://developer.apple.com/library/mac/#documentation/Cocoa/Reference/Foundation/Miscellaneous/Foundation_Constants/Reference/reference.html***set NSString with TextField's text
NSString *name = [[NSString alloc] initWithString:textField.text];
***edit NSString
NSString msg = [NSString stringWithFormat:@"%@", name];
***connect NSStirngs
NSString *str1 = @"aaaa";
NSString *str2 = @"bbbb";
NSString *str3 = [NSString stringWithFormat:@"%@%@",str1,str2];
***indexOf
#define contains(str1, str2) ([str1 rangeOfString: str2 ].location != NSNotFound)
if(contains(self.display.text, @".")){
return;
}
***trim
[self.tagTF.text stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]
***Casting
NSString → int
int num = [@"123" intValue];
int → NSString
NSString *str = [NSString stringWithFormat:@"%d", 123];
double → NSString
NSString *str = [NSString stringWithFormat:@"%f", 42.195];
toString
NSString *str = (NSString*)object;
1byte와 2byte문자가 섞인 문자열의 길이 알아내기
NSString *string = @"あいa";
int length = [string length];
int count = 0;
for (int i=0; i<length; i++) {
NSString *str = [string substringWithRange:NSMakeRange(i, 1)];
count+= [str lengthOfBytesUsingEncoding:[str smallestEncoding]];
}
ref : http://starpl.com/jidolstar/10659760
//UITextFieldDelegate 선언후...
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string {
if(textField.text.length + string.length - range.length > 15){
return NO;
}
return YES;
}
아이폰5의 길쭉한 화면과 예전의 화면을 볼수 있는 토글 버튼(스토리보드 하단에 위치)이 스토리 보드에 있는데,
하나 맞추고 다시 다른 것을 맞추면 먼저 맞춰져있던것이 다 헝클어지는 것이었다.
그럴 땐, size inspector(오른쪽 메뉴 끝에서 두번째) 잘 맞추면 된다.
Document 디렉토리 비우기 (서브디렉토리 & 파일 지우기)
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSArray *fileList = [filemgr subpathsAtPath:[paths objectAtIndex:0]];
for(int i=0; i < fileList.count; i++){
NSString *subPath = [fileList objectAtIndex:i];
NSLog(@"%d : %@", i, subPath);
NSString *currentPath = [NSString stringWithFormat:@"%@/%@", [paths objectAtIndex:0], subPath];
[filemgr removeItemAtPath:currentPath error:NULL];
}
파일 생성일
NSDictionary* fileAttribs = [[NSFileManager defaultManager] attributesOfItemAtPath:path error:nil];
NSDate *result = [fileAttribs fileCreationDate]; //or fileModificationDate
http://stackoverflow.com/questions/3642013/objective-c-get-file-creation-date
//동작확인
// xcode 4.6
// ipod touch 5th
.h
//delegate
@interface ViewController : UIViewController <UITextFieldDelegate>
.m
- (void)viewDidLoad
{
[super viewDidLoad];
tf.delegate = self;
}
- (BOOL)textFieldShouldReturn:(UITextField *)textField{
if(textField == tf){
[textField resignFirstResponder];
}
return YES;
}
EXC_BAD_ACCESS → ZombieObject 설정
EditSchme > 해당스킴 > Diagnostics > Memory Management
Enable Zombie Objects
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| 일 | 월 | 화 | 수 | 목 | 금 | 토 |
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | |
| 7 | 8 | 9 | 10 | 11 | 12 | 13 |
| 14 | 15 | 16 | 17 | 18 | 19 | 20 |
| 21 | 22 | 23 | 24 | 25 | 26 | 27 |
| 28 | 29 | 30 |
