머라카노?

NSString *orgString = @"가나다라 마바사 아자차카";

NSString *replaceString = [orgString stringByReplacingOccurrencesOfString:@"마바사" withString:@" ,,, "]; 

NSLog(@"String : %@", replaceString);

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

  if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 7.0) { // 7.0버전 이상

      UIView *addStatusBar = [[UIView alloc] init];

      addStatusBar.frame = CGRectMake(0, 0, 320, 20); // 세로높이 20

      addStatusBar.backgroundColor = [UIColor whiteColor]; // 색상

      [self.window.rootViewController.view addSubview:addStatusBar];

   }

}

- (NSURLRequest *)connection:(NSURLConnection *) connection

             willSendRequest:(NSURLRequest *)request

            redirectResponse:(NSURLResponse *)response {

   [UIApplication sharedApplication].networkActivityIndicatorVisible = YES; // 커넥션 시작 시 로딩 켬

}

- (void) connection : (NSURLConnection *) connection didFailWithError:(NSError *) error {

  [UIApplication sharedApplication].networkActivityIndicatorVisible = NO; // 커넥션 오류 시 로딩 끔

}

- (void) connectionDidFinishLoading : (NSURLConnection *) connection {

  [UIApplication sharedApplication].networkActivityIndicatorVisible = NO; // 커넥션 종료 시 로딩 끔

}

NSData *data;

NSString *string = [[NSString alloc] initWithData : data encoding:NSUTF8StringEncoding];

NSString *text  = @"asdfasdfasdfasdfasdf";

NSString *addslashes = CFBridgingRelease( CFURLCreateStringByAddingPercentEscapes ( NULL,

                                                                       ( __bridge CFStringRef) text,

                                                                       NULL,

                                                                       CFSTR("!*'();:@&=+$,/?%#[]\""),

                                                                       kCFStringEncodingUTF8 ) );

Log.e(@"Data : %@", addslashes);

# pragma clang diagnostic push -- 추가

# pragma clang diagnostic ignored "-Warc-performSelector-leaks" -- 추가

  실행 코드

  [target performSelector:callBack withObject:dataToString];

#  pragma clang diagnostic pop -- 추가

해당 구문을 추가하면 워링경고창이 사라진다

performselector may cause a leak because its selector is unknown 에러는 말그대로 셀럭터를 못찾는다는 뜻

UIView *divView = [UIView new];

[divView setBackgroundColor:[[UIColor blackColor] colorWithAlphaComponent:0.8f]];

UIScrollView *scrollBody;

[scrollBody setContentOffset:CGPointMake(scrollBody.contentOffset.x, 0) animated:NO];

Boolean *checkYn = [UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera];

@try {

    ABUnknownPersonViewController *abView = [[ABUnknownPersonViewController alloc] init];

    UINavigationController *nc = [[UINavigationController alloc] initWithRootViewController:abView];

    abView.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc]

                                             initWithBarButtonSystemItem:UIBarButtonSystemItemCancel

                                             target:target

                                             action:@selector(setCloseAddressView)];

    abView.unknownPersonViewDelegate = target;

    abView.allowsAddingToAddressBook = YES;

    abView.displayedPerson           = newPerson;

    [target presentModalViewController:nc animated:YES];

  } @catch(NSException *exception) {

    NSLog(@"Exception : %@", exception);

  }