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//Interface @property (strong, nonatomic) IBOutlet UIImageView *Image1; @property (strong, nonatomic) IBOutlet UIImageView *image2; //Implementation image2.image = Image1.image; UIImage *img1 = Image1.image; UIImage *img2 = image2.image; [Image1 image ].accessibilityIdentifier = @"asd"; NSString *str = img2.accessibilityIdentifier; // str = img1.accessibilityIdentifier; NSLog(@"accessibilityIden..

#define MAXLENGTH 10 - (BOOL)textField:(UITextField *) textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string { NSUInteger oldLength = [textField.text length]; NSUInteger replacementLength = [string length]; NSUInteger rangeLength = range.length; NSUInteger newLength = oldLength - rangeLength + replacementLength; BOOL returnKey = [string rangeOfString: @"\n"]..

#import "CalcViewController.h" # The official raywenderlich.com Objective-C style guide. This style guide outlines the coding conventions for raywenderlich.com. ## Introduction The reason we made this style guide was so that we could keep the code in our books, tutorials, and starter kits nice and consistent - even though we have many different authors working on the books. This style guide is d..

Xcode 설정 reset Xcode를 사용하다가 환경설정을 잘못하였을 경우 기본 설정으로 되돌려주는 방법터미널을 열고 아래와 같이 명령을 실행. Xcode의 plist 파일을 삭제하고 모든 설정을 기본(초기설정)으로 되돌린다. $ defaults delete com.apple.Xcode $ rm -rf ~/Library/Application\ Support/Xcode

123456789101112NSDateFormatter *formatter = [[NSDateFormatter alloc] init];[formatter setDateFormat:@"yyyy-MM-dd hh:mm:ss"];NSString *strDate = [formatter stringFromDate:[NSDate date]];NSLog(@"%@", strDate); NSString *strDate = @"2011-12-04";NSDateFormatter *formatter = [[NSDateFormatter alloc] init];[strDate setDateFormat:@"yyyy-MM-dd"];NSDate *date = [[NSDate alloc] init];date = [date dateFrom..