@ 매크로

1.

    NSString *string = @"<#string#>"

2.  

    id express = @(<#expression#>)

  (ex)

    NSInteger idx = 40;

    NSString *idxString = [@(idx) stringValue];

3.    

    NSArray *array =  @[<#objects, ...#>]

4.    

    @autoreleasepool {

        <#statements#>

    }

5.    

    char[] chars =  @encode(<#type-name#>)

6.    

    Protocol *protocol = @protocol(<#protocol-name#>)

7.    

    SEL sel = @selector(<#selector#>)

8.    

    @throw <#expression#>

    

9.

    NSDictonary *dic = @{<#key#>: <#object, ...#>}

    

10.

    @try {

        <#Code that can potentially throw an exception#>

    }

    @catch (NSException *exception) {

        <#Handle an exception thrown in the @try block#>

    }

    @finally {

        <#Code that gets executed whether or not an exception is thrown#>

    }

11. structure

    CGSize theSize = {
        .width = 100.f,
        .height = 100.f,
    };

    

    CGRect theRect = {
        {.x = 10.f, .y= 10.f},
        {.width = 200.f, .height = 200.f}
    };

UIAlertView & Block function

source

//

//  CustomUIAlertView.m

//  patternpie

//

//  Created by MYUNG GU KIM on 10/2/14.

//  Copyright (c) 2014 piestudio. All rights reserved.

//

#import "CustomUIAlertView.h"

@implementation CustomUIAlertView

- (void)showWithBlock:(void (^)(int selectedIndex))complete

{

    self.delegate = self;

    ptrComplete = complete;

    [self show];

}

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex

{

    ptrComplete((int)buttonIndex);

}

@end

header 

//

//  CustomUIAlertView.h

//  patternpie

//

//  Created by MYUNG GU KIM on 10/2/14.

//  Copyright (c) 2014 piestudio. All rights reserved.

//

#import <UIKit/UIKit.h>

void (^ptrComplete)(int);

@interface CustomUIAlertView : UIAlertView <UIAlertViewDelegate>

{

}

- ( void )showWithBlock: ( void ( ^ )( int selectedIndex) )complete;

@end

using

[[[CustomUIAlertView alloc] initWithTitle:nil message:@"Do you want Challenge?" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:@"Cancel", nil] showWithBlock:^(int selectedIndex) {

            NSLog(@"You selected button %d", selectedIndex);

        }];

random

1.  0~10 까지의 랜덤 숫자

uint32_t random = arc4random_uniform(11);

2.  50~100 까지의 랜덤 숫자

uint32_t random = arc4random_uniform(51)+50;

3.  랜덤 숫자

unsigned int random = arc4random();


4. 컬러값 랜덤으로 가져오기

static func randomBackgroundColor() -> UIColor {

        let colors = [UIColor.rgb(5, 200, 123), UIColor.rgb(176, 158, 145), UIColor.rgb(106, 97, 248), UIColor.rgb(33, 173, 254), UIColor.rgb(249, 135, 40)]

        let randomIndex = Int(arc4random_uniform(UInt32(colors.count)))

        return colors[randomIndex]

    }

시, 분, 초 계산 방법

   CFTimeInterval _ticks;

    _ticks += 0.1;

    double seconds = fmod(_ticks, 60.0);

    double minutes = fmod(trunc(_ticks / 60.0), 60.0);

    double hours = trunc(_ticks / 3600.0);

    self.timerLabel.text = [NSString stringWithFormat:@"%02.0f:%02.0f:%04.1f", hours, minutes, seconds];

    

    NSLog(@"tick = %f text = %@", _ticks, self.timerLabel.text);

2014-09-24 02:59:49.241 TabbedBanner[961:60b] tick = 0.100000 text = 00:00:00.1

2014-09-24 02:59:49.341 TabbedBanner[961:60b] tick = 0.200000 text = 00:00:00.2

2014-09-24 02:59:49.441 TabbedBanner[961:60b] tick = 0.300000 text = 00:00:00.3

...

2014-09-24 02:59:53.141 TabbedBanner[961:60b] tick = 4.000000 text = 00:00:04.0

2014-09-24 02:59:53.241 TabbedBanner[961:60b] tick = 4.100000 text = 00:00:04.1

2014-09-24 02:59:53.341 TabbedBanner[961:60b] tick = 4.200000 text = 00:00:04.2

2014-09-24 02:59:53.441 TabbedBanner[961:60b] tick = 4.300000 text = 00:00:04.3

...

2014-09-24 03:03:35.186 TabbedBanner[961:60b] tick = 224.900000 text = 00:03:44.9

2014-09-24 03:03:35.286 TabbedBanner[961:60b] tick = 225.000000 text = 00:03:45.0

2014-09-24 03:03:35.386 TabbedBanner[961:60b] tick = 225.100000 text = 00:03:45.1

2014-09-24 03:03:35.486 TabbedBanner[961:60b] tick = 225.200000 text = 00:03:45.2

2014-09-24 03:03:35.586 TabbedBanner[961:60b] tick = 225.300000 text = 00:03:45.3

2014-09-24 03:03:35.686 TabbedBanner[961:60b] tick = 225.400000 text = 00:03:45.4

UITextField 의 text 가 영인지 체크하는 방법

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string {

    NSRange textFieldRange = NSMakeRange(0, [textField.text length]);

    if (NSEqualRanges(range, textFieldRange) && [string length] == 0) {

        [_keywordClearButton setHidden:YES];

    } else

        [_keywordClearButton setHidden:NO];

    

    return YES;

}

rotate 360 degree

1)

CABasicAnimation *fullRotation = [CABasicAnimation animationWithKeyPath:@"transform.rotation.x"];

    fullRotation.fromValue = [NSNumber numberWithFloat:0];

    fullRotation.toValue = [NSNumber numberWithFloat:((360*M_PI)/180)];

    fullRotation.duration = .3f;

    fullRotation.repeatCount = 1;

    [self.layer addAnimation:fullRotation forKey:@"360"];

2)

if(rotationCount == 3) {

        [UIView animateWithDuration:.4f delay:0.f usingSpringWithDamping:.5f initialSpringVelocity:0.f options:UIViewAnimationOptionCurveLinear | UIViewAnimationOptionBeginFromCurrentState animations:^{

            [_thumbnailImage setTransform:CGAffineTransformRotate(_thumbnailImage.transform, M_PI_2)];

        } completion:^(BOOL finished) {

            if (finished) {

                return;

            }

        }];

    }

    else {

        

        [UIView animateWithDuration:.2f animations:^{

            [_thumbnailImage setTransform:CGAffineTransformRotate(_thumbnailImage.transform, M_PI_2)];

        } completion:^(BOOL finished) {

            [self rotateAnimation];

        }];

        

    }

    

    rotationCount++;

3)

[UIView animateKeyframesWithDuration:.8f delay:0.0 options:UIViewKeyframeAnimationOptionCalculationModeLinear|UIViewKeyframeAnimationOptionBeginFromCurrentState animations:^{

        

        // push the from- view to the back

        [UIView addKeyframeWithRelativeStartTime:0.0f relativeDuration:0.4f animations:^{

            [_thumbnailImage setTransform:CGAffineTransformRotate(_thumbnailImage.transform, M_PI_2)];

        }];

        [UIView addKeyframeWithRelativeStartTime:0.2f relativeDuration:0.4f animations:^{

            [_thumbnailImage setTransform:CGAffineTransformRotate(_thumbnailImage.transform, M_PI_2)];

        }];

        

        // slide the to- view upwards. In his original implementation Tope used a 'spring' animation, however

        // this does not work with keyframes, so we siulate it by overshooting the final location in

        // the first keyframe

        [UIView addKeyframeWithRelativeStartTime:0.6f relativeDuration:0.2f animations:^{

            [_thumbnailImage setTransform:CGAffineTransformRotate(_thumbnailImage.transform, M_PI_2)];

        }];

        [UIView addKeyframeWithRelativeStartTime:0.8f relativeDuration:0.2f animations:^{

            [_thumbnailImage setTransform:CGAffineTransformRotate(_thumbnailImage.transform, M_PI_2)];

        }];

        /*

        [UIView addKeyframeWithRelativeStartTime:1.f relativeDuration:0.4f animations:^{

            [_thumbnailImage setTransform:CGAffineTransformRotate(_thumbnailImage.transform, -(M_PI_2))];

        }];

        

        [UIView addKeyframeWithRelativeStartTime:.9f relativeDuration:0.2f animations:^{

            [_thumbnailImage setTransform:CGAffineTransformRotate(_thumbnailImage.transform, M_PI_4)];

        }];

        [UIView addKeyframeWithRelativeStartTime:1.4f relativeDuration:0.2f animations:^{

            [_thumbnailImage setTransform:CGAffineTransformRotate(_thumbnailImage.transform, -(M_PI_4))];

        }];

        [UIView addKeyframeWithRelativeStartTime:1.8f relativeDuration:0.2f animations:^{

            [_thumbnailImage setTransform:CGAffineTransformIdentity];

        }];*/

        

        

    } completion:^(BOOL finished) {

    }];

flip 360 degree

1) horizontally flip

_bodyView.transform = CGAffineTransformScale(_bodyView.transform, 1, -1);

    

    [UIView animateWithDuration:.5f delay:0 usingSpringWithDamping:.3f initialSpringVelocity:70.f options:UIViewAnimationOptionTransitionFlipFromTop animations:^{

        

        _bodyView.transform = CGAffineTransformScale(_bodyView.transform, 1, -1);

        

    } completion:^(BOOL finished) {

    }];