MaximAlien

UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 50, 50, 50)];
[view setBackgroundColor:[UIColor blackColor]];
[self.view addSubview:view];
    
CABasicAnimation *animation = [CABasicAnimation animation];
animation.keyPath = @"position.x";
animation.fromValue = @0;
animation.toValue = @(self.view.frame.size.width);
animation.duration = 1;
animation.fillMode = kCAFillModeForwards;

MaximAlien

#if DEBUG
    println("debug")
#else
    println("Not debug")
#endif

MaximAlien

// ViewController.h

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController <UITableViewDelegate, UITableViewDataSource>

@property (weak, nonatomic) IBOutlet UITableView *tableView;

@end

MaximAlien

// ViewController.h

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController <UICollectionViewDelegate, UICollectionViewDataSource>

@property (weak, nonatomic) IBOutlet UICollectionView *collectionView;

@end

MaximAlien

- (void)viewDidLoad
{
    [super viewDidLoad];
    
    UIBarButtonItem *doneButton = [[UIBarButtonItem alloc] initWithTitle:@"Done" style:UIBarButtonItemStylePlain target:self action:@selector(done)];
    [self.navigationItem setRightBarButtonItem:doneButton];
}

- (void)done
{

MaximAlien

- (id)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    
    if (self)
    {
        self.view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, self.frame.size.width, self.frame.size.height)];
        self.view.translatesAutoresizingMaskIntoConstraints = NO;
        
        [self addSubview:self.tableView];

MaximAlien

@protocol ExampleViewDelegate <NSObject>

- (void)doAction;

@end

@interface ExampleView : UIView

@property (assign) id<ExampleViewDelegate> delegate;

MaximAlien

NSMutableAttributedString *attributeString = [[NSMutableAttributedString alloc] initWithString:@"test1"];
[attributeString addAttribute:NSForegroundColorAttributeName value:[UIColor grayColor] range:NSMakeRange(0, [attributeString length])];
[attributeString addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:15.0f] range:NSMakeRange(0, [attributeString length])];
    
NSMutableAttributedString *attributeNewString = [[NSMutableAttributedString alloc] initWithString:@"test2"];
[attributeString appendAttributedString:attributeNewString];

self.testButton.titleLabel.attributedText = attributeString;

// Image attachment

MaximAlien

- (void)viewWillTransitionToSize:(CGSize)size withTransitionCoordinator:(id)coordinator
{
    [super viewWillTransitionToSize:size withTransitionCoordinator:coordinator];
    
    [coordinator animateAlongsideTransition:^(id<UIViewControllerTransitionCoordinatorContext>  _Nonnull context) {

    } completion:^(id<UIViewControllerTransitionCoordinatorContext>  _Nonnull context) {
        
    }];
}

MaximAlien

@implementation UIImage (ImageFromColorCategory)

+ (UIImage *)imageFromColor:(UIColor *)color withSize:(CGSize)size
{
    CGRect rect = CGRectMake(0, 0, size.width, size.height);
    UIGraphicsBeginImageContext(rect.size);
    CGContextRef context = UIGraphicsGetCurrentContext();
    CGContextSetFillColorWithColor(context, [color CGColor]);
    CGContextFillRect(context, rect);
    UIImage *image = UIGraphicsGetImageFromCurrentImageContext();