#import "ViewController.h" @interface ViewController () @end @implementation ViewController - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. UIScrollView *redView = [[UIScrollView alloc] init]; redView.backgroundColor = [UIColor redColor]; redView.translatesAutoresizingMaskIntoConstraints = NO; redView.contentSize = CGSizeMake(500, 500); [self.view addSubview:redView]; // スクロールさせるViewを作成 UIView *view = [[UIView alloc] initWithFrame:CGRectMake(100, 0, 50, 50)]; view.backgroundColor = [UIColor whiteColor]; [redView addSubview:view]; NSLayoutConstraint *redLeftConstraint = [NSLayoutConstraint constraintWithItem:redView attribute:NSLayoutAttributeLeft relatedBy:NSLayoutRelationEqual toItem:self.view attribute:NSLayoutAttributeLeft multiplier:1 constant:0]; NSLayoutConstraint *redBottomConstraint = [NSLayoutConstraint constraintWithItem:redView attribute:NSLayoutAttributeBottom relatedBy:NSLayoutRelationEqual toItem:self.view attribute:NSLayoutAttributeBottom multiplier:1 constant:0]; NSLayoutConstraint *redWidthConstraint = [NSLayoutConstraint constraintWithItem:redView attribute:NSLayoutAttributeWidth relatedBy:NSLayoutRelationEqual toItem:self.view attribute:NSLayoutAttributeWidth multiplier:1 constant:0]; NSLayoutConstraint *redHeightConstraint = [NSLayoutConstraint constraintWithItem:redView attribute:NSLayoutAttributeHeight relatedBy:NSLayoutRelationEqual toItem:self.view attribute:NSLayoutAttributeHeight multiplier:0.3 constant:0]; [self.view addConstraints:@[redLeftConstraint, redBottomConstraint, redWidthConstraint, redHeightConstraint]]; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } @end