The use of UIStackView

#import "ViewController.h" @interface ViewController () @property (nonatomic, strong) UIStackView *horizontalStackView; @end @implementation ViewController - (void)viewDidLoad { [super viewDidLoad]; self.navigationController.navigationBarHidden = YES; self.view.backgroundColor = [UIColor lightGrayColor]; [self.view addSubview:self.horizontalStackView]; self.horizontalStackView.frame = CGRectMake(10, 100, self.view.frame.size.width-20, 100); } - (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event { UILabel *lbl = [self textLbl]; [self.horizontalStackView addArrangedSubview:lbl]; [UIView animateWithDuration:1 animations:^{ [self.horizontalStackView layoutIfNeeded]; }]; } - (UILabel *)textLbl { UILabel *lbl = [[UILabel alloc] init]; LBL. BackgroundColor = [[UIColor redColor] colorWithAlphaComponent: 0.1]; Lbl. text = @" text "; return lbl; } - (UIStackView *)horizontalStackView { if (! _horizontalStackView) { _horizontalStackView = [[UIStackView alloc] init]; _horizontalStackView.axis = UILayoutConstraintAxisHorizontal; _horizontalStackView.distribution = UIStackViewDistributionFillEqually; _horizontalStackView.spacing = 10; _horizontalStackView.alignment = UIStackViewAlignmentFill; _horizontalStackView.backgroundColor = [UIColor yellowColor]; } return _horizontalStackView; } @endCopy the code

#import "ViewController.h" @interface ViewController () @property (nonatomic, strong) UIStackView *verticalStackView; @end @implementation ViewController - (void)viewDidLoad { [super viewDidLoad]; self.navigationController.navigationBarHidden = YES; self.view.backgroundColor = [UIColor lightGrayColor]; [self.view addSubview:self.verticalStackView]; self.verticalStackView.frame = CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height); } - (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event { UILabel *lbl = [self textLbl]; [self.verticalStackView addArrangedSubview:lbl]; [UIView animateWithDuration:1 animations:^{ [self.verticalStackView layoutIfNeeded]; }]; } - (UILabel *)textLbl { UILabel *lbl = [[UILabel alloc] init]; LBL. BackgroundColor = [[UIColor redColor] colorWithAlphaComponent: 0.1]; Lbl. text = @" text "; return lbl; } - (UIStackView *)verticalStackView { if (! _verticalStackView) { _verticalStackView = [[UIStackView alloc] init]; _verticalStackView.axis = UILayoutConstraintAxisVertical; _verticalStackView.distribution = UIStackViewDistributionFillEqually; _verticalStackView.spacing = 10; _verticalStackView.alignment = UIStackViewAlignmentFill; _verticalStackView.backgroundColor = [UIColor yellowColor]; } return _verticalStackView; } @endCopy the code