iOS
UIFeedbackGenerator

前書き

トリガーインパクトハプティック

例は、ボタンを押した後にUIImpactFeedbackGeneratorを使用してインパクトハプティックをトリガする方法を示しています。

迅速

class ViewController: UIViewController
{
    lazy var button: UIButton =
    {
        let button = UIButton()
        button.translatesAutoresizingMaskIntoConstraints = false
        self.view.addSubview(button)
        button.centerXAnchor.constraint(equalTo: self.view.centerXAnchor).isActive = true
        button.centerYAnchor.constraint(equalTo: self.view.centerYAnchor).isActive = true
        button.setTitle("Impact", for: .normal)
        button.setTitleColor(UIColor.gray, for: .normal)
        return button
    }()
    
    // Choose between heavy, medium, and light for style
    let impactFeedbackGenerator = UIImpactFeedbackGenerator(style: .heavy)
    
    override func viewDidLoad()
    {
        super.viewDidLoad()
        button.addTarget(self, action: #selector(self.didPressButton(sender:)), for: .touchUpInside)

        // Primes feedback generator for upcoming events and reduces latency
        impactFeedbackGenerator.prepare()
    }
    
    func didPressButton(sender: UIButton)
    {
        // Triggers haptic
        impactFeedbackGenerator.impactOccurred()
    }
}

目標-C

@interface ViewController ()
@property (nonatomic, strong) UIImpactFeedbackGenerator *impactFeedbackGenerator;
@property (nonatomic, strong) UIButton *button;
@end

@implementation ViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
    [self.button addTarget:self action:@selector(didPressButton:) forControlEvents:UIControlEventTouchUpInside];
    
    // Choose between heavy, medium, and light for style
    self.impactFeedbackGenerator = [[UIImpactFeedbackGenerator alloc] initWithStyle:UIImpactFeedbackStyleHeavy];
    
    // Primes feedback generator for upcoming events and reduces latency
    [self.impactFeedbackGenerator prepare];
}

- (void)didPressButton:(UIButton *)sender
{
    // Triggers haptic
    [self.impactFeedbackGenerator impactOccurred];
}

#pragma mark - Lazy Init
- (UIButton *)button
{
    if (!_button)
    {
        _button = [[UIButton alloc]init];
        _button.translatesAutoresizingMaskIntoConstraints = NO;
        [self.view addSubview:_button];
        [_button.centerXAnchor constraintEqualToAnchor:self.view.centerXAnchor].active = YES;
        [_button.centerYAnchor constraintEqualToAnchor:self.view.centerYAnchor].active = YES;
        [_button setTitle:@"Impact" forState:UIControlStateNormal];
        [_button setTitleColor:[UIColor grayColor] forState:UIControlStateNormal];
    }
    return _button;
}

@end