iOS 按钮添加点击震动

1. 方法说明：

iOS10后系统提供了一套API来简单实现震动：
init时传入一个style定义好的枚举就可以实现不同的震动

typedef NS_ENUM(NSInteger, UIImpactFeedbackStyle) {
    UIImpactFeedbackStyleLight,
    UIImpactFeedbackStyleMedium,
    UIImpactFeedbackStyleHeavy,
    UIImpactFeedbackStyleSoft     API_AVAILABLE(ios(13.0)),
    UIImpactFeedbackStyleRigid    API_AVAILABLE(ios(13.0))
};

// UIImpactFeedbackGenerator is used to give user feedback when an impact between UI elements occurs
UIKIT_EXTERN API_AVAILABLE(ios(10.0)) API_UNAVAILABLE(visionos) API_UNAVAILABLE(tvos, watchos) NS_SWIFT_UI_ACTOR
@interface UIImpactFeedbackGenerator : UIFeedbackGenerator

- (instancetype)initWithStyle:(UIImpactFeedbackStyle)style;

/// call when your UI element impacts something else
- (void)impactOccurred;

/// call when your UI element impacts something else with a specific intensity [0.0, 1.0]
- (void)impactOccurredWithIntensity:(CGFloat)intensity API_AVAILABLE(ios(13.0));

@end

2. 举例

UIImpactFeedbackGenerator *generator = [[UIImpactFeedbackGenerator alloc] initWithStyle:UIImpactFeedbackStyleLight];
[generator impactOccurred];

3. 还有一套API

在AudioTool.framework里还有一套API可以实现震动，这个系统适配多些

#import <AudioToolbox/AudioToolbox.h>
// 类似于老系统来短信的震动
AudioServicesPlaySystemSound(kSystemSoundID_Vibrate);
// 类似touch一次短震
AudioServicesPlaySystemSound(1519);
// 类似touch长按app图标时的震动
AudioServicesPlaySystemSound(1520);
// 类似关iPhone左侧物理静音键的震动
AudioServicesPlaySystemSound(1521);