iOS为UIview增加触感反馈动画和震动效果

//
//  UIView+Event.h
//  testTabBar
//
//  Created by vanmr on 2020/3/18.
//  Copyright © 2020 xdhl. All rights reserved.
//


#import <UIKit/UIKit.h>

NS_ASSUME_NONNULL_BEGIN

@interface MTAddEventMaker : NSObject

@property(nonatomic, copy) void(^mt_touchBeginBlock)(UIGestureRecognizer *gesture);

@property (nonatomic, copy) void(^mt_touchEndBlock)(UIGestureRecognizer *gesture);

@end

NS_ASSUME_NONNULL_END

NS_ASSUME_NONNULL_BEGIN

@interface UIView (addEvent)

@property (nonatomic, strong) MTAddEventMaker *mt_eventMaker;

@end

NS_ASSUME_NONNULL_END

//
//  UIView+Event.m
//  testTabBar
//
//  Created by vanmr on 2020/3/18.
//  Copyright © 2020 xdhl. All rights reserved.
//

#import "UIView+addEvent.h"
#import <objc/runtime.h>

static NSString *tap_propertyKey = @"MT_add_Tab_Gesture";
static NSString *tap_block_propertyKey = @"MT_add_Tab_Gesture_block";
static NSString *longPress_propertyKey = @"MT_add_longPress_Gesture";
static NSString *group_animation_propertyKey = @"key_add_gruop_animation";
static NSString *feedback_generator_propertyKey = @"key_add_feedback_generator";
static NSString *event_maker_propertyKey = @"key_add_event_maker";

@implementation MTAddEventMaker

@end

@implementation UIView (addEvent)

- (CAAnimationGroup *)createGroupAnimationScaleFromValue:(CGFloat)scaleFromValue
                                                 toValue:(CGFloat)scaleToValue
                                        opacityFromValue:(CGFloat)opacityFromValue
                                          opacityToValue:(CGFloat)opacityToValue
                                                duration:(CGFloat)duration
                                             autoReverse:(BOOL)isAutoReverse
                                  animationCompleteBlock:(void (^)(void))completeBlock {
    [self.layer removeAnimationForKey:group_animation_propertyKey];

    CABasicAnimation *scaleAnimation = [CABasicAnimation animationWithKeyPath:@"transform.scale"];
    [scaleAnimation setFromValue:@(scaleFromValue)];
    [scaleAnimation setToValue:@(scaleToValue)];

    CABasicAnimation *opacityAnimation = [CABasicAnimation animationWithKeyPath:@"opacity"];
    [opacityAnimation setFromValue:@(opacityFromValue)];
    [opacityAnimation setToValue:@(opacityToValue)];

    CAAnimationGroup *group = [CAAnimationGroup animation];
    group.animations = @[scaleAnimation, opacityAnimation];
    group.duration = duration;
    group.removedOnCompletion = NO;
    if (isAutoReverse) {
        group.autoreverses = YES;
    }
    group.fillMode = kCAFillModeForwards;
    [self.layer addAnimation:group forKey:group_animation_propertyKey];
    CGFloat delayTime = duration;
    if (isAutoReverse) {
        delayTime = 2 * duration;
    }
    [self performSelector:@selector(animationComplete:) withObject:completeBlock afterDelay:delayTime];
    return group;
}

- (void)animationComplete:(void (^)(void))completeBlock {
    if (completeBlock) {
        completeBlock();
    }
}

- (void)setFeedbackGenerator:(UIImpactFeedbackGenerator *)feedbackGenerator {
    if (!feedbackGenerator) {
        return;
    }
    objc_setAssociatedObject(self, (__bridge const void *_Nonnull)(feedback_generator_propertyKey), feedbackGenerator, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}

- (UIImpactFeedbackGenerator *)feedbackGenerator {
    UIImpactFeedbackGenerator *_feedbackRator = objc_getAssociatedObject(self, CFBridgingRetain(feedback_generator_propertyKey));
    if (!_feedbackRator) {
        _feedbackRator = [[UIImpactFeedbackGenerator alloc] initWithStyle:UIImpactFeedbackStyleLight];
        objc_setAssociatedObject(self, (__bridge const void *_Nonnull)(feedback_generator_propertyKey), _feedbackRator, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
    }
    return _feedbackRator;
}


- (void)setTabGesture:(UITapGestureRecognizer *)tabGesture {
    if (!tabGesture) {
        return;
    }
    objc_setAssociatedObject(self, (__bridge const void *_Nonnull)(tap_propertyKey), tabGesture, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}

- (UITapGestureRecognizer *)tabGesture {
    UITapGestureRecognizer *_tabGesture = objc_getAssociatedObject(self, CFBridgingRetain(tap_propertyKey));
    if (!_tabGesture) {
        _tabGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(touchViewGesture:)];
        objc_setAssociatedObject(self, (__bridge const void *_Nonnull)(tap_propertyKey), _tabGesture, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
    }
    return _tabGesture;
}

- (void)setMt_eventMaker:(MTAddEventMaker *)mt_eventMaker {
    if (!mt_eventMaker) {
        return;
    }
    objc_setAssociatedObject(self, (__bridge const void *_Nonnull)(event_maker_propertyKey), mt_eventMaker, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}

- (MTAddEventMaker *)mt_eventMaker {
    MTAddEventMaker *_eventMaker = objc_getAssociatedObject(self, CFBridgingRetain(event_maker_propertyKey));
    if (!_eventMaker) {
        _eventMaker = [[MTAddEventMaker alloc] init];

        [self addGestureRecognizer:self.tabGesture];
        [self addGestureRecognizer:self.longPressGesture];
        self.userInteractionEnabled = YES;
        
        objc_setAssociatedObject(self, (__bridge const void *_Nonnull)(event_maker_propertyKey), _eventMaker, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
    }
    return _eventMaker;
}

- (void)setLongPressGesture:(UILongPressGestureRecognizer *)longPressGesture {
    if (!longPressGesture) {
        return;
    }
    objc_setAssociatedObject(self, (__bridge const void *_Nonnull)(longPress_propertyKey), longPressGesture, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}

- (UILongPressGestureRecognizer *)longPressGesture {
    UILongPressGestureRecognizer *_longPressGesture = objc_getAssociatedObject(self, CFBridgingRetain(longPress_propertyKey));
    if (!_longPressGesture) {
        _longPressGesture = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPressViewGesture:)];
        _longPressGesture.minimumPressDuration = 0.3;
        objc_setAssociatedObject(self, (__bridge const void *_Nonnull)(longPress_propertyKey), _longPressGesture, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
    }
    return _longPressGesture;
}

- (void)touchViewGesture:(UITapGestureRecognizer *)tapGesture {
    self.userInteractionEnabled = NO;

    if (self.mt_eventMaker.mt_touchBeginBlock) {
        self.mt_eventMaker.mt_touchBeginBlock(tapGesture);
    }

    [self.feedbackGenerator impactOccurred];
    [self createGroupAnimationScaleFromValue:1.0 toValue:0.95 opacityFromValue:1.0 opacityToValue:0.7 duration:0.2 autoReverse:YES animationCompleteBlock:^{
        if (self.mt_eventMaker.mt_touchEndBlock) {
            self.mt_eventMaker.mt_touchEndBlock(tapGesture);
        }
        self.userInteractionEnabled = YES;
    }];
}

- (void)longPressViewGesture:(UILongPressGestureRecognizer *)longPressGesture {
    if (longPressGesture.state == UIGestureRecognizerStateBegan) {
        self.userInteractionEnabled = NO;

        if (self.mt_eventMaker.mt_touchBeginBlock) {
            self.mt_eventMaker.mt_touchBeginBlock(longPressGesture);
        }
        [self createGroupAnimationScaleFromValue:1.0 toValue:0.95 opacityFromValue:1.0 opacityToValue:0.7 duration:0.3 autoReverse:NO animationCompleteBlock:nil];
        [self.feedbackGenerator impactOccurred];
    }

    if (longPressGesture.state == UIGestureRecognizerStateEnded) {
        [self createGroupAnimationScaleFromValue:0.95 toValue:1.0 opacityFromValue:0.7 opacityToValue:1.0 duration:0.3 autoReverse:NO animationCompleteBlock:^{
            if (self.mt_eventMaker.mt_touchEndBlock) {
                self.mt_eventMaker.mt_touchEndBlock(longPressGesture);
            }
        }];
        self.userInteractionEnabled = YES;
    }
}

@end