iOS抖音双击点赞动画

iOS抖音双击点赞动画，代码如下

//记录时间处理单击双击
@property (nonatomic, assign) NSTimeInterval lastTapTime;
//记录最后的点赞位置
@property (nonatomic, assign) CGPoint lastTapPoint;
//初始化
- (instancetype)init {
    self = [super init];
    if (self) {
        //初始化
        self.lastTapTime = 0;
        _lastTapPoint = CGPointZero;
        //点击手势
       UITapGestureRecognizer * singleTapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleGesture:)];
       [self addGestureRecognizer:_singleTapGesture];
    }
    return self;
}
//点击手势
- (void)handleGesture:(UITapGestureRecognizer *)sender {
 //获取点击坐标，用于设置爱心显示位置
    CGPoint point = [gestureControl.singleTap locationInView:self];
    
    //获取当前时间
    NSTimeInterval time = [[NSDate dateWithTimeIntervalSinceNow:0] timeIntervalSince1970];
    //判断当前点击时间与上次点击时间的时间间隔
    if(time - self.lastTapTime > 0.25f) {
        //推迟0.25秒执行单击方法
        [self performSelector:@selector(singleTapAction) withObject:nil afterDelay:0.25f];
    }else {
        //取消执行单击方法
        [NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(singleTapAction) object: nil];
       
        //执行双击动画
        [self showLikeViewAnim:point oldPoint:_lastTapPoint AndSubView:self];
        
    }
    //更新上一次点击位置
    _lastTapPoint = point;
    //更新上一次点击时间
    self.lastTapTime =  time;
}

//单击手势
-(void)singleTapAction{
    
}

/**
 抖音双击连击爱心动画

 @param newPoint 新的坐标位置
 @param oldPoint 旧的坐标位置
 @param subView 添加到的父视图view
 */
- (void)showLikeViewAnim:(CGPoint)newPoint oldPoint:(CGPoint)oldPoint AndSubView:(UIView *)subView{
    UIImageView *likeImageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"icon_home_like_after"]];//点赞图片
    CGFloat k = ((oldPoint.y - newPoint.y)/(oldPoint.x - newPoint.x));
    k = fabs(k) < 0.5 ? k : (k > 0 ? 0.5f : -0.5f);
    CGFloat angle = M_PI_4 * -k;
    likeImageView.frame = CGRectMake(newPoint.x, newPoint.y, 80, 80);
    likeImageView.transform = CGAffineTransformScale(CGAffineTransformMakeRotation(angle), 0.8f, 1.8f);
    [subView addSubview:likeImageView];
    [UIView animateWithDuration:0.2f
                          delay:0.0f
         usingSpringWithDamping:0.5f
          initialSpringVelocity:1.0f
                        options:UIViewAnimationOptionCurveEaseOut
                     animations:^{
                         likeImageView.transform = CGAffineTransformScale(CGAffineTransformMakeRotation(angle), 1.0f, 1.0f);
                     }
                     completion:^(BOOL finished) {
                         [UIView animateWithDuration:0.5f
                                               delay:0.5f
                                             options:UIViewAnimationOptionCurveEaseOut
                                          animations:^{
                                              likeImageView.transform = CGAffineTransformScale(CGAffineTransformMakeRotation(angle), 3.0f, 3.0f);
                                              likeImageView.alpha = 0.0f;
                                          }
                                          completion:^(BOOL finished) {
                                              [likeImageView removeFromSuperview];
                                          }];
                     }];
}

GitHub地址：https://github.com/sshiqiao/douyin-ios-objectc