场景:存在一个UILabel实例,对它做缩放,如何清除知道他正在缩放?
个人感觉 用label的bool属性记录最好
-(BOOL)isAnimated { BOOL animated = self.layer.animationKeys.count > 0; for (UIView *subView in self.subviews) { animated |= subView.isAnimated; } return animated; }
没有找到能判断是否正在执行动画的相关的API,只有下面的方法,通过判断isAnimating 来判断
// 设置初始值(最好使用全局或者属性) __block BOOL isAnimating =YES; self.transform = CGAffineTransformMakeScale(6, 6); [UIView animateKeyframesWithDuration:0.333 delay:0 options:0 animations:^{ self.transform = CGAffineTransformMakeScale(1, 1); } completion:^(BOOL finished) { // 成功回调改为NO isAnimating = NO; completion(); }];