我正在尝试在CAAnimation完成后执行完成块.但是,似乎在我的动画完成之前调用了动画块.但动画仍然正确.
[CATransaction begin];
[self.view.layer addAnimation:self.dropAndBounceAnimation forKey:@"appearance"];
[CATransaction setCompletionBlock:completionBlock];
[CATransaction commit];
dropAndBounceAnimation是position.y上的CAKeyFrameAnimation,具有固定的持续时间.