使用cocoaPods下载下来POP动画库，想手动导入到原来的工程，但是到了一堆错，什么文件没找到之类的。最后索性修改了所有的报错头文件：

修改POP.h后 : 

#import "POPAnimatableProperty.h"

#import "POPAnimation.h"

#import "POPAnimationEvent.h"

#import "POPAnimationExtras.h"

#import "POPAnimationTracer.h"

#import "POPAnimator.h"

#import "POPBasicAnimation.h"

#import "POPCustomAnimation.h"

#import "POPDecayAnimation.h"

#import "POPDefines.h"

#import "POPGeometry.h"

#import "POPLayerExtras.h"

#import "POPPropertyAnimation.h"

#import "POPSpringAnimation.h"

导入FaceBook POP报错