这应该是iOS11的bug
在headerview里添加如下代码即可解决
#ifdef __IPHONE_11_0
@interface CustomLayer : CALayer
@end
@implementation CustomLayer
- (CGFloat) zPosition {
return 0;
}
@end
#endif
@interface XXHeaderView()
@end
@implementation XXHeaderView
#ifdef __IPHONE_11_0
+ (Class)layerClass {
return [CustomLayer class];
}
#endif
@end
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