苹果爸爸iOS11废弃了UIViewController的automaticallyAdjustsScrollViewInsets属性导致
处理方案：
统一在appDelegate的didFinishLaunchingWithOptions的最开始增加：
Swift： if#available(iOS 11.0, *) {UIScrollView.appearance().contentInsetAdjustmentBehavior=.never}
OC： if (@available(iOS 11.0, *)) {UIScrollView.appearance.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;}