iOS11 tableView距离电量栏之间有空隙，肿么办？😰

处理方法 

NSString *version = [UIDevice currentDevice].systemVersion;

if (version.doubleValue >= 11.0) {

self.mainTableView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;

} else {

self.automaticallyAdjustsScrollViewInsets = NO;

}