（iOS乱七八糟的问题）开发中遇到的一些小问题

开机图片不显示
brand assets 添加图片之后开机图片不显示，这个时候删掉APP 重新装一次就好了
iphone x 上下黑块
iPhone x 上下黑块 加入iPhone x 的启动图即可(1125*2436)
m文件找不到
m文件找不到 compile Scources add一下

headView顺tableview滚动

- (void)scrollViewDidScroll:(UIScrollView *)scrollView {
    CGFloat sectionHeaderHeight = 60;//sectionHeadView 的高度
    if (scrollView.contentOffset.y<=sectionHeaderHeight&&scrollView.contentOffset.y>=0) {
        scrollView.contentInset = UIEdgeInsetsMake(-scrollView.contentOffset.y, 0, 0, 0);
    } else if (scrollView.contentOffset.y>=sectionHeaderHeight) {
        scrollView.contentInset = UIEdgeInsetsMake(-sectionHeaderHeight, 0, 0, 0);
    }
}

UILabel *lab1 = [UILabel new];
   lab1.text = @"123456789";
   lab1.font = Font(12);
   lab1.textColor = [UIColor redColor];
   lab1.layer.masksToBounds = YES;
   [lab1.layer setCornerRadius:5];
   lab1.layer.borderColor = [UIColor grayColor].CGColor;
   lab1.layer.borderWidth = 1;
   [self.view addSubview:lab1];
   
   
   
   [lab1 mas_makeConstraints:^(MASConstraintMaker *make) {
       make.left.equalTo(self.view).offset(20);
       make.top.equalTo(_bodyTopView.mas_bottom).offset(30);
       make.height.mas_equalTo(20);
   }];