SafeArea

在适配iPhone X过程中，发现很多地方需要针对系统做判断处理，UIViewController+SafeArea解决SafeArea向低版本兼容问题

Requirements

• Xcode9.0+
• iOS8.0+

Communication

有任何问题可以通过issue或者QQ(389936133)的方式

Usage

[self.contentView addSubview:self.tableView];

  UIScrollView *scrollView = [UIScrollView new];
  scrollView.backgroundColor = [UIColor redColor];
  [self.contentView addSubview:scrollView];

  [scrollView mas_makeConstraints:^(MASConstraintMaker *make) {
      make.left.right.and.top.equalTo(self.contentView);
      make.height.mas_equalTo(60);
  }];
  [self.tableView mas_makeConstraints:^(MASConstraintMaker *make) {
      make.left.bottom.and.right.equalTo(self.contentView);
      make.top.equalTo(scrollView.mas_bottom);
  }];