什么是self.view.traitcollection.horizontalsizeclass的目标c

Question

swift语句的obj c代码是什么？

 if (self.view.traitCollection.horizontalSizeClass == UIUserInterfaceSizeClass.Compact)

到目前为止我发现的内容在下面得到了证明，但是当我添加self.view

时，它会出现错误

    if ([self.view UITraitCollection traitCollectionWithHorizontalSizeClass:UIUserInterfaceSizeClassCompact])
    {
        NSLog(@"Compact");
    }

Answer 1

尝试此

if (self.view.traitCollection.horizontalSizeClass == UIUserInterfaceSizeClassCompact) {
  // do your stuff
}

希望它有效