Objective c：lanscaperight和landscapeleft的代码

Question

我正在创建一个 iPad，我只想有两个方向：横向右和左（不是纵向）...我已经改变了。 plist 文件，但是我应该在代码中写什么？

- (BOOL) shouldAutorotateToInterfaceOrientation: (UIInterfaceOrientation) {interfaceOrientation 返回？？ }

Answer 1

试试这个方法：

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
     return interfaceOrientation == UIInterfaceOrientationLandscapeLeft || interfaceOrientation == UIInterfaceOrientationLandscapeRight;
}

Answer 2

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
    return (interfaceOrientation == UIInterfaceOrientationLandscapeRight || interfaceOrientation == UIInterfaceOrientationLandscapeLeft);
}

如果您希望保持更干净，您还可以使用一个方便的功能：

return UIInterfaceOrientationIsLandscape(interfaceOrientation);