iOS修改启动的时候的横竖屏的方法

在iOS目录下面的  RootViewController里面的 

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation

{

    //如果要初始化为横屏

    //return UIInterfaceOrientationIsLandscape( interfaceOrientation );

   //如果要初始化为竖屏

    return UIInterfaceOrientationIsPortrait( interfaceOrientation );

}