问题
Is it a requirement for iPad apps to be able to rotate?
I am looking at a few apps, one example is http://squareup.com they only have one rotation, while others have rotation. What is the exact spec?
回答1:
It's not required but I've seen apps butchered for it in reviews. I believe I saw that for the app Facepad.
回答2:
You do not have to support rotation; however almost all apps do.
回答3:
At least support 180° rotation. Preferably 360°, but this depends on the content your app shows. Fir example, Keynote offers only landscape \w 180° rotation because slideshows are always in landscape.
It's not a requirement, but how'd you like it if Safari didn't rotate? When designing a UI, imagine you are the user, the one you make the app for. How does the user like it? And make it like that.
回答4:
It's highly recommended to. If you don't want to do the work of re-laying-out your interface from portrait to landscape or vice versa, you can at least support the 180-degree rotation of whatever orientation you do want to use: landscape-right if it's set up for landscape-left, or portrait-upside-down if it's set up for portrait. It's the user-friendly thing to do and really not complicated to implement.
回答5:
I don't think GarageBand suffers for not supporting it. It's right for it to be case-by-case
来源：https://stackoverflow.com/questions/4708687/is-rotation-a-requirement-for-ipad-apps