请给我反馈，无论是很好的做法，有活性的后退按钮，或只是废话？也许有些Android手机没有回来/返回键？或者，所有型号都有他们？

Please give me feed back whether it's good practice to have a back button in activity, or is it just nonsense? Maybe some android phones don't have back/return key? Or do all models have them?

推荐答案

所有Android手机将有返回键。把一个后退按钮是，国际海事组织，丑陋的和不必要的;你更好地利用你的空间有用的东西。有时候，你的老板只会责成你把一个返回按钮，通常是因为（可惜）大部分的Andr​​oid sketchs都是基于iPhone的那些...那么，为什么我把一个后退按钮的唯一原因是为了不被解雇（好，有时它的更好的被解雇不是成为一个可怜的程序员）。

All android phones will have the back key. Putting a back button is, IMO, ugly and unnecessary; you better use your space with useful stuff. Sometimes your boss will just obligate you to put a Back button, usually because (sadly) most of the android sketchs are based on iPhone's ones... so the only reason why I'd put a back button is to not get fired (well, sometimes it's much better getting fired than becoming a poor programmer).