Android上用于在整个应用程序会话中保持活动deathes / restarts之间的数据的最佳做法是什么？

We’re designing an Android app that
has several activities which are
working in a wizard like way – user
should pass from the activity #1 to
activity #5 to get to the final
activity (#6).

您确定要将它们作为单独的活动实施吗？为什么不使用ViewFlipper或其他东西在向导状态之间移动单个活动？

Are our expectations wrong on this
approach (we think Application class
instance always lives for the whole
app session)?

Application类实例始终适用于整个应用程序会话AFAIK.但是,一旦您的所有活动都被销毁,应用程序也将被销毁.

So the question is – what is the best
practices on Android to keep data
between activities deathes/restarts
for the whole application session?

>使用服务 – 如果这被踢出RAM,只需从头开始
>使用数据库
>使用文件

或者,最好：在这种情况下不要使用多个活动.向导是一个逻辑的东西;如此对待并使其成为一项活动.通过onSaveInstanceState()保持你的状态,你就被设置了.