global varible for application

[shawn peter]

I need a global varible for my android application.is there a good way to do this ?
I have several activities.I need to use this variable for all these activities.

[Maneesh Godbole]

Define it in your strings.xml and access it via context.getString(int id)

[Ulf Dittmer]

Alternatively, if the value can change at runtime, extend Application.