On which Android version can I start using the geolocation feature for an application I develop?

On whic开发者_Python百科h Android version can I start using the geolocation feature for an application I develop?

I'm not sure what exactly you mean by "geolocation feature", but you can look at the api docs to see at which API level each feature was added. For example, the LocationManager is available since API level 1, so for all versions of Android.