Is it possible to upgrade a user from a non-market version of an application to a market version?

Question

I developed an Android application that is currently in open beta phase, which means that every interested user can download apk from the project website ( http://www.goodnews-mobile.com ). I already provided some updates through the website, and users were able to gracefully update their current installation without losing any application data. Now I want to release a new version of this application in the Android Market.

The question is: can users who install the application from the main page install the new version from the market without deleting the old version?

From a technical point of view, I provided everything necessary to ensure an elegant update (for example, using a private key for signing, which corresponds to market rules, maintaining the name and version code in the manifest, etc.).

Answer 1

If you use the same key to sign your apk, then your users will be able to update through the Market. Just make sure that these are not the test keys you are using (by default, Eclipse uses the default test keys to sign apks before installing them in the emulator).

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