问题
My company would like to give an Android device to a group of our selected customers.
Doing that, we would like to provide users with our mobile app. The app is already on Google Play, but we would like to avoid users downloading and installing by themselves. We prefer to give the device ready, with the app already installed.
We found several ways to manually install an APK on the phone without having to login to the market. But it seems that doing that, the user will not be able to update the app via Google Play, as the app would not be recognized as installed.
Any idea?
回答1:
As per January 2015, this appears to be impossible. Here is the response I got from Google Play Developer support:
Side-loaded apps do not update via the Play Store. If you would like the app to update, you will need to uninstall the app on your phone and reinstall the app via the Play Store.
I wonder if anyone found a way around this?
回答2:
You may install Titanium Backup if your phone is rooted, then long press on your side loaded app package and select "Attach to market" option. Now you may receive updates via Google Play.
I don't recommend this, I mean never install cracked or patched apps because of copyright or security risks, but installing a Modded version of Google Play can make patched side loaded apps to be upgraded after attaching them to market via Titanium Backup. This is not needed for purchased apps because they are registered in your Google account, so attaching to market will be enough.
回答3:
To summarize the answer from @Android-Developer and OP's comment discussion:
Google Play recognizes the app signature of APKs regardless of the installation source. As long as you use the same package name and keystore when generating your APK, Google Play will be able to detect newer versions and trigger an update.
To install the app without logging in to a Google account, enable the "Install from unknown sources" option in Settings. You can disable it once the installation is complete.
来源：https://stackoverflow.com/questions/14746330/android-sideloading-applications-and-keep-them-up-to-date-via-google-play