确定应用程序首次运行

Question

I want to determine whether my application being run for the first time, and so it will be hard to pass around it.

The preferences or empty file approaches are not going to work because you can simply clear the application data or delete the empty file.

Also I want to do it offline so no server checking is going to work either.

Maybe it's possible to add some code to the installation of the apk so it will only run once.

So my best bet is spawning a lot of empty files all around and hope the user won't find them, but this is pretty messy.

Has anyone ever done this somehow before? Any suggestions?

Answer 1

The preferences or empty file approaches are not going to work because you can simply clear the application data or delete the empty file.

One possibility is to have a BroadcastReceiver , registered in your manifest, that you do not actually use for anything. On first run of your app, disable that receiver via PackageManager and setComponentEnabledSetting() . On future runs, you can determine if that BroadcastReceiver is already disabled via PackageManager and getReceiverInfo() .

If the user uninstalls and reinstalls the app, the app will return to its original state. Rooted device users can also get past this. Otherwise, this should be reasonably solid.

Answer 2

I know you said you dont want files, but if you create them as local internal storage then the user can not delete them as they wont have access unless it is rooted phone. Clearing data "may" delete them.

There is another solution but it is lengthy one. Use SQLite database.IT is local and I dont think it can be deleted otherwise the whole application will crash