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I am trying to find a means to transfer data from an android lite app to a premium one. I am trying to use ObjectInputStream and ObjectOutputStream, but I run into trouble because I have to have different package names due to google play restrictions, and then my custom objects aren’t recognized. Is there any way around this, so that I can transfer my own objects directly? is there any other method you would recommend?
The simpliest approach would be to let user export the data to SD card and then your premium/paid version of app should let him import this data.