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Saving user data from online services for "offline viewing" in Android applications

I have a web server that stores data for an application that I create on Android tablets. Data changes quite often, but I understand that tablets and phones are not always associated with data, it is necessary, and it would be nice if users already had access to the data that they viewed before.

I want the application to retrieve data from the web server, when it was possible, and when it is not possible, pull it from the SQLite server (or something like that) onto the phone.

Is there such an implementation or practice that has already been created for this? If so, what is the current method for implementing such a function? And can the same method be used to make changes to the data, and then push these changes whenever a data connection is returned?

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