onSavedInstanceState vs. SharedPreferences

Question

I have 7 activites all with back and forth navigation buttons between the rest; activites consist of editTexts, Spinners, textViews, TimePickers, DatePickers, and checkboxes

Answer 1

It will depend on how you want to manage the data. Both options (and more) are feasible:

• If you want to fill once and keep the data even if the app gets killed, use SharedPreferences.
• If it's volatile data that will have to be reentered differently some other time (i.e., days later), then use onSavedInstanceState.
• If you want to keep multiple datasets on the same device, then use a SQLiteDatabase