In my Android app I have a multi step login procedure:
- Enter a id, and send to backend:
firstCall(id)
- If id was not found, request correct/another id
- if id correct, continue step with 2.
- Enter Password and send (hash) to backend
secondCall(password)
- if password wrong, request again (limited)
- if password correct continue with 3.
- Backend responds with a time limited token for this session (sessionToken)
- Do one thing with this token
There are wrongId()
and correctId()
callbacks for 1. There are wrongPassword()
and correctPassword()
callbacks for 2.
I have implemented this already successfully in my Android app by means of using MVP pattern.
Since I use this login procedure on different Activities (all in MVP), I have a lot of duplicate code. I extracted this login to a separat class, what would be used still in the presenter. But then I have the problem of requesting wrong passwords?
Do I need the callbacks implemented in all my presenters? How would I notify the currently used presenter of wrong passwords etc?
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