I have done login and registration activity using rest API. But in login I used only Mobile number editext. And in registration I used password. So I want to use that password in login. Means user should enter that password while he used during registraton. So how to do that?
If you're going to store passwords, make sure you store them in EncryptedSharedPreferences. You do not have to encrypt them manually as the library will take care of it.
If you need/want more explanation on this and how it works, check out some articles about it on the web - there are plenty.