Control button state in login/register fragments

[2tanayk]

button in these fragments should be disabled while sign in/up is in progress to avoid creating multiple instances of the next Activity and to avoid strange results.

[Fr1x3]

As it is I don't think this is an issue as you've already handled validation. Therefore, moving to next activity only happens when the authentication passes.

[2tanayk]

no see in case of say a poor connection the authentication takes time and if one hits the button multiple times, the same action repeats leading to multiple instances of the next activity being created.