A method to tell whether a scope has modules installed or not

Before installing modules to a Scope, it would be useful if we could check whether they have already been installed. A non-ideal workaround would be to do a test injection such as:

public void hasModules(Scope scope) {
  try { 
     scope.getInstance(Foo.class);
     return true;
  } catch(Exception ex) {
       return false;
  }
}

[dmitrynerd]

We use scopes for screens with child fragments to share dependencies among children. For now it’s not easy to determine do we have already opened scope with required dependencies or not. In case when system killed our app in background we must reopen scope and install modules again. But in case of screen rotation our scope remains in application and we don’t need to reopen it.

It would be very useful to check in onCreate() do we have required modules or not.

[terrakok]

It will be very usefull! After rotate screen on android we need check savedState is not null for prevent scope initialization.