Android - Set fragment id

Question

How can I set a Fragment\'s Id so that I can use getSupportFragmentManager().findFragmentById(R.id.--)?

Answer 1

Turns out you may not need to know the fragment id.

From the docs:

public abstract Fragment findFragmentById (int id)

Finds a fragment that was identified by the given id either
when inflated from XML or as the container ID when added in
a transaction.

The important part is "as the container ID when added in a transaction".

so:

getSupportFragmentManager()
    .beginTransaction()
    .add(R.id.fragment_holder, new AwesomeFragment())
    .commit();

and then

AwesomeFragment awesome = (AwesomeFragment)
     getSupportFragmentManager()
          .findFragmentById(R.id.fragment_holder);

will get you whatever (awesome) fragment is held in R.id.fragment_holder.