title: How can we get the activity for callback binding (in a fragment) in firebase phone authentication method
body: <p>Though I used this, getActivity(), getContext() &amp; etc. But no luck.</p>
  
  <pre><code>PhoneAuthProvider.getInstance().verifyPhoneNumber(
                  "91" + mobile,
                  60,
                  TimeUnit.SECONDS,
                  this,
                  mCallbacks
          );
  </code></pre>