Jamieson, Fausset and Brown on 1 Chronicles 6:10

10. he it is that executed the priest's office in the temple that Solomon built in Jerusalem--It is doubtful whether the person in favor of whom this testimony is borne be Johanan or Azariah. If the former, he is the same as Jehoiada, who rendered important public services (2Ki 11:1-20); if the latter, it refers to the worthy and independent part he acted in resisting the unwarrantable encroachments of Uzziah (2Ch 26:17).

in the temple that Solomon built in Jerusalem--described in this particular manner to distinguish it from the second temple, which was in existence at the time when this history was written.