Android - error handler class

We would like to develop a generic error handler which would simply show error Id and message in a page (this page is already designed, we need only associated java class). As part of it, we are looking for someone who can develop following simple components: 1) Provide associate class for our [login to view URL] (it can be Fragment, Activity or FragmentActivity - also see point 2.a) a) On back pressed from this class, take user to an existing fragment 2) Sample invocations a) Provide sample code snippet to instantiate /invoke the error handler created in 1.a from our existing page types (Fragment, FragmentActivity, Activity) We are looking for someone who can quickly deliver these tasks. Thanks.