java - Call getFragmentManager() without extending Fragment -

java - Call getFragmentManager() without extending Fragment -

i have class handling database in android app. when database changes, i'd update fragment displaying info frogment. approach has been give fragment tag , find fragment next code:

fragmentmanager manager = getfragmentmanager(); fragment fragment = manager.findfragmentbytag("schedule"); if (fragment instanceof schedulefragment){ schedulefragment fr = (schedulefragment)fragment; fr.scheduleupdated(); }

however, long database class not extension of fragment, compiler refuses recognise getfragmentmanager(). me makes no sense extend fragment, database class no fragment, simple helper class manage database. possible reference fragment without extending fragment? or bad practice , should done in way?

also, possible reference fragment static method?

try using localbroadcast manager. when database changes laumch broadcast intent. registere in "schedule" fragment , can handle database changes. refer link more localbroadcast manager how utilize localbroadcastmanager? http://www.vogella.com/tutorials/androidbroadcastreceiver/article.html

java android android-fragments