Understanding android navigation drawer and fragments -

i'm quite new drawer material , have trouble understanding things: need create activity fragment on it. different selections on drawer must replace current fragment one, drawer in fragment or 1 activity itself. more drawer living in fragment , if not possible create in fragment. asking cause see when initiating drawer need fill parent activity. when tried use navigation drawer template in android studio didn't had use fragment checkbox.

there many ways achieve want. think simplest way is:

1) drawerlayout view should reside in activity (probably base layout).

2) when click on item in draw 2 things happen:

• the fragment replaced (you have 1 layout contain fragment , replace fragment in it).

• the items inside drawer update (if making list set data , call notifydatasetchanged().

don't forget save state can recover in case activity recreated.