Don't collapse Toolbar when RecyclerView fits the screen

Question

I\'ve made an app using Android Design Library, with a Toolbar and TabLayout.
Actually 2 tabs are present, both with 2 RecyclerView, that automati

Answer 1

You can check if the last item in RecyclerView is visible. If it's not then turn off scrolling programmatically using this method:

            //turn off scrolling
            AppBarLayout.LayoutParams toolbarLayoutParams = (AppBarLayout.LayoutParams) mToolbar.getLayoutParams();
            toolbarLayoutParams.setScrollFlags(0);
            mToolbar.setLayoutParams(toolbarLayoutParams);

            CoordinatorLayout.LayoutParams appBarLayoutParams = (CoordinatorLayout.LayoutParams) appBarLayout.getLayoutParams();
            appBarLayoutParams.setBehavior(null);
            appBarLayout.setLayoutParams(appBarLayoutParams);