With the design library v 23.1.0 the NavigationView
works with a RecyclerView
.
Also the Header
is now a type of row.
It means that the header could not be immediately available in the view hierarchy.
It can cause issues if you are using methods like navigationView.findViewById(XXX)
to get a view inside the header.
There is a bug in the Google Tracker.
EDIT 12/10/2015: Design library 23.1.1
The 23.1.1 introduces a new API for retrieving header views for NavigationView with getHeaderView()
BEFORE 23.1.1
workaround fot 23.1.0 can be to use a addOnLayoutChangeListener
. Somenthing like:
navigationView.addOnLayoutChangeListener( new View.OnLayoutChangeListener()
{
@Override
public void onLayoutChange( ... )
{
navigationView.removeOnLayoutChangeListener( this );
View view = navigationView.findViewById( ... );
}
} );
Another possible workaround are:
-
remove the
app:headerLayout
attribute from the xml, and then add the header programatically. -
Inflate the headerView programmatically.
Use somenthing like this:
View headerLayout = navigationView.inflateHeaderView(R.layout.navigation_header);
headerLayout.findViewById(xxx);