NavigationView get/find header layout

Question

In my NavigationView I have a header layout with id \'viewId\' with active buttons. To setup those buttons, I do the following in activity\'s onPostCreate:

Answer 1

Kotlin version.

val navView: NavigationView = findViewById(R.id.nav_view)       
// set User Name
val headerView: View = navView.getHeaderView(0)
headerView.txtUserName.text = "User Name Goes here"

Answer 2

Now with the 23.1.1 release of the design support library, you can use

NavigationView navigationView = (NavigationView) findViewById(R.id.your_nav_view_id);
View header = navigationView.getHeaderView(0)
TextView text = (TextView) header.findViewById(R.id.textView);

Answer 3

This is how I did it using ButterKnife and it works for me.

protected static class HeaderViewHolder {

    @BindView(R.id.button)
    Button button;

    HeaderViewHolder(View view) {
        ButterKnife.bind(this, view);
    }
}

and then use this view holder like this :

View header = navigationView.getHeaderView(0);
headerViewHolder = new HeaderViewHolder(header);

Answer 4

NavigationView navigationView = findViewById(R.id.your_nav_view);
View header = navigationView.getHeaderView(0);
TextView textUsername = header.findViewById(R.id.textView);
textUsername.setText("you text here ");

Answer 5

For me that was the same situation with 23.1.0, after of update the null pointer exception become. In this case the NavigatorView look like:

<android.support.design.widget.NavigationView
  android:id="@+id/navigation_view"
  android:layout_height="match_parent"
  android:layout_width="wrap_content"
  android:layout_gravity="start"
  android:fitsSystemWindows="true"
  app:headerLayout="@layout/nav_header"
  app:menu="@menu/menu_nav"/>

I tried the solution proposal by ianhanniballake but it does not work. Then I inflated with the sentence:

LayoutInflater.from(getContext()).inflate(R.layout.nav_header, mNavigationView);

After that, I can find by id all views defined in nav_heardlayout .

Answer 6

In Kotlin @Francois Dermu code be like

val navigationView : NavigationView = findViewById(R.id.your_nav_view_id);
val header = navigationView.getHeaderView(0)
val textView = header.findViewById<TextView>(R.id.textView)