Navigation Activity

Question

I would like some help when I open my Navigation Activity after login I get it like this: But I wish he was already called that with one of the pages marked like this:

activity_main_drawer.xml

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">

    <group android:checkableBehavior="single">
        <item
            android:id="@+id/nav_abertas"
            android:title="Consultas Abertas"
            android:visible="true" />
        <item
            android:id="@+id/nav_fechadas"
            android:title="Consultas Fechadas" />
        <item
            android:id="@+id/nav_medicos"
            android:title="Médicos" />
    </group>

</menu>

Answer 1

Your Activity, is implementing NavigationView.OnNavigationItemSelectedListener, right?

Then you will have a method like this:

@Override
public boolean onNavigationItemSelected(MenuItem item) {
        // Handle navigation view item clicks here.
        int id = item.getItemId();

        if (id == R.id.consultas_abertas) {
           FragmentManager fragmentManager = getSupportFragmentManager();
            fragmentManager.beginTransaction()
            .replace(R.id.container, ConsultaAbertasFragment, name)
            .commit();
        }

        //Resto do código

        drawer.closeDrawer(GravityCompat.START);
        return true;
}

The system will verify which menu id was clicked, and will call the Fragment corresponding to it, and the system itself will take care of selecting the Fragment that was called.

The XML of your Menu, should look something like this:

<menu
    xmlns:android="http://schemas.android.com/apk/res/android">

    <group android:checkableBehavior="single">

        <item
            android:id="@+id/consultas_abertas"
            android:title="Consultas Abertas" />

        //Resto do código

    </group>
</menu>

And finally, in the XML of your Activity, you should have the Framelayout where the Fragments will be loaded, referring to this id R.id.container, example:

<android.support.v4.widget.DrawerLayout
        android:id="@+id/drawer_layout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        tools:openDrawer="start">

        <FrameLayout
            android:id="@+id/container"
            android:layout_width="match_parent"
            android:layout_height="match_parent" />

 </android.support.v4.widget.DrawerLayout>