android - NavigationView OnNavigationItemSelectedListener no se llama

android-support-design

Question

Estoy tratando de usar NavigationView desde la biblioteca de diseño de soporte de Android en mi aplicación. Por alguna razón, no se llama al oyente OnNavigationItemSelected . Aqui esta mi codigo

Diseño de actividad

<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<android.support.design.widget.NavigationView
android:id="@+id/navigation_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
app:headerLayout="@layout/drawer_header"
app:menu="@menu/drawer_menu" />
<FrameLayout
android:id="@+id/content_frame"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</android.support.v4.widget.DrawerLayout>

Actividad en Crear ()

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(getLayoutID());
toolbar = (Toolbar) findViewById(R.id.activity_toolbar);
setSupportActionBar(toolbar);
toolbar.inflateMenu(R.menu.common_menu);
final ActionBar actionBar = getSupportActionBar();
if (actionBar != null) {
actionBar.setHomeAsUpIndicator(R.drawable.ic_menu_white_24dp);
actionBar.setDisplayHomeAsUpEnabled(true);
}
drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
navigationView = (NavigationView) findViewById(R.id.navigation_view);
navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
@Override
public boolean onNavigationItemSelected(final MenuItem menuItem) {
Snackbar.make(contentLayout, menuItem.getTitle() + " pressed", Snackbar.LENGTH_LONG).show();
menuItem.setChecked(true);
// allow some time after closing the drawer before performing real navigation
// so the user can see what is happening
drawerLayout.closeDrawer(GravityCompat.START);
mDrawerActionHandler.postDelayed(new Runnable() {
@Override
public void run() {
navigate(menuItem.getItemId());
}
}, DRAWER_CLOSE_DELAY_MS);
drawerLayout.closeDrawers();
return true;
}
});
usernameTextView = (TextView) findViewById(R.id.drawer_header_username);
usernameTextView.setText(getAppDContext().getAccount().getUsername());
}

Answer 1

Cuando crea un diseño XML, debe escribir NavigationView después de BaseLayout ( FrameLayout , LinearLayout , etc.)

<DrawerLayout>
<FrameLayout />
<NavigationView />
</DrawerLayout>

Answer 2

El diseño principal de su actividad debería verse así:

<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/navigationDrawer"
android:layout_width="match_parent"
android:layout_height="match_parent">
<include layout="@layout/activity_main_content" />
<android.support.design.widget.NavigationView
android:id="@+id/navigationView"
style="@style/NavigationView"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="right"
app:headerLayout="@layout/header"
app:menu="@menu/menu_drawer"/>
</android.support.v4.widget.DrawerLayout>

En este NavigationView he vinculado header.xml y menu_drawer.xml (desde la carpeta del menú), por ejemplo menu_drawer.xml:

<menu xmlns:android="http://schemas.android.com/apk/res/android">
<group android:checkableBehavior="single">
<item
android:id="@+id/nav1"
android:checked="true"
android:icon="@drawable/logo"
android:title="Navigation item 1"/>
<item
android:id="@+id/nav2"
android:icon="@drawable/logo"
android:title="Navigation item 2"/>
</group>
</menu>

que tu código java:

public class ActivityMain extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener {
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
setUpToolbar();
setUpNavDrawer();
}
private void setUpNavDrawer() {
NavigationView view = (NavigationView) findViewById(R.id.navigationView);
mDrawerLayout = (DrawerLayout) findViewById(R.id.navigationDrawer);
view.setNavigationItemSelectedListener(this);
mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout, toolbar, R.string.drawerOpen, R.string.drawerClose);
mDrawerLayout.addDrawerListener(mDrawerToggle);
mDrawerToggle.syncState();
}

Comprueba si esto funciona para ti. En mi proyecto funciona a las mil maravillas.

Answer 3

para mí esto hizo el truco!

navigationView = (NavigationView) findViewById (R.id.nav_view);

navigationView.bringToFront ();