I am trying to set up a Navigation Activity in my application. The problem is that I cannot switch between the Menu fragments. It looks like the menu items are not clickable.
I tried to set up the Navigation Activity in the same way I have already set up a menu (Action Bar) before but it's just not working. Also with on Click Listener, the items don't react.
My question is now on how to make the onNavigationItemSelected() method work?
Sorry for the mass of code.
public class NavActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener{
private AppBarConfiguration mAppBarConfiguration;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_nav);
Toolbar toolbar = findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
FloatingActionButton fab = findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
});
DrawerLayout drawer = findViewById(R.id.drawer_layout);
NavigationView navigationView = findViewById(R.id.nav_view);
// Passing each menu ID as a set of Ids because each
// menu should be considered as top level destinations.
mAppBarConfiguration = new AppBarConfiguration.Builder(
R.id.nav_home, R.id.nav_gallery, R.id.nav_slideshow,
R.id.nav_tools, R.id.nav_share, R.id.nav_send)
.setDrawerLayout(drawer)
.build();
NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment);
NavigationUI.setupActionBarWithNavController(this, navController, mAppBarConfiguration);
NavigationUI.setupWithNavController(navigationView, navController);
Toolbar myToolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(myToolbar);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.nav, menu);
return true;
}
@Override
public boolean onSupportNavigateUp() {
NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment);
return NavigationUI.navigateUp(navController, mAppBarConfiguration)
|| super.onSupportNavigateUp();
}
@Override
public boolean onNavigationItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.nav_home: {
Toast.makeText(NavActivity.this, "Anmeldung Fehlgeschlagen", Toast.LENGTH_LONG).show();
return true;
}
case R.id.nav_gallery:
// User chose the "Favorite" action, mark the current item
// as a favorite...
return true;
}
return super.onOptionsItemSelected(item);
}
app_bar_nav.xml
<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".NavActivity">
<com.google.android.material.appbar.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/AppTheme.AppBarOverlay">
<androidx.appcompat.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="@style/AppTheme.PopupOverlay" />
</com.google.android.material.appbar.AppBarLayout>
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="@+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_margin="@dimen/fab_margin"
android:clickable="true"
app:srcCompat="@android:drawable/ic_dialog_email" />
<include layout="@layout/content_nav" />
activity_nav_drawer.xml
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:App="http://schemas.android.com/apk/res-auto"
tools:showIn="navigation_view">
<group android:checkableBehavior="single">
<item
android:id="@+id/nav_home"
android:icon="@drawable/ic_menu_camera"
android:title="@string/menu_home"
android:clickable="true"/>
<item
android:id="@+id/nav_gallery"
android:icon="@drawable/ic_menu_gallery"
android:title="@string/menu_gallery"
android:clickable="true"/>
<item
android:id="@+id/nav_slideshow"
android:icon="@drawable/ic_menu_slideshow"
android:title="@string/menu_slideshow"
App:showAsAction="always"
android:clickable="true"/>
<item
android:id="@+id/nav_tools"
android:icon="@drawable/ic_menu_manage"
android:title="@string/menu_tools"
android:clickable="true"/>
</group>
<item android:title="Communicate">
<menu>
<item
android:id="@+id/nav_share"
android:icon="@drawable/ic_menu_share"
android:title="@string/menu_share"
android:clickable="true"/>
<item
android:id="@+id/nav_send"
android:icon="@drawable/ic_menu_send"
android:title="@string/menu_send"
android:clickable="true"/>
</menu>
</item>
mobile_navigation.xml
<navigation xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/mobile_navigation"
app:startDestination="@+id/nav_home">
<fragment
android:id="@+id/nav_home"
android:name="com.example.login.ui.home.HomeFragment"
android:label="@string/menu_home"
tools:layout="@layout/fragment_home"
android:clickable="true"/>
<fragment
android:id="@+id/nav_gallery"
android:name="com.example.login.ui.gallery.GalleryFragment"
android:label="@string/menu_gallery"
tools:layout="@layout/fragment_gallery" />
<fragment
android:id="@+id/nav_slideshow"
android:name="com.example.login.ui.slideshow.SlideshowFragment"
android:label="@string/menu_slideshow"
tools:layout="@layout/fragment_slideshow" />
<fragment
android:id="@+id/nav_tools"
android:name="com.example.login.ui.tools.ToolsFragment"
android:label="@string/menu_tools"
tools:layout="@layout/fragment_tools" />
<fragment
android:id="@+id/nav_share"
android:name="com.example.login.ui.share.ShareFragment"
android:label="@string/menu_share"
tools:layout="@layout/fragment_share" />
<fragment
android:id="@+id/nav_send"
android:name="com.example.login.ui.send.SendFragment"
android:label="@string/menu_send"
tools:layout="@layout/fragment_send" />
acitivty_nav.xml
<androidx.drawerlayout.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:openDrawer="start">
<com.google.android.material.navigation.NavigationView
android:id="@+id/nav_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
android:fitsSystemWindows="true"
app:headerLayout="@layout/nav_header_nav"
app:menu="@menu/activity_nav_drawer" />
<include
layout="@layout/app_bar_nav"
android:layout_width="match_parent"
android:layout_height="match_parent" />
