ViewPager in navigation drawer - Please give some advice

ViewPager in navigation drawer - Please give some advice - java

So overall idea is to in first (main page) have swiping gallery and I did it BUT when I choose options from navigation menu I'm having pager layout witch is my navigation drawer layout and its blank cuz just contain android.support.v4.view.ViewPager
CONTENT_MAIN.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.view.ViewPager
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"
android:orientation="vertical"
android:id="#+id/pager"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:context="com.example.marcj.justtest.drawer"
>
</android.support.v4.view.ViewPager>
But now I want to go to my navigation drawer choose on of the options there and have OTHER swiping gallery.. but I don't know How to do it because when I choose option for example SOLD I'm having blank layout.
enter image description here
drawer.java file:
package com.example.marcj.justtest;
import java.math.BigDecimal;
public class drawer extends AppCompatActivity implements
NavigationView.OnNavigationItemSelectedListener {
ViewPager viewPager;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_drawer);
viewPager = (ViewPager) findViewById(R.id.pager);
PageAdapter padapter = new PageAdapter(getSupportFragmentManager());
viewPager.setAdapter(padapter);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open,
R.string.navigation_drawer_close);
drawer.addDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView)
findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
View headerView = navigationView.getHeaderView(0);
String username = getIntent().getStringExtra("username");
TextView text2 = (TextView) headerView.findViewById(R.id.TVusername);
text2.setText(username);
}
#Override
public void onBackPressed() {
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {
super.onBackPressed();
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.navigation, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
} else if (id == R.id.action_contact) {
Toast.makeText(this, "Contact Form", Toast.LENGTH_SHORT).show();
Intent i = new Intent(drawer.this, AcContact.class);
startActivity(i);
contact contactForm = new contact();
FragmentManager manager = getSupportFragmentManager();
manager.beginTransaction().replace(R.id.pager,
contactForm, contactForm.getTag()).commit();
} else if (id == R.id.nav_clicked) {
}
return super.onOptionsItemSelected(item);
}
#SuppressWarnings("StatementWithEmptyBody")
#Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
if (id == R.id.nav_homepage) {
Intent i= new Intent (drawer.this, drawer.class );
startActivity(i);
} else if (id == R.id.nav_clicked) {
Toast.makeText(this, "Clicked Items", Toast.LENGTH_SHORT).show();
clicked clickedItems = new clicked();
FragmentManager manager = getSupportFragmentManager();
manager.beginTransaction().replace(R.id.pager,
clickedItems, clickedItems.getTag()).commit();
} else if (id == R.id.nav_won) {
Toast.makeText(this, "Won Items", Toast.LENGTH_SHORT).show();
won wonItems = new won();
FragmentManager manager = getSupportFragmentManager();
manager.beginTransaction().replace(R.id.pager,
wonItems, wonItems.getTag()).commit();
} else if (id == R.id.nav_selling) {
Toast.makeText(this, "Item that you Selling",
Toast.LENGTH_SHORT).show();
selling sellingItems = new selling();
FragmentManager manager = getSupportFragmentManager();
manager.beginTransaction().replace(R.id.pager,
sellingItems, sellingItems.getTag()).commit();
} else if (id == R.id.nav_sold) {
Toast.makeText(this, "Sold Items", Toast.LENGTH_SHORT).show();
sold soldItems = new sold();
FragmentManager manager = getSupportFragmentManager();
manager.beginTransaction().replace(R.id.pager,
soldItems, soldItems.getTag()).commit();
} else if (id == R.id.nav_topup) {
Toast.makeText(this, "Top-Up Clicks", Toast.LENGTH_SHORT).show();
topup topupItems = new topup();
FragmentManager manager = getSupportFragmentManager();
manager.beginTransaction().replace(R.id.pager,
topupItems, topupItems.getTag()).commit();
} else if (id == R.id.nav_share) {
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
}
PageAdapter.java
package com.example.marcj.justtest;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
public class PageAdapter extends FragmentPagerAdapter {
public PageAdapter (FragmentManager fm){
super(fm);
}
public Fragment getItem (int arg0){
switch (arg0){
case 0:
return new FragmentOne();
case 1:
return new FragmentTwo();
case 2:
return new FragmentThree();
default:
break;
}
return null;
}
public int getCount(){
return 3;
}
}
Activity_drawer.xml
<?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"
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">
<include
layout="#layout/app_bar_main"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<android.support.v4.view.ViewPager
android:id="#+id/view_pager"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<android.support.design.widget.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_main"
app:menu="#menu/activity_drawer_menu" />
</android.support.v4.widget.DrawerLayout>
app_bar_main.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.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"
android:fitsSystemWindows="true"
tools:context=".drawer">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AppTheme">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="#style/AppTheme" />
</android.support.design.widget.AppBarLayout>
<include layout="#layout/content_main" />
</android.support.design.widget.CoordinatorLayout>
activity_drawer.xml
<?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"
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">
<include
layout="#layout/app_bar_main"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<android.support.v4.view.ViewPager
android:id="#+id/view_pager"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<android.support.design.widget.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_main"
app:menu="#menu/activity_drawer_menu" />
</android.support.v4.widget.DrawerLayout>

activity_drawer file:
android:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:openDrawer="start">
<include
layout="#layout/app_bar_main"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<android.support.v4.view.ViewPager
android:id="#+id/view_pager"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<android.support.design.widget.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_main"
app:menu="#menu/activity_drawer_menu" />
content_main
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:id="#+id/pager"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:context="com.example.marcj.justtest.drawer"
>

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enter image description hereI followed a tutorial on how to add a side navigation drawer but after adding it properly i can`t interact no more with the textedits/maps etc in my fragments, it´s not registering touch for that layout only for the drawer buttons itself.
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Activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
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=".MainActivity">
<com.google.android.material.bottomnavigation.BottomNavigationView
android:id="#+id/bottomNavigationView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:itemBackground="#drawable/drawable_selector"
app:itemIconTint="#drawable/color_selector"
app:itemTextColor="#drawable/color_selector"
app:menu="#menu/bottom_nav_menu"/>
<FrameLayout
android:id="#+id/frameLayout"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toTopOf="#+id/bottomNavigationView"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
</FrameLayout>
<androidx.drawerlayout.widget.DrawerLayout
android:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:openDrawer="start">
<LinearLayout
android:layout_height="match_parent"
android:layout_width="match_parent"
android:orientation="vertical">
<androidx.appcompat.widget.Toolbar
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="#color/purple_200"
android:id="#+id/toolbar"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
android:elevation="4dp"/>
<FrameLayout
android:id="#+id/fragment_container"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</LinearLayout>
<com.google.android.material.navigation.NavigationView
android:theme="#style/NavigationView"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
android:id="#+id/nav_view"
app:headerLayout="#layout/nav_header"
app:menu="#menu/drawer_menu"
android:background = "#color/purple_700"
app:itemTextColor="#color/white"
app:itemIconTint="#color/white"
/>
</androidx.drawerlayout.widget.DrawerLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
Main activity:
public class MainActivity extends AppCompatActivity {
ActivityMainBinding binding;
private DrawerLayout drawer;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
binding = ActivityMainBinding.inflate(getLayoutInflater());
setContentView(binding.getRoot());
replaceFragment(new HomeFragment());
Toolbar toolbar = findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
drawer = findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(this, drawer, toolbar,
R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.addDrawerListener(toggle);
toggle.syncState();
binding.bottomNavigationView.setOnItemSelectedListener(item -> {
switch (item.getItemId()){
case R.id.home:
replaceFragment(new HomeFragment());
break;
case R.id.dashboard:
replaceFragment(new DashboardFragment());
break;
case R.id.pregnant:
replaceFragment(new Pregnant());
break;
}
return true;
});
}
public void onBackPressed(){
if(drawer.isDrawerOpen(GravityCompat.START)){
drawer.closeDrawer(GravityCompat.START);
}else {
super.onBackPressed();
}
}
private void replaceFragment(Fragment fragment){
FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.replace(R.id.frameLayout, fragment);
fragmentTransaction.commit();
}
}
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fragments overlaid in bottom navigation and drawer layout using viewpager 2 in android app

I'm almost new to programming in Android and there are still things that I don't handle very well. Now I'm doing a project in Android using java that has me half frustrated since I've been trying to find and fix a problem for WEEKS but I still can't identify what it is. The app consists of a view that contains a drawer layout with a series of "options", it also contains a viewpager2 and a bottom navigation with 2 other "options." The error appears when I press the bottom navigation tabs since the two fragments they overlap each other, the same happens when I select an option from the navigation drawer, the fragments are superimposed, then I leave you part of my code so that I hope you can help me, thank you very much for taking the time to help me.
main:
public class MainActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener {
DrawerLayout drawerLayout;
ActionBarDrawerToggle actionBarDrawerToggle;
Toolbar toolbar;
NavigationView navigationView;
//variables para cargar el fragment
FragmentManager fragmentManager;
FragmentTransaction fragmentTransaction;
String personName;
ViewPager2 viewPager2;
BottomNavigationView bottomNavigationView;
ViewPagerAdapter adapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
toolbar=findViewById(R.id.toolbar);
setSupportActionBar(toolbar);//se pasa el toolbar
drawerLayout=findViewById(R.id.drawer);
navigationView=findViewById(R.id.navigationView);
navigationView.setNavigationItemSelectedListener(this);
actionBarDrawerToggle=new ActionBarDrawerToggle(this,drawerLayout,toolbar,R.string.open,R.string.close);
drawerLayout.addDrawerListener(actionBarDrawerToggle);
actionBarDrawerToggle.setDrawerIndicatorEnabled(true);
actionBarDrawerToggle.syncState();
initView();
}
#Override
public boolean onNavigationItemSelected(#NonNull MenuItem item) {
if (item.getItemId() == R.id.user){
FragmentManager fragmentManager;
FragmentTransaction fragmentTransaction;
fragmentManager=getSupportFragmentManager();
fragmentTransaction=fragmentManager.beginTransaction();
fragmentTransaction.replace(R.id.container, new perfil_user());
fragmentTransaction.commit();
}
else if (item.getItemId() == R.id.exit){
finish();
}
//aquí van las otros fragment
drawerLayout.closeDrawer(GravityCompat.START);
return false;
}
private void initView() {
viewPager2 = findViewById(R.id.vp_horizontal_ntb);
viewPager2.setOffscreenPageLimit(100);
bottomNavigationView = findViewById(R.id.navigation);
adapter = new ViewPagerAdapter(this);
viewPager2.setAdapter(adapter);
bottomNavigationView.setOnNavigationItemSelectedListener(new BottomNavigationView.OnNavigationItemSelectedListener() {
#Override
public boolean onNavigationItemSelected(#NonNull MenuItem item) {
Fragment fragment=null;
switch (item.getItemId()){
case R.id.perfil:
fragment=new perfil_user();
break;
case R.id.generar_debate:
fragment=new genera_debate();
break;
}
if (fragment != null) {
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
transaction.replace(R.id.container, fragment);
transaction.addToBackStack(null);
transaction.commit();
}
return true;
}
});
}
}
files xml:
content main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent"
>
<FrameLayout
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent">
</FrameLayout>
</LinearLayout>
drawer toolbar:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<androidx.appcompat.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="#067B30"
android:theme="#style/ThemeOverlay.AppCompat.Dark"
>
</androidx.appcompat.widget.Toolbar>
<com.google.android.material.appbar.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:elevation="0dp"/>
<com.google.android.material.bottomnavigation.BottomNavigationView
android:id="#+id/navigation"
app:menu="#menu/bottom_navigation"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:background="?android:attr/windowBackground"
android:foreground="?attr/selectableItemBackground" />
<androidx.viewpager2.widget.ViewPager2
android:id="#+id/vp_horizontal_ntb"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
activity main.xml
<?xml version="1.0" encoding="utf-8"?>
<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"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<include
android:layout_width="match_parent"
android:layout_height="wrap_content"
layout="#layout/drawer_toolbar"
>
</include>
<include
android:layout_width="match_parent"
android:layout_height="wrap_content"
layout="#layout/content_main"
>
</include>
<com.google.android.material.navigation.NavigationView
android:id="#+id/navigationView"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:menu="#menu/drawer_menu"
app:headerLayout="#layout/drawer_header"
android:layout_gravity="start"
android:fitsSystemWindows="true"
>
</com.google.android.material.navigation.NavigationView>
</androidx.drawerlayout.widget.DrawerLayout>

Navigation Drawer App does not change fragments when clicked

Good Morning, I am a newbie programmer, and I use Navigation Drawer Android Studio Activity to start. Everything is ok when I compile, but when I use the app and click on the different options, nothing happens (I mean that the layout doesn't change and remain on the activity_main.xml). I look for other questions but (I think) no one has had my problem.
MainActivity:
public class MainActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
private DrawerLayout drawer;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
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, "Ma giusto a provare", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
});
drawer = findViewById(R.id.drawer_layout);
NavigationView navigationView = findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.addDrawerListener(toggle);
toggle.syncState();
}
#Override
public void onBackPressed() {
DrawerLayout drawer = findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {
super.onBackPressed();
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
#SuppressWarnings("StatementWithEmptyBody")
#Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
switch(item.getItemId()) {
case R.id.nav_home:
ft.replace(R.id.fragment_container
, new CulturaClass()).commit();
break;
case R.id.nav_gallery:
ft.replace(R.id.fragment_container
, new CulturaClass()).commit();
break;
}
drawer.closeDrawer(GravityCompat.START);
return true;
}
}
main.xml
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<item
android:id="#+id/action_settings"
android:orderInCategory="100"
android:title="#string/action_settings"
app:showAsAction="never" />
</menu>
content_main.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:context=".MainActivity"
tools:showIn="#layout/app_bar_main">
<FrameLayout
android:id="#+id/fragment_container"
android:layout_width="match_parent"
android:layout_height="match_parent"></FrameLayout>
</android.support.constraint.ConstraintLayout>
activity_main_drawer.xml
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
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" />
<item
android:id="#+id/nav_gallery"
android:icon="#drawable/ic_menu_gallery"
android:title="#string/menu_Cultura" />
<item
android:id="#+id/nav_slideshow"
android:icon="#drawable/ic_menu_slideshow"
android:title="#string/menu_organizer" />
<item
android:id="#+id/nav_tools"
android:icon="#drawable/ic_menu_manage"
android:title="#string/menu_tools" />
</group>
<item android:title="Communicate">
<menu>
<item
android:id="#+id/nav_share"
android:icon="#drawable/ic_menu_share"
android:title="#string/menu_share" />
<item
android:id="#+id/nav_send"
android:icon="#drawable/ic_menu_send"
android:title="#string/menu_send" />
</menu>
</item>
</menu>
fragment_cultura.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Cultura generale!"
tools:layout_editor_absoluteX="171dp"
tools:layout_editor_absoluteY="320dp" />
<Button
android:id="#+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="VVVVai!"
tools:layout_editor_absoluteX="161dp"
tools:layout_editor_absoluteY="403dp" />
</android.support.constraint.ConstraintLayout>
CulturaClass.java
public class CulturaClass extends Fragment {
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_cultura,container,false);
}
activity_main.xml
<?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"
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">
<include
layout="#layout/app_bar_main"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<android.support.design.widget.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_main"
app:menu="#menu/activity_main_drawer" />
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="hello" />
</android.support.v4.widget.DrawerLayout>

Instead of R.id.fragment_container provide name for FrameLayout in activity_main.xml and pass that name while replacing fragment i.e.
case R.id.nav_home:
ft.replace(R.id.<name_of_framelayout>, new CulturaClass()).commit();
break;
case R.id.nav_gallery:
ft.replace(R.id.<name_of_framelayout>, new CulturaClass()).commit();
break;
This might work for you

Because you are replacing fragment with same class:
case R.id.nav_home:
ft.replace(R.id.fragment_container
, new CulturaClass()).commit(); //Same Class
break;
case R.id.nav_gallery:
ft.replace(R.id.fragment_container
, new CulturaClass()).commit(); //Same Class
break;

You can do this thing simple and easy way using common function or method and You never do mistake.
You have two option to use this One is using JAVA and second, is KOTLIN
The first Method I write below check this:
If you are using java, use like this method
First, create one function i.e name setFragment and pass the parameter Fragment class and second is a title (a Title is an optional if you use or not)
Declare the globally variable
private Fragment fragment = null;
//create function for replace fragment
private void setFragment(Fragment fragmentName, String title) {
fragment = fragmentName;
if (fragment != null) {
// Insert the fragment by replacing any existing fragment
FragmentManager fragmentManager = getSupportFragmentManager();
fragmentManager.beginTransaction().replace(R.id.framelayout, fragment, fragment.getTag()).commit();
}
setTitle("Dashboard");
// Close the navigation drawer
drawerLayout.closeDrawers();
}
If you are using KOTLIN:
First, create one function i.e name openFragment and pass the parameter Fragment class and second is a title (a Title is an optional if you use or not)
Declare the globally variable
private var fragment: Fragment? = null
//create function for replace fragment
fun openFragment(fragmentClass: Fragment, titleName: String) {
//pass the current fragment class name which you replace
fragment = fragmentClass
//check first fragment is null or not
if (fragment != null) {
val fragmentManager = supportFragmentManager
fragmentManager.beginTransaction()
.replace(R.id.framelayout, fragment!!, fragment!!.tag).commit()
}
title = titleName // replace the titlename
//check the drawerLayout close or not
if (drawerLayout.isDrawerOpen(GravityCompat.START)) {
drawerLayout.closeDrawer(GravityCompat.START)
}
}

Android Navigation Menu on item selected listener not firing

I have a navigation menu set up but whenever I select an item from it the onNavigationItemSelected does not get called.
MapsActivity.java
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maps);
initializeMap();
googleApiClient = new GoogleApiClient.Builder(this)
.enableAutoManage(this, this)
.addConnectionCallbacks(this)
.addApi(LocationServices.API)
.build();
navigationMenu = (NavigationView) findViewById(R.id.navigation_menu);
mDrawerLayout = (DrawerLayout)findViewById(R.id.drawer_layout);
mToggle = new ActionBarDrawerToggle(this, mDrawerLayout, R.string.open, R.string.close);
mDrawerLayout.addDrawerListener(mToggle);
mToggle.syncState();
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
toast = Toast.makeText(this, "test", Toast.LENGTH_LONG);
navigationMenu.setNavigationItemSelectedListener(this);
}
#Override
public boolean onNavigationItemSelected(#NonNull MenuItem item) {
toast.show();
Log.v("NAV", "Navigation item selected");
Log.v("ITEM", item.getItemId() + "");
switch (item.getItemId()){
case R.id.nav_restaurant: {
//do stuff
}
case R.id.nav_pharmacy: {
//do stuff
}
case R.id.nav_bank: {
//do stuff
}
}
return false;
}
activity_maps.xml
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_height="match_parent"
android:layout_width="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/drawer_layout">
<android.support.design.widget.NavigationView
android:layout_width="200dp"
android:layout_height="match_parent"
app:menu="#menu/navigation_menu"
android:id="#+id/navigation_menu"
android:layout_gravity="start"
app:headerLayout="#layout/navigation_header">
</android.support.design.widget.NavigationView>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Main Layout"
android:layout_gravity="center"
android:textAlignment="center"
android:textSize="30dp"/>
</LinearLayout>
<fragment
xmlns:map="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/map"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.damia.placefinder.activities.MapsActivity" />
The navigation menu opens and closes perfectly fine, and even closes once I select an item, but neither the two logs or the toast appears, showing that the onNavigationItemSelected was never called.
I suspect it has something to do with everything (the maps and nagivation drawer) being in the same activity but I'm not sure.

Because your NavigationView was covered by your LinearLayout and fragment. Please put the sequence of your views in activity_maps.xml in this way:
<DrawerLayout >
<LinearLayout />
<fragment />
<NavigationView /> <!-- on the top of views -->
</DrawerLayout>
And DO NOT FORGET return true; in your listener.

Replacing CardView with Fragment

Ok, so I have an activity and a fragment. In my activity there is a NavigationDrawer and and card view. I would like to click the menu item to go to Fragment. This works -partially. It loads the fragment - but instead of replacing the content inside activity it loads both cardview and fragment. How do I resolve this? Below is my code:
MainActivity.java
package com.sample.myapplication;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v4.app.FragmentManager;
import android.view.View;
import android.support.design.widget.NavigationView;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
public class MainActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
FloatingActionButton fab = (FloatingActionButton) 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 = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.setDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
}
#Override
public void onBackPressed() {
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {
super.onBackPressed();
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
#SuppressWarnings("StatementWithEmptyBody")
#Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
if (id == R.id.nav_camera) {
BlankFragment BlankFragment = new BlankFragment();
FragmentManager manager = getSupportFragmentManager();
manager.beginTransaction().replace(R.id.content_home, BlankFragment, BlankFragment.getTag()).commit();
} else if (id == R.id.nav_gallery) {
} else if (id == R.id.nav_slideshow) {
} else if (id == R.id.nav_manage) {
} else if (id == R.id.nav_share) {
} else if (id == R.id.nav_send) {
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
}
content_main.xml
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout 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/content_home"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:context="com.sample.myapplication.MainActivity"
tools:showIn="#layout/app_bar_home"
android:orientation="vertical"
android:padding="10dp"
android:layout_marginTop="60dp">
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="174dp"
android:id="#+id/on">
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="wrap_content">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="199dp"
android:padding="16dp">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/profile_image"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginRight="16dp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/profile_name"
android:layout_toRightOf="#+id/profile_image"
android:layout_alignParentTop="true"
android:textSize="30sp" />
</RelativeLayout>
</android.support.v7.widget.CardView>
</LinearLayout>
</LinearLayout>
</ScrollView>
fragment_blank.xml
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.sample.myapplication.BlankFragment">
<!-- TODO: Update blank fragment layout -->
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="#string/hello_blank_fragment" />
</FrameLayout>
and lastly my BlankFragment.java
package com.sample.myapplication;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
/**
* A simple {#link Fragment} subclass.
*/
public class BlankFragment extends Fragment {
public BlankFragment() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_blank, container, false);
}
}
activity_main.xml
<?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"
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">
<include
layout="#layout/app_bar_main"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<android.support.design.widget.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_main"
app:menu="#menu/activity_main_drawer" />
</android.support.v4.widget.DrawerLayout>

You can try setting the cardView visibility to View.GONE after you load the fragment.
EDIT
Try hiding the parent linear layout of the cardview instead of the cardview itself, the one that doesnt have an ID

Develop Reference

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Replacing CardView with Fragment

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