Develop Reference

Android Navigation View Item clicks only once

i am having a serious weird bug in android navigation view item click, the items are only clicking once when you open the app and stops clicking after, but the weirdest part is that the item is responding to click at the edge every time.
Below is my main xml code
<?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_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layoutDirection="ltr"
tools:openDrawer="start">
<include layout="#layout/layout_frame"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
<com.google.android.material.navigation.NavigationView
android:id="#+id/nav_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="start"
android:theme="#style/NavigationView"
app:itemTextColor="#color/black"
app:itemIconTint="#color/black"
android:background="#color/white"
app:headerLayout="#layout/nav_header_main"
android:elevation="5dp"
app:menu="#menu/activity_main_drawer" />
</androidx.drawerlayout.widget.DrawerLayout>
Navigation menu items
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<group android:checkableBehavior="single">
<item
android:checked="true"
android:id="#+id/home"
android:icon="#drawable/ic_home"
android:title="#string/home" />
<item
android:id="#+id/latest"
android:icon="#drawable/ic_latest"
android:title="#string/latest" />
<item
android:id="#+id/category"
android:icon="#drawable/ic_category"
android:title="#string/category" />
</group>
</menu>
The layout Frame
<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
>
<com.google.android.material.appbar.AppBarLayout
android:id="#+id/appBarLayout"
android:layout_height="wrap_content"
android:layout_width="match_parent"
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="#color/toolbar"
android:theme="#style/AppTheme.AppBarOverlay"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"/>
</com.google.android.material.appbar.AppBarLayout>
<FrameLayout
android:layout_marginTop="55dp"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/frame_one"/>
</androidx.coordinatorlayout.widget.CoordinatorLayout>
My Activity code
package com.education.books.MySchoolLibrary;
import androidx.annotation.NonNull;
import androidx.appcompat.app.ActionBarDrawerToggle;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.Toolbar;
import androidx.drawerlayout.widget.DrawerLayout;
import android.os.Bundle;
import android.view.MenuItem;
import android.view.View;
import android.widget.ProgressBar;
import android.widget.Toast;
import com.google.android.material.navigation.NavigationView;
public class NewAct extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener {
public Toolbar toolbar;
private ProgressBar progressBar;
private DrawerLayout drawer;
private NavigationView navigationView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_new);
toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setTitle("Tool");
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();
this.navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
View headerview = navigationView.getHeaderView(0);
findViewById(R.id.frame_one).setOnClickListener(v -> {
Toast.makeText(this, "frame ti ya werey!!!", Toast.LENGTH_SHORT).show();
});
}
#Override
public boolean onNavigationItemSelected(#NonNull MenuItem item) {
int id = item.getItemId();
drawer.closeDrawers();
if (id == R.id.home) {
Toast.makeText(this, "clicked", Toast.LENGTH_SHORT).show();
} else if (id == R.id.latest) {
Toast.makeText(this, "clicked", Toast.LENGTH_SHORT).show();
} else if (id == R.id.category) {
Toast.makeText(this, "clicked", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(this, "clicked", Toast.LENGTH_SHORT).show();
}
return true;
}
}
But if i copy this whole code into an entirely new application, it is working fine, pls i don't know what i am doing wrong. Thanks.

I am also facing same issue.found a work around solution like below
nav_view.menu.findItem(R.id.menu_share).setOnMenuItemClickListener {
shareApp()
drawer_layout.closeDrawer(GravityCompat.START)
true
}

How I can make a navbar and tabs with individual content for each tab depend of navbar item?

I want to make different content in the tabs for each navbar item. When I select Navbar1 and go to Tab one or Tab two or whatever, I want to show a text. When I switch to Navbar2 in navbar and select Tab one, Tab two etc.. I want to show a different content.
I'll show the code if necessary, but it's just android-studio default navbar drawer and I added tabs fragments.
Can you please give me any directions on how to proceed in regards to tabs fragments, mainactivity, navbar?
EDIT(Code and SS added):
Images: https://imgur.com/a/IVC5FrS
MainActivity.java
package cf.hazzu.bacalaureat;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.design.widget.TabLayout;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentTransaction;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
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;
import android.view.ViewGroup;
import android.widget.Toast;
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);
TabLayout tabLayout = (TabLayout)findViewById(R.id.tabs);
ViewPager Pager = (ViewPager)findViewById(R.id.viewpager);
tabpagerAdapter Tabpageradapter = new tabpagerAdapter(getSupportFragmentManager());
Pager.setAdapter(Tabpageradapter);
tabLayout.setupWithViewPager(Pager);
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);
}
#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_donate) {
Intent viewIntent =
new Intent("android.intent.action.VIEW",
Uri.parse("https://hazzu.cf/app/"));
startActivity(viewIntent);
return true;
}
if (id == R.id.action_info) {
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_one) {
setTitle("Navbar 1");
} else if (id == R.id.nav_two) {
setTitle("Navbar 2");
} else if (id == R.id.nav_three) {
setTitle("Navbar 3");
} else if (id == R.id.nav_smoke) {
Context context = getApplicationContext();
CharSequence text = "Some text, idk...";
int duration = Toast.LENGTH_SHORT;
Toast toast = Toast.makeText(context, text, duration);
toast.show();
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
}
tabpagerAdapter.java
package cf.hazzu.bacalaureat;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentStatePagerAdapter;
public class tabpagerAdapter extends FragmentStatePagerAdapter {
String[] tabarray = new String[]{"Tab1", "Tab2", "Tab3"};
Integer tabnumber = 3;
public tabpagerAdapter(FragmentManager fm) { super(fm); }
#Nullable
#Override
public CharSequence getPageTitle(int position) {
return tabarray[position];
}
#Override
public Fragment getItem(int position) {
switch (position) {
case 0:
tab_one tab1 = new tab_one();
return tab1;
case 1:
tab_two tab2 = new tab_two();
return tab2;
case 2:
tab_three tab3 = new tab_three();
return tab3;
}
return null;
}
#Override
public int getCount() {
return tabnumber;
}
}
tab_one.java
package cf.hazzu.bacalaureat;
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 tab_one extends Fragment {
public tab_one() {
// 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_tab_one, container, false);
}
}
tab_two.java
package cf.hazzu.bacalaureat;
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 tab_two extends Fragment {
public tab_two() {
// 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_tab_two, container, false);
}
}
tab_three.java
package cf.hazzu.bacalaureat;
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 tab_three extends Fragment {
public tab_three() {
// 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_tab_three, 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>
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"
tools:context=".MainActivity">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:popupTheme="#style/AppTheme.PopupOverlay" />
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:tabIndicatorColor="#color/white">
<android.support.design.widget.TabItem
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Tab One" />
<android.support.design.widget.TabItem
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Tab Two" />
<android.support.design.widget.TabItem
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Tab Three" />
</android.support.design.widget.TabLayout>
</android.support.design.widget.AppBarLayout>
<include layout="#layout/content_main" />
</android.support.design.widget.CoordinatorLayout>
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">
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent">
</android.support.v4.view.ViewPager>
</android.support.constraint.ConstraintLayout>
fragment_tab_one.xml
<?xml version="1.0" encoding="utf-8"?>
<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=".tab_one">
<!-- TODO: Update blank fragment layout -->
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="#string/screen_tab1"
android:gravity="center"
android:textSize="24sp"/>
</FrameLayout>
fragment_tab_two.xml
<?xml version="1.0" encoding="utf-8"?>
<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=".tab_two">
<!-- TODO: Update blank fragment layout -->
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="#string/screen_tab2"
android:gravity="center"
android:textSize="24sp"/>
</FrameLayout>
menu/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_one"
android:icon="#drawable/ic_font_download_black_24dp"
android:title="Navbar 1" />
<item
android:id="#+id/nav_two"
android:icon="#drawable/ic_face_black_24dp"
android:title="Navbar 2" />
<item
android:id="#+id/nav_three"
android:icon="#drawable/ic_insert_drive_file_black_24dp"
android:title="Navbar 3" />
</group>
<item android:title="Chestii">
<menu>
<item
android:id="#+id/nav_smoke"
android:icon="#drawable/ic_smoking_rooms_black_24dp"
android:title="Smth" />
</menu>
</item>
</menu>

Navigation Drawer Listener Not Working in Fragment

I am trying to implement navigation drawer inside the fragment, but I am facing problem when I am implementing the NavigationListener in FeedFragment.java, can you please help me to solve the problem and help me knowing the procedure implementing listener and toolbar inside the fragment activity. I have added all the code structure below which I have used to implement it.and even attached screenshot. Many a thanks in advance.
here is the screenshot which I am implementing
activity_main.xml
<?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"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="com.example.sirajm.boom.MainActivity">
<include layout="#layout/content_main" />
<android.support.design.widget.BottomNavigationView
android:id="#+id/navigation"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:background="?android:attr/windowBackground"
app:menu="#menu/navigation" />
</LinearLayout>
content_main.xml
<FrameLayout android:id="#+id/content_panel"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
xmlns:android="http://schemas.android.com/apk/res/android">
</FrameLayout>
fragment_feed.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.design.widget.NavigationView>
</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"
tools:context=".MainActivity">
<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_fragment" />
</android.support.design.widget.CoordinatorLayout>
content_fragment.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">
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="Hello Blank Fragment" />
</LinearLayout>
MainActivity.java
package com.example.sirajm.boom;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.design.widget.BottomNavigationView;
import android.support.v7.app.AppCompatActivity;
import android.view.MenuItem;
import android.widget.TextView;
import com.example.sirajm.boom.Fragments.FeedFragment;
import com.example.sirajm.boom.Fragments.twoFragment;
import com.example.sirajm.boom.Fragments.threeFragment;
import com.example.sirajm.boom.Fragments.fourFragment;
import com.example.sirajm.boom.Fragments.fiveFragment;
public class MainActivity extends AppCompatActivity {
private TextView mTextMessage;
private BottomNavigationView.OnNavigationItemSelectedListener mOnNavigationItemSelectedListener
= new BottomNavigationView.OnNavigationItemSelectedListener() {
#Override
public boolean onNavigationItemSelected(#NonNull MenuItem item) {
switch (item.getItemId()) {
case R.id.navigation_home:
getSupportFragmentManager().beginTransaction().replace(R.id.content_panel,new FeedFragment()).commit();
return true;
case R.id.navigation_store:
getSupportFragmentManager().beginTransaction().replace(R.id.content_panel,new twoFragment()).commit();
return true;
case R.id.navigation_orders:
getSupportFragmentManager().beginTransaction().replace(R.id.content_panel,new threeFragment()).commit();
return true;
case R.id.navigation_service:
getSupportFragmentManager().beginTransaction().replace(R.id.content_panel,new fourFragment()).commit();
return true;
case R.id.navigation_profile:
getSupportFragmentManager().beginTransaction().replace(R.id.content_panel,new fiveFragment()).commit();
return true;
}
return false;
}
};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// mTextMessage = (TextView) findViewById(R.id.message);
BottomNavigationView navigation = (BottomNavigationView) findViewById(R.id.navigation);
BottomNavigationHelper.disableShiftMode(navigation);
navigation.setOnNavigationItemSelectedListener(mOnNavigationItemSelectedListener);
getSupportFragmentManager().beginTransaction().add(R.id.content_panel,new FeedFragment()).commit();
}
}
FeedFragment.java
package com.example.sirajm.boom.Fragments;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.view.LayoutInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Toast;
import com.example.sirajm.boom.R;
public class FeedFragment extends Fragment implements NavigationView.OnNavigationItemSelectedListener {
View rootView;
public FeedFragment() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
rootView =inflater.inflate(R.layout.fragment_feed, container, false);
Toolbar toolbar = (Toolbar) rootView.findViewById(R.id.toolbar);
DrawerLayout drawer = (DrawerLayout) rootView.findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
getActivity(), drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.setDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) rootView.findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener((NavigationView.OnNavigationItemSelectedListener) getActivity());
return rootView;
}
#SuppressWarnings("StatementWithEmptyBody")
#Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
switch (id) {
case R.id.nav_event:
Toast.makeText(getContext(), "ev1", Toast.LENGTH_SHORT).show();
break;
case R.id.nav_news:
Toast.makeText(getContext(), "ev2", Toast.LENGTH_SHORT).show();
break;
case R.id.nav_offers:
Toast.makeText(getContext(), "ev3", Toast.LENGTH_SHORT).show();
break;
case R.id.nav_problems:
Toast.makeText(getContext(), "ev4", Toast.LENGTH_SHORT).show();
break;
case R.id.nav_talents:
Toast.makeText(getContext(), "ev5", Toast.LENGTH_SHORT).show();
break;
case R.id.nav_shortmov:
Toast.makeText(getContext(), "ev6", Toast.LENGTH_SHORT).show();
break;
case R.id.nav_share:
Toast.makeText(getContext(), "ev7", Toast.LENGTH_SHORT).show();
break;
case R.id.nav_send:
Toast.makeText(getContext(), "Send", Toast.LENGTH_SHORT).show();
break;
case R.id.nav_logout:
Toast.makeText(getContext(), "logout", Toast.LENGTH_SHORT).show();
break;
}
DrawerLayout drawer = (DrawerLayout) rootView.findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
}

Why don't you make your base activity implements NavigationView.OnNavigationItemSelectedListener
Then add these those calls
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.setItemIconTintList(null);
navigationView.setNavigationItemSelectedListener(this);
So you don't need to implement it from fragment.
You just replace or add the fragments.

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

Android error on Attempt to invoke virtual method; I don't understand it

I am trying to build a simple navigation drawer, but I keep getting this annoying error. I am fairly new to Android so I really don't know how to fix/what it means. Any help is appreciated.
Java:
package com.google.helpstl2;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.Toast;
import java.util.List;
public class Home extends ActionBarActivity implements OnItemClickListener {
private DrawerLayout drawerLayout;
private ListView listView;
private String[] planets;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
drawerLayout = (DrawerLayout) findViewById(R.id.drawerLayout);
planets = getResources().getStringArray(R.array.planets);
listView = (ListView) findViewById(R.id.drawerList);
listView.setAdapter(new ArrayAdapter<>(this, android.R.layout.simple_expandable_list_item_1, planets));
listView.setOnItemClickListener(this);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_home, 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);
}
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Toast.makeText(this,planets[position],Toast.LENGTH_LONG).show();
}
}
Relevant XML?
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/drawerLayout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<!-- The main content view -->
<FrameLayout
android:id="#+id/mainContent"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<ListView android:id="#+id/drawerList"
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="left"
/>
</android.support.v4.widget.DrawerLayout>
Logcat error output is :
Process: com.google.helpstl2, PID: 2205 java.lang.RuntimeException: Unable to start activity ComponentInfo{com.google.helpstl2/com.google.helpstl2.Home}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.ListView.setAdapter(android.widget.ListAdapter)' on a null object reference

May be your xml layout file with content :
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/drawerLayout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<!-- The main content view -->
<FrameLayout
android:id="#+id/mainContent"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<ListView android:id="#+id/drawerList"
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="left"
/>
</android.support.v4.widget.DrawerLayout>
is not activity_main.xml so you are getting NPE when finding id : drawerList
Check this thing one time.
You can add null check at the error line :
if(listView != null ) {
listView.setAdapter(new ArrayAdapter<>(this, android.R.layout.simple_expandable_list_item_1, planets));
listView.setOnItemClickListener(this);
}