Develop Reference

fragment is not redirecting in android

import android.content.Intent;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentTransaction;
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.widget.TextView;
public class MainActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
TextView textViewId, textViewUsername, textViewEmail, textViewGender;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
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.setDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
//add this line to display menu1 when the activity is loaded
//displaySelectedScreen(R.id.nav_menu1);
if (!SharedPrefManager.getInstance(this).isLoggedIn()) {
finish();
startActivity(new Intent(this, Login.class));
}
textViewId = (TextView) findViewById(R.id.textViewId);
textViewUsername = (TextView) findViewById(R.id.textViewUsername);
textViewEmail = (TextView) findViewById(R.id.textViewEmail);
textViewGender = (TextView) findViewById(R.id.textViewGender);
//getting the current user
User user = SharedPrefManager.getInstance(this).getUser();
//setting the values to the textviews
textViewId.setText(String.valueOf(user.getId()));
textViewUsername.setText(user.getUsername());
textViewEmail.setText(user.getEmail());
textViewGender.setText(user.getGender());
//when the user presses logout button
//calling the logout method
findViewById(R.id.buttonLogout).setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
finish();
SharedPrefManager.getInstance(getApplicationContext()).logout();
}
});
}
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);
}
private void displaySelectedScreen(int itemId) {
//creating fragment object
Fragment fragment = null;
//initializing the fragment object which is selected
switch (itemId) {
case R.id.staff_link:
fragment = new Staff_layout();
break;
case R.id.student_link:
fragment = new Student_layout();
break;
case R.id.vehicle_link:
fragment = new Vehicle_layout();
break;
}
//replacing the fragment
if (fragment != null) {
FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
ft.replace(R.id.content_frame, fragment);
ft.commit();
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
}
#SuppressWarnings("StatementWithEmptyBody")
#Override
public boolean onNavigationItemSelected(MenuItem item) {
//calling the method displayselectedscreen and passing the id of selected menu
displaySelectedScreen(item.getItemId());
//make this method blank
return true;
}
}
this is my MainActivity and when the item is clicked it is not redirecting and not showing any logcat errors this is my XML file
<?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"
xmlns:tools="http://schemas.android.com/tools"
tools:showIn="navigation_view">
<group android:checkableBehavior="single">
<item
android:id="#+id/student_link"
android:title="Student Register" />
<item
android:id="#+id/staff_link"
android:title="Staff Register" />
<item
android:id="#+id/vehicle_link"
android:title="Vehicle Register" />
</group>
</menu>
it doesn't show any response even the item is clicked
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
public class Student_layout extends Fragment {
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
//returning our layout file
//change R.layout.yourlayoutfilename for each of your fragments
return inflater.inflate(R.layout.student_layout, container, false);
}
#Override
public void onViewCreated(View view, #Nullable Bundle
savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
//you can set the title for your toolbar here for different
fragments different titles
getActivity().setTitle("Menu 1");
}
}
when the student item is clicked is not redirecting to student fragment layout
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="student"
android:id="#+id/textView"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true" />
</RelativeLayout>
is there anything i should rectify or this doesnt work?

Switch fragment correctly, Your are declaring fragment in switch case but you are switching fragment outside the case:
You can use this code
Fragment mCurrentLoadedFragment;
android.support.v4.app.FragmentManager mFragmentManager, fm;
FragmentTransaction mFragmentTransaction;
and the method is
public void switchContent(Fragment fragment) {
mCurrentLoadedFragment = fragment;
mFragmentManager = getSupportFragmentManager();
mFragmentTransaction = mFragmentManager.beginTransaction();
mFragmentTransaction.replace(R.id.container, mCurrentLoadedFragment);
mFragmentTransaction.commit();
}
and call like this,
if (id == R.id.nav_home) {
switchContent(new HomeFragment());
}

Android Navigation Drawer with sliding TabView

I stumbled into a crazy little 'bug', or i'm just doing something wrong. I am trying to get the swipe tab view in main activity, swipe tabView perfectly working but the main problem is when click on Navigation Drawer Menu then the fragment are overlaying each other. please Help..
here is my two tabView Fragment
1.NewsFragment
public class NewsFragment extends Fragment {
public static NewsFragment newInstance(){
NewsFragment newsFragment=new NewsFragment();
return newsFragment;
}
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(R.layout.news_fragment,null);
}}
2.NoticeFragment
public class NoticeFragment extends Fragment {
public static NoticeFragment newInstance(){
NoticeFragment noticeFragment=new NoticeFragment();
return noticeFragment;
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(R.layout.notice_fragment, container, false);
}}
Here is my two xml for two fragment
1.News_fragment.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="120dp"
android:textSize="30sp"
android:gravity="center"
android:id="#+id/textView"
android:layout_centerHorizontal="true"
android:textColor="#android:color/holo_blue_dark"
android:text="News\nFragment"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:autoLink="web"
android:textSize="15sp"
android:layout_marginTop="10dp"
android:layout_centerHorizontal="true"
android:text="Android Sikkha"
android:textColor="#000"
android:layout_below="#+id/textView"
android:textStyle="italic"/>
</RelativeLayout>
2.notice_fragment.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="120dp"
android:textSize="30sp"
android:gravity="center"
android:id="#+id/textView"
android:layout_centerHorizontal="true"
android:textColor="#android:color/holo_blue_dark"
android:text="Notice\nFragment"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:autoLink="web"
android:textSize="15sp"
android:layout_marginTop="10dp"
android:layout_centerHorizontal="true"
android:text="Android Sikkha"
android:textColor="#000"
android:layout_below="#+id/textView"
android:textStyle="italic"/>
</RelativeLayout>
i have another java file called Home which is same as previous one java file and also xml is same.
Here is the MainActivity
package com.example.user.navwithtab;
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.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
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 java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
DrawerLayout drawer;
ViewPager mViewPager;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
// Setear adaptador al viewpager.
mViewPager = (ViewPager) findViewById(R.id.pager);
setupViewPager(mViewPager);
// Preparar las pestañas
TabLayout tabs = (TabLayout) findViewById(R.id.tabs);
tabs.setupWithViewPager(mViewPager);
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);
}
private void setupViewPager(ViewPager viewPager) {
SectionsPagerAdapter adapter = new SectionsPagerAdapter(getSupportFragmentManager());
adapter.addFragment(NewsFragment.newInstance(), "News");
adapter.addFragment(NoticeFragment.newInstance(), "Notice");
viewPager.setAdapter(adapter);
}
public class SectionsPagerAdapter extends FragmentPagerAdapter {
private final List<Fragment> mFragments = new ArrayList<>();
private final List<String> mFragmentTitles = new ArrayList<>();
public SectionsPagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int position) {
return mFragments.get(position);
}
#Override
public int getCount() {
return mFragments.size();
}
public void addFragment(Fragment fragment, String title) {
mFragments.add(fragment);
mFragmentTitles.add(title);
}
#Override
public CharSequence getPageTitle(int position) {
return mFragmentTitles.get(position);
}
}
#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();
android.app.FragmentManager fragmentManager=getFragmentManager();
if (id == R.id.home) {
fragmentManager.beginTransaction().replace(R.id.content_frame,new HomeFragment()).commit();
} else if (id == R.id.announcement) {
fragmentManager.beginTransaction().replace(R.id.content_frame,new AnnouncementFragment()).commit();
} 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;
}}
here is 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>
Sorry for long post.
Note: Navigation Drawer and swipe View working perfectly but the problem is on fragment overlay.after clicking navigationbarmenu
Here is my logcat
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.user.navwithtab, PID: 3400
java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.v4.widget.DrawerLayout.closeDrawer(int)' on a null object reference
at com.example.user.navwithtab.MainActivity.onNavigationItemSelected(MainActivity.java:157)
at android.support.design.widget.NavigationView$1.onMenuItemSelected(NavigationView.java:153)
at android.support.v7.view.menu.MenuBuilder.dispatchMenuItemSelected(MenuBuilder.java:810)
at android.support.v7.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:152)
at android.support.v7.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:957)
at android.support.design.internal.NavigationMenuPresenter$1.onClick(NavigationMenuPresenter.java:328)
at android.view.View.performClick(View.java:5198)
at android.view.View$PerformClick.run(View.java:21147)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

In onNavigationItemSelected method do not create the DrawerLayout again. Simply call the closeDrawer.
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout); --> remove this line of code
drawer.closeDrawer(GravityCompat.START);
UPDATE
In your onCreate method change this line of code
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
to
drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
and add this line of code
DrawerLayout drawer
below this line of code
ViewPager mViewPager;
and remove the indicated line of code in onNavigationItemSelected method

if (id == R.id.home) {
fragmentManager.beginTransaction().replace(R.id.content_frame,new HomeFragment()).commit();
} else if (id == R.id.announcement) {
fragmentManager.beginTransaction().replace(R.id.content_frame,new AnnouncementFragment()).commit();
update above code as below :
if (id == R.id.home) {
fragmentManager.beginTransaction().replace(R.id.content_frame,new HomeFragment()).addToBackStack(null).commit();
} else if (id == R.id.announcement) {
fragmentManager.beginTransaction().replace(R.id.content_frame,new AnnouncementFragment()).addToBackStack(null).commit();

how to put tab fragment inside navigation drawer fragment

This is my MainActivity.java. I have an error when I called a tabbed fragment inside it. the error is in the line
fragment = new FriendsFragment();
MainActivity.java
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.View;
import android.widget.Toast; import info.androidhive.materialdesign.R;
public class MainActivity extends AppCompatActivity implements FragmentDrawer.FragmentDrawerListener {
private static String TAG = MainActivity.class.getSimpleName();
private Toolbar mToolbar;
private FragmentDrawer drawerFragment;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mToolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(mToolbar);
getSupportActionBar().setDisplayShowHomeEnabled(true);
drawerFragment = (FragmentDrawer)
getSupportFragmentManager().findFragmentById(R.id.fragment_navigation_drawer);
drawerFragment.setUp(R.id.fragment_navigation_drawer, (DrawerLayout) findViewById(R.id.drawer_layout), mToolbar);
drawerFragment.setDrawerListener(this);
// display the first navigation drawer view on app launch
displayView(0);
}
#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_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;
}
if(id == R.id.action_search){
Toast.makeText(getApplicationContext(), "Search action is selected!", Toast.LENGTH_SHORT).show();
return true;
}
return super.onOptionsItemSelected(item);
}
#Override
public void onDrawerItemSelected(View view, int position) {
displayView(position);
}
private void displayView(int position) {
Fragment fragment = null;
String title = getString(R.string.app_name);
switch (position) {
case 0:
fragment = new HomeFragment();
title = getString(R.string.title_home);
break;
case 1:
fragment = new FriendsFragment();
title = getString(R.string.title_friends);
break;
case 2:
fragment = new MessagesFragment();
title = getString(R.string.title_messages);
break;
default:
break;
}
if (fragment != null) {
FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.replace(R.id.container_body, fragment);
fragmentTransaction.commit();
// set the toolbar title
getSupportActionBar().setTitle(title);
}
}
}
my friendsfragment is extended with appcompatactivity. could you help me how to clear the error. the friendsfragment.java is also attached here
FriendsFragment.java
import android.os.Bundle;
import android.support.design.widget.TabLayout;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import info.androidhive.materialdesign.R;
import info.androidhive.materialdesign.adapter.PagerAdapter;
public class FriendsFragment extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.fragment_friends);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
TabLayout tabLayout = (TabLayout) findViewById(R.id.tab_layout);
tabLayout.addTab(tabLayout.newTab().setText("Tab 1"));
tabLayout.addTab(tabLayout.newTab().setText("Tab 2"));
tabLayout.addTab(tabLayout.newTab().setText("Tab 3"));
tabLayout.setTabGravity(TabLayout.GRAVITY_FILL);
final ViewPager viewPager = (ViewPager) findViewById(R.id.pager);
final PagerAdapter adapter = new PagerAdapter
(getSupportFragmentManager(), tabLayout.getTabCount());
viewPager.setAdapter(adapter);
viewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(tabLayout));
tabLayout.setOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
#Override
public void onTabSelected(TabLayout.Tab tab) {
viewPager.setCurrentItem(tab.getPosition());
}
#Override
public void onTabUnselected(TabLayout.Tab tab) {
}
#Override
public void onTabReselected(TabLayout.Tab tab) {
}
});
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
The error is
Error:(85, 28) error: incompatible types: FriendsFragment cannot be converted to Fragment

Your FriendsFragment cannot be converted to fragment and that is correct because it is not a fragment, it is an activity, instead of extending from AppCompatActivity it should extend from Fragment or FragmentActivity.
This should make it work, happy coding.

Your FriendsFragement is extending AppCompatActivity...
You have to change
public class FriendsFragment extends AppCompatActivity {
to
public class FriendsFragment extends Fragment {
and make other changes is your FriendsFragment accordingly...
**You cant cast Activity to Fragment....

How to merge two Activity in Android

I am having an two Activity in my project. In my DrawerActivity, I have added Navigation Drawer and in other activity i.e TabActivity I have list of fragments. I am trying to show content of TabActivity in DrawerActivity.
Is it possible to do so or I have follow another approach. I am newbie developer please help me out.
DrawerActivity.java
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
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 Drawer extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_drawer);
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.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.drawer, 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) {
// Handle the camera action
} 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;
}
}
// And my second activity is TabActivity, here i want to show content of this activity in DrawerActivity.
package com.umenit.naviagtiondrawer;
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.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import com.umenit.naviagtiondrawer.fragment.EightFragment;
import com.umenit.naviagtiondrawer.fragment.FiveFragment;
import com.umenit.naviagtiondrawer.fragment.FourFragment;
import com.umenit.naviagtiondrawer.fragment.OneFragment;
import com.umenit.naviagtiondrawer.fragment.SevenFragment;
import com.umenit.naviagtiondrawer.fragment.SixFragment;
import com.umenit.naviagtiondrawer.fragment.ThreeFragment;
import com.umenit.naviagtiondrawer.fragment.TwoFragment;
import java.util.ArrayList;
import java.util.List;
public class TabActivity extends AppCompatActivity {
private Toolbar toolbar;
private TabLayout tabLayout;
private ViewPager viewPager;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_tab);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
viewPager = (ViewPager) findViewById(R.id.viewpager);
setupViewPager(viewPager);
tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(viewPager);
}
private void setupViewPager(ViewPager viewPager) {
ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
adapter.addFragment(new OneFragment(), "ONE");
adapter.addFragment(new TwoFragment(), "TWO");
adapter.addFragment(new ThreeFragment(), "THREE");
adapter.addFragment(new FourFragment(), "FOUR");
adapter.addFragment(new FiveFragment(), "FIVE");
adapter.addFragment(new SixFragment(), "six");
adapter.addFragment(new SevenFragment(), "SEVEN");
adapter.addFragment(new EightFragment(), "EIGHT");
viewPager.setAdapter(adapter);
}
class ViewPagerAdapter extends FragmentPagerAdapter {
private final List<Fragment> mFragmentList = new ArrayList<>();
private final List<String> mFragmentTitleList = new ArrayList<>();
public ViewPagerAdapter(FragmentManager manager) {
super(manager);
}
#Override
public Fragment getItem(int position) {
return mFragmentList.get(position);
}
#Override
public int getCount() {
return mFragmentList.size();
}
public void addFragment(Fragment fragment, String title) {
mFragmentList.add(fragment);
mFragmentTitleList.add(title);
}
#Override
public CharSequence getPageTitle(int position) {
return mFragmentTitleList.get(position);
}
}
}

If you want to add navigation drawer to your other activities you can do that by extending DrawerActivity in your TabActivity.
For further reference check this link.
https://stackoverflow.com/a/21406760/4646227

in your drower layout you should add tab layout like this :
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout 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"
android:id="#+id/drawer"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
android:layout_gravity="end"
tools:context=".MainActivity">
<android.support.design.widget.CoordinatorLayout
android:id="#+id/root_view"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v4.view.ViewPager
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/ColorPrimary"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<include
android:id="#+id/toolbar"
layout="#layout/tool_bar"
/>
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fitsSystemWindows="true"
app:tabGravity="fill"
android:background="#color/ColorPrimary"
app:tabIndicatorColor="#android:color/background_light"
app:tabMode="fixed"
/>
</android.support.design.widget.AppBarLayout>
</android.support.design.widget.CoordinatorLayout>
<android.support.design.widget.NavigationView
android:id="#+id/navigation_view"
android:layout_height="match_parent"
android:layout_width="wrap_content"
android:layout_gravity="end"
app:headerLayout="#layout/drawer_header"
app:menu="#menu/drawer_menu"
android:layoutDirection="rtl"
android:textDirection="rtl"
/>
</android.support.v4.widget.DrawerLayout>
and in your code you should do this :
public void setupToolbar(){
// Initializing Toolbar and setting it as the actionbar
toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
ImageView drawer_icon= (ImageView) findViewById(R.id.drawer_icon);
drawer_icon.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if (!drawerLayout.isDrawerOpen(GravityCompat.END)) {
drawerLayout.openDrawer(GravityCompat.END);
}
}
});
}
public void setupTabs(){
tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(mViewPager);
}
public void setupDrawer(){
//Initializing NavigationView
navigationView = (NavigationView) findViewById(R.id.navigation_view);
// Initializing Drawer Layout and ActionBarToggle
drawerLayout = (DrawerLayout) findViewById(R.id.drawer);
ActionBarDrawerToggle actionBarDrawerToggle = new ActionBarDrawerToggle(this,drawerLayout,toolbar
,R.string.drawer_opened, R.string.drawer_closed){
#Override
public void onDrawerClosed(View drawerView) {
// Code here will be triggered once the drawer closes as we dont want anything to happen so we leave this blank
super.onDrawerClosed(drawerView);
}
#Override
public void onDrawerOpened(View drawerView) {
// Code here will be triggered once the drawer open as we dont want anything to happen so we leave this blank
super.onDrawerOpened(drawerView);
}
};
//Setting the actionbarToggle to drawer layout
drawerLayout.setDrawerListener(actionBarDrawerToggle);
//calling sync state is necessay or else your hamburger icon wont show up
// actionBarDrawerToggle.syncState();
}
public void tabListener(){
tabLayout.setOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
#Override
public void onTabSelected(TabLayout.Tab tab) {
mViewPager.setCurrentItem(tab.getPosition());
if(tab.getPosition()==0){
NewsPage.newInstance(tab.getPosition());
}
else if(tab.getPosition()==1){
MainPage.newInstance(tab.getPosition());
}
else{
AnnouncementsPage.newInstance(tab.getPosition());
}
}
#Override
public void onTabUnselected(TabLayout.Tab tab) {
}
#Override
public void onTabReselected(TabLayout.Tab tab) {
}
});
}
public void drawerListener(){
//Setting Navigation View Item Selected Listener to handle the item click of the navigation menu
navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
// This method will trigger on item Click of navigation menu
#Override
public boolean onNavigationItemSelected(MenuItem menuItem) {
Intent intent;
//Checking if the item is in checked state or not, if not make it in checked state
// if (menuItem.isChecked()) menuItem.setChecked(false);
// else menuItem.setChecked(true);
//Closing drawer on item click
drawerLayout.closeDrawers();
//Check to see which item was being clicked and perform appropriate action
switch (menuItem.getItemId()) {
//Replacing the main content with ContentFragment Which is our Inbox View;
case R.id.innovation_center:
MainActivity.position.setValue(MainActivity.CATEGORY,INNOVATION_CENTER_CATEGORY_NUMBER);
intent=new Intent(MainActivity.this,MainActionList.class);
startActivity(intent);
return true;
// For rest of the options we just show a toast on click
case R.id.about_university:
MainActivity.position.setValue(MainActivity.CATEGORY,ABOUT_UNIVERSITY_CATEGORY_NUMBER);
intent=new Intent(MainActivity.this,MainActionList.class);
startActivity(intent);
return true;
case R.id.contact_us:
intent=new Intent(MainActivity.this,ContactUs.class);
startActivity(intent);
return true;
default:
Toast.makeText(getApplicationContext(), "Somethings Wrong", Toast.LENGTH_SHORT).show();
return true;
}
}
});
}
public void setupPager(){
// Create the adapter that will return a fragment for each of the three
// primary sections of the activity.
mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());
// Set up the ViewPager with the sections adapter.
mViewPager = (ViewPager) findViewById(R.id.pager);
mViewPager.setAdapter(mSectionsPagerAdapter);
mViewPager.setCurrentItem(1);
}

Changing navigation drawer items at runtime

The case is the following: I have two types of users, type1 and type2. Both have to login in order to go to the main activity which has a Navigation Drawer. The items in the navigation drawer depends on the type of the user. How can I change the items of the navigation drawer at runtime after I know the user type.
MainActivity.java
package com.example.motassem.navdrawer;
import android.content.SharedPreferences;
import android.content.res.Configuration;
import android.preference.PreferenceManager;
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.os.Bundle;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
public class MainActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener {
private static final String SELECTED_ITEM_ID = "selected_item_id";
private static final String FIRST_TIME = "first_time";
private Toolbar mToolbar;
private NavigationView mDrawer;
private DrawerLayout mDrawerLayout;
private ActionBarDrawerToggle mDrawerToggle;
private int mSelectedID;
private boolean mUserSawDrawer = false;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//mMainLayout = (LinearLayout) findViewById(R.id.main_content);
mToolbar = (Toolbar) findViewById(R.id.app_bar);
setSupportActionBar(mToolbar);
mDrawer = (NavigationView) findViewById(R.id.main_drawer);
mDrawer.setNavigationItemSelectedListener(this);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
mDrawerToggle = new ActionBarDrawerToggle(this,
mDrawerLayout, mToolbar,
R.string.drawer_open,
R.string.drawer_close);
mDrawerLayout.setDrawerListener(mDrawerToggle);
mDrawerToggle.syncState();
if (!didUserSeeDrawer()) {
showDrawer();
markDrawerSeen();
} else {
hideDrawer();
}
mSelectedID = savedInstanceState == null ? R.id.navigation_item_1 : savedInstanceState.getInt(SELECTED_ITEM_ID);
if (mSelectedID == R.id.navigation_item_1) {
// This is the first time i.e. NO FRAGMENTS WERE ADDED BEFORE..?
}
navigate(mSelectedID);
}
private boolean didUserSeeDrawer() {
SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
return sharedPreferences.getBoolean(FIRST_TIME, false);
}
private void markDrawerSeen() {
SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
mUserSawDrawer = true;
sharedPreferences.edit().putBoolean(FIRST_TIME, mUserSawDrawer).apply();
}
private void hideDrawer() {
mDrawerLayout.closeDrawer(GravityCompat.START);
}
private void showDrawer() {
mDrawerLayout.openDrawer(GravityCompat.START);
}
private void navigate(int mSelectedID) {
switch (mSelectedID) {
// Edit here to navigate..
case R.id.navigation_item_1: // History was pressed.
mDrawerLayout.closeDrawer(GravityCompat.START);
getSupportFragmentManager().beginTransaction().replace(R.id.main_content, new FragmentTotal()).commit();
break;
case R.id.navigation_item_2: // Stores was pressed.
mDrawerLayout.closeDrawer(GravityCompat.START);
getSupportFragmentManager().beginTransaction().replace(R.id.main_content, new FragmentTransactionComplete()).commit();
break;
case R.id.navigation_item_3: // Settings was pressed.
mDrawerLayout.closeDrawer(GravityCompat.START);
getSupportFragmentManager().beginTransaction().replace(R.id.main_content, new FragmentUpdateCard()).commit();
break;
}
}
#Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
mDrawerToggle.onConfigurationChanged(newConfig);
}
#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_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);
}
#Override
public boolean onNavigationItemSelected(MenuItem menuItem) {
menuItem.setChecked(true);
mSelectedID = menuItem.getItemId();
navigate(mSelectedID);
return true;
}
#Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putInt(SELECTED_ITEM_ID, mSelectedID);
}
#Override
public void onBackPressed() {
if (mDrawerLayout.isDrawerOpen(GravityCompat.START)) {
mDrawerLayout.closeDrawer(GravityCompat.START);
} else {
super.onBackPressed();
}
}
}
activity_main.xml
<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"
tools:context="com.example.motassem.navdrawer.MainActivity">
<LinearLayout
android:id="#+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<android.support.v7.widget.Toolbar
android:id="#+id/app_bar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/colorPrimary"
android:minHeight="?attr/actionBarSize"
app:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
</android.support.v7.widget.Toolbar>
</LinearLayout>
<android.support.design.widget.NavigationView
android:id="#+id/main_drawer"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
app:headerLayout="#layout/drawer_header"
app:itemIconTint="#color/colorAccent"
app:itemTextColor="#color/colorTextSecondary"
app:menu="#menu/menu_drawer">
</android.support.design.widget.NavigationView>
</android.support.v4.widget.DrawerLayout>
menu_item.xml
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:id="#+id/navigation_item_1"
android:icon="#drawable/ic_history"
android:title="#string/navigation_item_1" />
<item
android:id="#+id/navigation_item_2"
android:icon="#drawable/ic_cart"
android:title="#string/navigation_item_2" />
<item
android:id="#+id/navigation_item_3"
android:icon="#drawable/ic_card"
android:title="#string/navigation_item_3" />
</menu>

I found easier way to change navigation view ( work with both submenu and menu). You can re-inflate NavigationViewat runtime with 2 lines of code. In this example i re-inflate with new_navigation_drawer_items.xml when user successfully logged-in
navigationView.getMenu().clear(); //clear old inflated items.
navigationView.inflateMenu(R.menu.logged_in_navigation_drawer_items); //inflate new items.
When user log out just re-inflate again with logged_out_navigation_drawer_items.xml
navigationView.getMenu().clear(); //clear old inflated items.
navigationView.inflateMenu(R.menu.logged_out_navigation_drawer_items); //inflate new items.