Develop Reference

Navigation menu and add button on selective fragments in android

I need your help to understand the concept of menu in android.
I am using a navigation menu(bar) in android and load it on the MainActivity and put three different fragments.
On app start the navigation menu opened and default fragment also loaded as mentioned below.
Here everything is ok, but when i click on the third menu option (Credit Cards) then a fragment opened in that fragment, i am using ListView as mentioned below:
Now i want the add button on the bar, here you can see its below the bar.
How i can achive this? please help me out. Here i want the burger icon for navigation at left side and add icon/button at right side on same bar.
Note: I tried to add the button on the toolbar i am using inside the DrawerLayout but this button appears on all the fragments.
Here is the code for activity_main.xml:
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.ac 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:id="#+id/drawer_layout"
android:fitsSystemWindows="true"
tools:openDrawer="start">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<android.support.v7.widget.Toolbar
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="#color/colorPrimary"
android:id="#+id/toolbar"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
>
</android.support.v7.widget.Toolbar>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/fragement_container"/>
</LinearLayout>
<android.support.design.widget.NavigationView
android:layout_width="match_parent"
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.support.design.widget.NavigationView>
</android.support.v4.widget.ac>
MainActivity.java
package com.mas.mas;
import android.os.Bundle;
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.MenuItem;
public class MainActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener {
private DrawerLayout drawerLayout;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
drawerLayout = findViewById(R.id.drawer_layout);
NavigationView navigationView = findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
ActionBarDrawerToggle drawerToggle = new ActionBarDrawerToggle(this, drawerLayout, toolbar, R.string.nagivation_drawer_open, R.string.nagivation_drawer_close);
drawerLayout.addDrawerListener(drawerToggle);
drawerToggle.syncState();
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction().replace(R.id.fragement_container, new TransactionsListFragment()).commit();
setTitle("Transactions");
navigationView.setCheckedItem(R.id.transactions);
}
}
#Override
public void onBackPressed() {
if (drawerLayout.isDrawerOpen(GravityCompat.START)) {
drawerLayout.closeDrawer(GravityCompat.START);
} else {
super.onBackPressed();
}
}
#Override
public boolean onNavigationItemSelected(MenuItem menuItem) {
switch (menuItem.getItemId()) {
case R.id.transactions:
getSupportFragmentManager().beginTransaction().replace(R.id.fragement_container, new TransactionsListFragment()).commit();
setTitle("Email");
break;
case R.id.banks:
// getSupportFragmentManager().beginTransaction().replace(R.id.fragement_container, new MessageFragement()).commit();
setTitle("Banks");
break;
case R.id.cards:
setTitle("Cards");
getSupportFragmentManager().beginTransaction().replace(R.id.fragement_container, new CardsFragment()).commit();
break;
}
drawerLayout.closeDrawer(GravityCompat.START);
return true;
}
}
Thanks.

Add button in tool bar in mainActivity
<androidx.appcompat.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="#style/AppTheme.PopupOverlay">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:id="#+id/adimage"
android:layout_marginBottom="#dimen/padd_10"
android:layout_marginTop="#dimen/padd_10"
android:layout_alignParentRight="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ad"></ImageView>
</RelativeLayout>
then use this for onClick Listner In mainActivity.java
Toolbar toolbar = findViewById(R.id.toolbar);
adsImageView=toolbar.findViewById(R.id.adimage);
adsImageView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
}
hope it helps

Android Navigation Drawer with multiple Activity

I am trying to create a BaseActivity with navigation drawer and extend it in other activities so that I can reuse the the navigation drawer code.
What I have figured out so far:
I can use fragments to do this (which I can do).
I can use a BaseActivity and inflate the content area (Frame layout with id as “main_container” in my case) to show other activities. In this case I have figured out how to click on navigation drawer items to change activity.
However, when I have a button inside one of my activity (example activityA) and I want to load another activity (activityB), show a toast, etc. by clicking that button, the click listener does not work unless I write the code for the listener inside the onCreate method of the BaseActivity.
To me this does not make sense because it forces me to write all the codes inside the BaseActivity which is not the most efficient way of writing code (the activities acts like fragments so I can just use fragments instead).
What I want to know is, how to load the navigation drawer on all activities extending the BaseActivity, and still allow the activities to retain their behaviours.
Code samples
My activity_home.xml (BaseActivity)
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/drawer_layout"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".HomeActivity"
tools:openDrawer="start"
android:fitsSystemWindows="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<include
android:id="#+id/custom_tool"
layout="#layout/custom_bar"/>
<FrameLayout
android:id="#+id/main_container"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
<android.support.design.widget.NavigationView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:id="#+id/nav_display"
app:menu="#menu/nav_drawer_menu"
android:layout_gravity="start"
app:headerLayout="#layout/nav_header"/>
</android.support.v4.widget.DrawerLayout>
activity_main.xml (activityA)
<?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"
tools:context=".MainActivity">
<ImageView
android:id="#+id/imageView"
android:layout_width="0dp"
android:layout_height="147dp"
android:layout_marginStart="105dp"
android:layout_marginLeft="105dp"
android:layout_marginTop="150dp"
android:layout_marginEnd="105dp"
android:layout_marginRight="105dp"
android:layout_marginBottom="48dp"
android:contentDescription="#string/app_logo"
app:layout_constraintBottom_toTopOf="#+id/search_bar"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="1.0"
app:srcCompat="#mipmap/ic_launcher" />
<SearchView
android:id="#+id/search_bar"
android:layout_width="0dp"
android:layout_height="48dp"
android:layout_marginStart="50dp"
android:layout_marginLeft="50dp"
android:layout_marginTop="48dp"
android:layout_marginEnd="50dp"
android:layout_marginRight="50dp"
android:layout_marginBottom="50dp"
android:background="#drawable/input_default"
android:gravity="center"
app:layout_constraintBottom_toTopOf="#+id/search_button"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/imageView" />
<Button
android:id="#+id/search_button"
android:layout_width="0dp"
android:layout_height="48dp"
android:layout_marginStart="150dp"
android:layout_marginLeft="150dp"
android:layout_marginTop="50dp"
android:layout_marginEnd="150dp"
android:layout_marginRight="150dp"
android:layout_marginBottom="228dp"
android:background="#drawable/button_default"
android:text="#string/search"
android:textColor="#color/colorAccent"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/search_bar" />
</android.support.constraint.ConstraintLayout>
When the app is initially loading the “main_content” of the BaseActivity is inflated with the activity_main layout.
When I clicked the search_button inside the activity_main.xml, I want to load another activity which is only happening when I am writing the code inside the base activity.
HomeActivity
package com.example.naisse;
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.View;
import android.widget.Button;
import android.widget.FrameLayout;
import android.widget.Toast;
public class HomeActivity extends AppCompatActivity {
protected static int position;
private DrawerLayout drawer;
protected FrameLayout frames;
Button searchButton;
/**
* This flag is used just to check that launcher activity is called first time
* so that we can open appropriate Activity on launch and make list item position selected accordingly.
* */
private static boolean isLaunch = true;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
Toolbar toolbar = findViewById(R.id.custom_tool);
setSupportActionBar(toolbar);
drawer = findViewById(R.id.drawer_layout);
frames = findViewById(R.id.main_container);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.addDrawerListener(toggle);
toggle.syncState();
/*inflating the layout with activity_main*/
getLayoutInflater().inflate(R.layout.activity_main, frames);
searchButton = findViewById(R.id.search_button);
searchButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
/*removing the activity_main and inflating they layout with activity_result*/
frames.removeAllViews();
getLayoutInflater().inflate(R.layout.activity_result, frames);
}
});
}
#Override
public void onBackPressed() {
if(drawer.isDrawerOpen(GravityCompat.START)){
drawer.closeDrawer(GravityCompat.START);
}else{
super.onBackPressed();
}
}
}
Extending MainActivity with HomeActivity
MainActivity
package com.example.naisse;
import android.os.Bundle;
import android.view.View;
import android.widget.Toast;
public class MainActivity extends HomeActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
}
How to solve this issue?

I am surprised so few are interested in doing this in all these years. Maintaining the duplicated code of the DrawerLayout stuff in xml files of all activities is pretty silly.
I tried the self-answer from #Mill3r, unfortunately overriding setContentView conflicts with databinding and causes crash.
Instead of setContentView I create a method in the base activity like:
public void setContent(View contentView) {
// Find the content container
frames = findViewById(R.id.main_container);
frames.removeAllViews();
frames.addView(contentView);
// The rest of the base setup
Toolbar toolbar = findViewById(R.id.custom_tool);
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();
}
Then in all activities derided from the base, call this function after setting databinding, like:
ActivityMainBinding binding = DataBindingUtil.setContentView(this, R.layout.activity_main);
setContent(binding.getRoot());

For answer and understanding, please read the discussion between me and Mike M.
What I was initially doing was inflating the "main_container" with layout and therefore the Activity class was not getting triggered. To do that, I had to override setContentView() method inside the BaseActivity (HomeActivity in my case) and put every sharable code such as toolbar and navigation drawer inside that.
My new HomeActivity.class
public class HomeActivity extends AppCompatActivity {
private DrawerLayout drawer;
protected FrameLayout frames;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
}
#Override
public void onBackPressed() {
if(drawer.isDrawerOpen(GravityCompat.START)){
drawer.closeDrawer(GravityCompat.START);
}else{
super.onBackPressed();
}
}
#Override
public void setContentView(int layoutResID) {
// Set the base layout
super.setContentView(R.layout.activity_home);
// Find the content container
frames = findViewById(R.id.main_container);
// Inflate the extending Activity's layout into it
getLayoutInflater().inflate(layoutResID, frames);
// The rest of the base setup
Toolbar toolbar = findViewById(R.id.custom_tool);
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();
}
}
And now the toolbar and navigation drawer is shared across all activities.

Android Navigation View click listener not working [duplicate]

This question already has answers here:
NavigationView OnNavigationItemSelectedListener not being called
(3 answers)
Closed 4 years ago.
I created the Activity with the Wizard.
I deleted what I am not interested in, for example, the floating action button.
Created my custom items in the activity_main_drawer.xml
The wizard created the onNavigationItemSelected function (see code below) and I added my code so it quits the activity and goes back to the Login Screen.
So I don't know why, I see nothing interesting in the logcat so this is a logical problem. I am a newbie and Navigation View scares me a lot... Let me know if I missed anything you need.
package com.skrefi.googleplaycopy;
import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.NonNull;
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;
import android.widget.Toast;
import com.google.firebase.auth.FirebaseAuth;
public class MainActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
private FirebaseAuth firebaseAuth;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
firebaseAuth = FirebaseAuth.getInstance();
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);
}
//Don't know what this is
#Override
public void onBackPressed() {
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {
super.onBackPressed();
}
}
//Don't know what this is either
#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;
}
//In case I need it for the admin activity >> the 3 dots pop down thingy <<
#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.
MakeToast("SOMETHING");
switch (item.getItemId()){
case R.id.action_settings:
MakeToast("Settings button clicked");
return true;
}
return super.onOptionsItemSelected(item);
}
#SuppressWarnings("StatementWithEmptyBody")
#Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
switch(item.getItemId()){
case R.id.item_signout:
firebaseAuth.getInstance().signOut();
MakeToast("Signed out!");
finish();
startActivity(new Intent(MainActivity.this, LoginActivity.class));
break;
}
//DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
//drawer.closeDrawer(GravityCompat.START);
return true;
}
public void MakeToast(String text) {
Toast.makeText(this, text, Toast.LENGTH_LONG).show();
}
}
Edit:
So it may be confusing if I set the visibility to gone and I get use the layout I want right in this layout file because I get the screen without the toolbar, this is what I want. AND I want to keep that as well for the admin part, to check later in if the user is me, and if so, I get a new item in the drawer called Admin Activity which simply set the thingy visibility to visible so i get the admin screen.
Here is what you (#) asked for:
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<!--This is for a potential admin screen-->
<include
android:id="#+id/include_toolbar_with_threedots_settings"
layout="#layout/app_bar_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:visibility="gone" />
<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.constraint.ConstraintLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="This is for test"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</android.support.constraint.ConstraintLayout>
</android.support.v4.widget.DrawerLayout>

You're calling finish() before actually starting your activity while you should call it after starting your login activity. The following code will start Login activity and close the Main activity.
#SuppressWarnings("StatementWithEmptyBody")
#Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
switch(item.getItemId()){
case R.id.item_signout:
firebaseAuth.getInstance().signOut();
MakeToast("Signed out!");
startActivity(new Intent(MainActivity.this, LoginActivity.class));
finish();
break;
}
//DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
//drawer.closeDrawer(GravityCompat.START);
return true;
}

Navigation drawer is below toolbar in Android [duplicate]

This question already has answers here:
How do I use DrawerLayout to display over the ActionBar/Toolbar and under the status bar?
(10 answers)
Closed 6 years ago.
Hello everyone,
I am a newcomer to Android programming and currently working on a practice app that is more or less a patchwork of tutorial codes.
Right now I have navigation drawer below toolbar. I would like to readjust xml hierarchy so that it stays consistent with Material Design guideline and have navigation drawer above toolbar. It seems like a simple enough task, but for the life of me I can't seem to get it.
Can anyone offer any suggestions?
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:apps="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="#color/background_color">
<android.support.v7.widget.Toolbar
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/primary_color"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
apps:title="#string/app_name"/>
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:apps="http://schemas.android.com/apk/res-auto"
android:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<FrameLayout
android:id="#+id/frame_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
</FrameLayout>
<android.support.design.widget.NavigationView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:apps="http://schemas.android.com/apk/res-auto"
android:id="#+id/navigation_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
apps:itemTextColor="#000"
android:fitsSystemWindows="true"
apps:headerLayout="#layout/navigation_header"
apps:menu="#menu/drawer_menu"/>
</android.support.v4.widget.DrawerLayout>
</LinearLayout>
package android.dohyun.projectannie;
import android.os.Bundle;
import android.support.design.widget.NavigationView;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
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.MenuItem;
public class MainActivity extends AppCompatActivity {
DrawerLayout mDrawerLayout;
NavigationView mNavigationView;
FragmentManager mFragmentManager;
FragmentTransaction mFragmentTransaction;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
mNavigationView = (NavigationView) findViewById(R.id.navigation_view);
mFragmentManager = getSupportFragmentManager();
mFragmentTransaction = mFragmentManager.beginTransaction();
mFragmentTransaction.replace(R.id.frame_layout, new NotesFragment()).commit();
mNavigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
#Override
public boolean onNavigationItemSelected(MenuItem menuItem) {
mDrawerLayout.closeDrawers();
if(menuItem.getItemId() == R.id.menu_notes) {
FragmentTransaction fragmentTransactionNotes = mFragmentManager.beginTransaction();
fragmentTransactionNotes.replace(R.id.frame_layout, new NotesFragment()).commit();
}
if(menuItem.getItemId() == R.id.menu_folders) {
FragmentTransaction fragmentTransactionFolders = mFragmentManager.beginTransaction();
fragmentTransactionFolders.replace(R.id.frame_layout, new FoldersFragment()).commit();
}
if(menuItem.getItemId() == R.id.menu_trash) {
FragmentTransaction fragmentTransactionTrash = mFragmentManager.beginTransaction();
fragmentTransactionTrash.replace(R.id.frame_layout, new TrashFragment()).commit();
}
if(menuItem.getItemId() == R.id.menu_settings) {
FragmentTransaction fragmentTransactionSettings = mFragmentManager.beginTransaction();
fragmentTransactionSettings.replace(R.id.frame_layout, new SettingsFragment()).commit();
}
if(menuItem.getItemId() == R.id.menu_info) {
FragmentTransaction fragmentTransactionInfo = mFragmentManager.beginTransaction();
fragmentTransactionInfo.replace(R.id.frame_layout, new InfoFragment()).commit();
}
return false;
}
});
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
ActionBarDrawerToggle mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout, toolbar, R.string.app_name, R.string.app_name);
mDrawerLayout.setDrawerListener(mDrawerToggle);
mDrawerToggle.syncState();
}
}
The above code is a slightly modified version of the one found here, written by Ratan:
https://androidbelieve.com/navigation-drawer-with-swipe-tabs-using-design-support-library/

DrawerLayout is a special FrameLayout that supports navigation drawer.
The child view that doesn't have a layout_gravity is the main view. The child view that has a layout_gravity e.g. android:layout_gravity="start" is the nav drawer.
This means that DrawerLayout should be the top level view group. In other words, put your layout with the Toolbar inside the DrawerLayout.

Icon to open navigation drawer is missing in action bar of AppCompatActivity in Android

I am trying to use the android navigation drawer with the action bar of AppCompatActivity. But when I implement the action bar the icon to open the navigation drawer is missing in it.
This is what I want to be displayed
This is a screenshot of my current action bar
You can see my code below.
This is my 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"
android:id="#+id/main_drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<!-- This LinearLayout represents the contents of the screen -->
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<!-- The ActionBar displayed at the top -->
<include
layout="#layout/action_bar"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<!-- The main content view where fragments are loaded -->
<FrameLayout
android:id="#+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
<!-- The navigation drawer that comes from the left -->
<!-- Note that `android:layout_gravity` needs to be set to 'start' -->
<android.support.design.widget.NavigationView
android:id="#+id/nvView"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
android:background="#android:color/white"/>
<!--app:headerLayout="#layout/nav_header"
app:menu="#menu/drawer_view" />-->
</android.support.v4.widget.DrawerLayout>
This is my action_bar.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
xmlns:android="http://schemas.android.com/apk/res/android">
</android.support.v7.widget.Toolbar>
This is my MainActivity
package com.blog.waiyanhein.llks.llks;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.view.Menu;
import android.view.MenuItem;
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar)findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
}
#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);
}
}
Why is the icon to open the navigation drawer missing using my code?

You didn't implement the NavigationDrawer in your Activityi guess.i've had the same problem and that fixed with the following code.
In your Activity:
private DrawerLayout drawerLayout;
In your onCreate:
NavigationView navigationView = (NavigationView) findViewById(R.id.navigation_view);
navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
#Override
public boolean onNavigationItemSelected(MenuItem menuItem) {
if (menuItem.isChecked()) menuItem.setChecked(false);
else menuItem.setChecked(true);
drawerLayout.closeDrawers();
switch (menuItem.getItemId()) {
case R.id.home:
drawerLayout.closeDrawers();
return true;
default:
return true;
}
}
});
drawerLayout = (DrawerLayout) findViewById(R.id.drawer);
ActionBarDrawerToggle actionBarDrawerToggle =
new ActionBarDrawerToggle(this, drawerLayout, toolbar, R.string.openDrawer, R.string.closeDrawer) {
#Override
public void onDrawerClosed(View drawerView) {
super.onDrawerClosed(drawerView);
}
#Override
public void onDrawerOpened(View drawerView) {
super.onDrawerOpened(drawerView);
}
};
drawerLayout.setDrawerListener(actionBarDrawerToggle);
actionBarDrawerToggle.syncState();
Strings.xml:
<string name="openDrawer">Navigation</string>
<string name="closeDrawer">Close Navigation</string>
Then it should work.

Try this code,
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar)findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setDisplayShowHomeEnabled(true);
getSupportActionBar().setHomeButtonEnabled(true);
}

You may need to include:
actionBarDrawerToggle.syncState();
The answer here may help:
Appcompatv7 - v21 Navigation drawer not showing hamburger icon