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How to make the top bar?

Why when I write this code the application crashing?
Toolbar mToolbar = findViewById(R.id.scroll_top_bar);
setSupportActionBar(mToolbar);
This is the xml code
<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:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".DisplayInformations">
<com.google.android.material.appbar.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:liftOnScroll="true">
<com.google.android.material.appbar.CollapsingToolbarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:src="#drawable/ic_launcher_background" />
<androidx.appcompat.widget.Toolbar
android:id="#+id/scroll_top_bar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize" />
</com.google.android.material.appbar.CollapsingToolbarLayout>
</com.google.android.material.appbar.AppBarLayout>
</LinearLayout>
This is the java code
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_display_informations);
Toolbar mToolbar = findViewById(R.id.scroll_top_bar);
setSupportActionBar(mToolbar);
}
public boolean onCreateOptionsMenu(Menu menu) {
super.onCreateOptionsMenu(menu);
getMenuInflater().inflate(R.menu.menu_display_informations,menu);
return true;
}
"You may find a mistake in my question because I am new to the stack over flow platform"

Try this one article: https://guides.codepath.com/android/using-the-app-toolbar
And also this one:
https://www.programcreek.com/java-api-examples/?api=androidx.appcompat.widget.Toolbar

onCreateOptionsMenu not called in fragment when using fragment transaction. Will appear when fragment is included in XML

I have a menu created that I am trying to display in my Fragment. Everything works well if the fragment is included in the activities xml layout file. But if I try to add the fragment to the frameLayout via fragment transaction without changing any other implementation the menu will not appear.
Activity
Fragment frag = Fragment.newInstance();
getSupportFragmentManager().beginTransaction()
.replace(R.id.frame, frag)
.commit();
Toolbar toolbar = findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
Fragment
#Override
public void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setHasOptionsMenu(true);
}
#Override
public void onCreateOptionsMenu(final Menu menu, final MenuInflater
inflater) {
inflater.inflate(R.menu.menu, menu);
}
Activity Layout
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
>
<FrameLayout
android:id="#+id/frame"
android:layout_width="match_parent"
android:layout_weight=".60"
android:layout_height="0dp">
<!--<fragment-->
<!--android:id="#+id/frag"-->
<!--android:name="name"-->
<!--android:layout_width="match_parent"-->
<!--android:layout_height="match_parent">-->
<!--</fragment>-->
</FrameLayout>
<FrameLayout
android:id="#+id/controls_frame"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<fragment
android:id="#+id/controls"
android:name="ControlsFrag"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</FrameLayout>
</LinearLayout>
Fragment Layout
<?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"
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/softGray"
android:clickable="true"
android:focusable="true"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<android.support.design.widget.AppBarLayout
android:id="#+id/app_bar_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/white"
android:theme="#style/AppTheme.AppBarOverlay"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsing_toolbar"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
app:collapsedTitleTextAppearance="#style/collapsedText"
app:contentScrim="#color/softGray"
app:expandedTitleMarginEnd="64dp"
app:expandedTitleMarginStart="48dp"
app:expandedTitleTextAppearance="#style/expandedText"
app:layout_scrollFlags="scroll|exitUntilCollapsed"
app:title="#string/action_groups">
<android.support.v7.widget.AppCompatImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop"
app:layout_collapseMode="parallax"
app:layout_collapseParallaxMultiplier="0.5"
app:srcCompat="#drawable/ic_skyscraper" />
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?actionBarSize"
app:layout_collapseMode="pin"
app:popupTheme="#style/AppTheme.PopupOverlay" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v4.widget.NestedScrollView
android:id="#+id/scrollview"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<android.support.v7.widget.RecyclerView
android:id="#+id/main_groups_recycler"
android:layout_width="match_parent"
android:layout_height="match_parent">
</android.support.v7.widget.RecyclerView>
</android.support.v4.widget.NestedScrollView>
</android.support.design.widget.CoordinatorLayout>
Menu Layout
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
>
<item
android:id="#+id/search"
android:enabled="true"
android:icon="#drawable/ic_search_black_24dp"
android:title="#string/string"
app:showAsAction="ifRoom"
/>
<item
android:id="#+id/edit"
android:enabled="true"
android:icon="#drawable/ic_edit_black_alpha_24dp"
android:title="#string/string"
app:showAsAction="ifRoom"
/>
<item
android:id="#+id/add"
android:enabled="true"
android:icon="#drawable/ic_add_black_24dp"
android:title="#string/string"
app:showAsAction="ifRoom"
/>
</menu>

adding an image inside navigation drawer - android

I want to add an image with a link inside a navigation drawer,
is it possible to add an image inside navigation drawer ?
I added coding like this but it is showing below error please check
ImageView imageView6 = (ImageView) findViewById(R.id.imageView6);
imageView6.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
specialOffers = (WebView) findViewById(R.id.specialOffers);
specialOffers.getSettings().setJavaScriptEnabled(true);
specialOffers.loadUrl("http://www.fbcdubai.com/membership/offres-privileges/");
}
});
}

open nav_header_layout_name.xml and add image view say (ProfileImage)
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/nav_head"
android:layout_width="match_parent"
android:layout_height="wrap_content"
xmlns:tools="http://schemas.android.com/tools"
android:background="#drawable/side_nav_bar"
android:gravity="bottom"
android:orientation="vertical"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:theme="#style/ThemeOverlay.AppCompat.Dark">
<ImageView
android:id="#+id/home_profile_image"
android:layout_width="120dp"
android:layout_height="170dp"
android:paddingTop="#dimen/nav_header_vertical_spacing"
android:layout_gravity="center"
android:src="#drawable/profile_image"/>
</LinearLayout>
to access this image view from the java class:
- NavigationView navigationView = findViewById(R.id.nav_view_id);
- View hView = navigationView.getHeaderView(0);
- ImageView ProfileImage = (ImageViwe) hView.findViewById(R.id.home_profile_image);

create a listView inside the drawer navigation then create a custom item with image view finally attach it to a custom adapter
<?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/***"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<android.support.design.widget.NavigationView
android:id="#+id/***"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
android:fitsSystemWindows="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<include layout="#layout/****"
android:id="#+id/nav"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
<ListView
android:id="#+id/***"
android:layout_height="match_parent"
android:layout_width="match_parent"
/>
</LinearLayout>
</android.support.design.widget.NavigationView>
cust item
enter code here
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="8dp"
android:background="#00000000">
<ImageView
android:id="#+id/****"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
<TextView
android:id="#+id/****"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
</LinearLayout>

Certainly you can do this by setting a listener to your image inside the getView method of the adapter
discu.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
//put here your code
});

Drawer Layout hamburger and toolbar not visible despite working nav drawer?

I am currently creating a navigation menu without using fragments. I've seemingly created the working system that opens classes and keeps the navigation bar present at each stage by using a BaseActivity and inheriting it into the classes that need the drawer. However upon loading the app seemingly the 3 bar 'Hamburger' icon isn't present and neither is the toolbar at the top (See photo). The navigation bar does seemingly work as I can swipe from the left and click to load other classes. I feel like my onCreate() in my BaseActivity is missing something but with googling I can't seem to find a solution.
Image of current issue:
Image of Nav Bar Working with issue in background:
This is my base activity:
import android.content.Intent;
import android.os.Bundle;
import android.support.design.widget.NavigationView;
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 BaseActivity extends AppCompatActivity {
DrawerLayout drawerLayout;
ActionBarDrawerToggle actionBarDrawerToggle;
Toolbar toolbar;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
NavigationView navigationView = (NavigationView) findViewById(R.id.navigation_view);
drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
actionBarDrawerToggle = new ActionBarDrawerToggle(this, drawerLayout, toolbar, R.string.drawer_open, R.string.drawer_closed);
drawerLayout.addDrawerListener(actionBarDrawerToggle);
navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
#Override
public boolean onNavigationItemSelected(MenuItem item) {
Intent anIntent;
switch (item.getItemId()) {
case R.id.nav_homepage:
anIntent = new Intent(getApplicationContext(), homepage.class);
startActivity(anIntent);
drawerLayout.closeDrawers();
break;
case R.id.nav_add_roster:
anIntent = new Intent(getApplicationContext(), add_roster.class);
startActivity(anIntent);
drawerLayout.closeDrawers();
break;
case R.id.nav_check_schedule:
anIntent = new Intent(getApplicationContext(), schedule.class);
startActivity(anIntent);
drawerLayout.closeDrawers();
break;
}
return false;
}
});
}
}
Here's my homepage which is what is loaded initially:
import android.os.Bundle;
import android.widget.FrameLayout;
public class homepage extends BaseActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
FrameLayout contentFrameLayout = (FrameLayout) findViewById(R.id.content_frame); //Remember this is the FrameLayout area within your content_main.xml
getLayoutInflater().inflate(R.layout.homepage, contentFrameLayout);
}
}
Here's my activity main:
<?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">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/content_frame"/>
</LinearLayout>
<android.support.design.widget.NavigationView
android:id="#+id/navigation_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 this, add the code below in your BaseActivity :
#Override
public void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
actionBarDrawerToggle.syncState();
}
#Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
actionBarDrawerToggle.onConfigurationChanged(newConfig);
}
EDIT:
Enable the home button in your onCreate function of BaseActivity as well :
getSupportActionBar().setHomeButtonEnabled(true);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
There is missing a toolbar layout in your 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"
android:fitsSystemWindows="true"
tools:openDrawer="start">
<android.support.design.widget.CoordinatorLayout
android:id="#+id/rootLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#eeeeee">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light" />
</android.support.design.widget.AppBarLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/content_frame"/>
</LinearLayout>
</android.support.design.widget.CoordinatorLayout>
<android.support.design.widget.NavigationView
android:id="#+id/navigation_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>
Hope this helps;
Sorry for my english.

Try this way,
<?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_toolbar"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<android.support.design.widget.NavigationView
android:id="#+id/navigation_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>
and in app_bar_toolbar.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"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<RelativeLayout
android:id="#+id/relative_tool_bar"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize">
</android.support.v7.widget.Toolbar>
</RelativeLayout>
</android.support.design.widget.AppBarLayout>
<include layout="#layout/content_main" />
</android.support.design.widget.CoordinatorLayout>
and in content_main.xml, use this.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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="com.esec_0052.fingertips.FingerTipMainActivity"
tools:showIn="#layout/app_bar_finger_tip_main">
<FrameLayout
android:id="#+id/frame_parent"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</RelativeLayout>

Android - fragments don't show

I created one acivity and a few fragments. I try to show one of them after start-up but I see empty screen, without fragments (but with NavigationDrawer)
What do I do wrong?
I have no idea where my mistake is.
Thank you!
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);
getSupportFragmentManager().beginTransaction()
.replace(R.id.content, new DashboardFragment()).commit();
...
public class DashboardFragment extends Fragment {
...
MainActivity.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">
<android.support.design.widget.AppBarLayout
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:theme="#style/AppTheme.AppBarOverlay">
<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.PopupOverlay"/>
</android.support.design.widget.AppBarLayout>
<FrameLayout
android:id="#+id/content"
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>
Fragment:
<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.romansytnyk.studentstudio.fragments.DashboardFragment">
<ScrollView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/scrollView"
tools:context=".MainActivity">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/view">
<TextView
android:id="#+id/textView"
android:text="Week info \n\n"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</android.support.v7.widget.CardView>
</RelativeLayout>
</ScrollView>
</FrameLayout>

first you should add fragment :
FragmentManager fm=getSupportFragmentManager();
FragmentTransaction ft = fm.beginTransaction();
ft.add([FRAGMENT],[STRING TAG]);
ft.commit();