Toolbar Widget as Action Bar

Hi guys, Recently in my android projects i used toolbar alot. And most common use i found was showing a title with a back button at the top in the toolbar. Well i used both in Fragments and Activities. So how we can create a simple toolbar is as follows :

1. MainActivity

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.MenuItem;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

    private Toolbar toolbar;
    private TextView tvTitle;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        setToolBar();
    }

    private void setToolBar() {
        toolbar=(Toolbar)findViewById(R.id.toolbar);
        tvTitle=(TextView)findViewById(R.id.tv_title);
        tvTitle.setText("Toolbar Title");
        setSupportActionBar(toolbar);
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {

        switch (item.getItemId()){
            case android.R.id.home:
                finish();
                break;
        }
        return super.onOptionsItemSelected(item);
    }
}

2. activity_main.xml

<RelativeLayout 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=".MainActivity">

    <include
        layout="@layout/toolbar"/>

    <TextView android:text="@string/hello_world"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true" />

</RelativeLayout>

3. toolbar.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:orientation="vertical"
    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="wrap_content"
 android:minHeight="?attr/actionBarSize"
 app:theme="@style/ToolBarTheme">


        <TextView
            android:id="@+id/tv_title"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:gravity="center"
          android:minHeight="?attr/actionBarSize"
            android:layout_marginRight="?attr/actionBarSize"
            android:textAppearance="?android:textAppearanceMedium"
            android:textColor="@android:color/black" />

    </android.support.v7.widget.Toolbar>

</LinearLayout>

4. style.xml

<resources>

    <!-- Base application theme. --> 

   <style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
        <!-- Customize your theme here. -->

    </style>

    <style name="ToolBarTheme" parent="Base.ThemeOverlay.AppCompat.Dark.ActionBar">
        <item name="android:textColorPrimary">#000000</item>
        <item name="android:textColorSecondary">#ffffff</item>
    </style>

</resources>

Github Link :- https://github.com/CammyKamal/BlogTutorials/tree/master/AddingToolbar