How to Create Fragment, Example In Android Studio

Open res -> Activity FrameMainActivity->and add following code:

Layout file :-

<?xml version="1.0" encoding="utf-8"?><RelativeLayout android:id="@+id/main_layout" 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">
<com.google.android.material.tabs.TabLayout android:id="@+id/tab_layout" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_below="@+id/toolbar" android:background="?attr/colorPrimary" android:minHeight="?attr/actionBarSize" android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"/>
<androidx.viewpager.widget.ViewPager android:id="@+id/pager" android:layout_width="match_parent" android:layout_height="fill_parent" android:layout_below="@id/tab_layout"/>
</RelativeLayout>

 JAVA Flie :-

package com.example.myapplication;

import android.os.Bundle;



import androidx.appcompat.app.AppCompatActivity;
import androidx.viewpager.widget.ViewPager;

import com.google.android.material.tabs.TabLayout;

public class FrameMainActivity extends AppCompatActivity {
    @Override    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_frame_main);

        TabLayout tabLayout = (TabLayout) findViewById(R.id.tab_layout);
        tabLayout.addTab(tabLayout.newTab().setIcon(R.drawable.love));
        tabLayout.addTab(tabLayout.newTab().setText("Chat"));
        tabLayout.addTab(tabLayout.newTab().setText("Status"));
        tabLayout.addTab(tabLayout.newTab().setText("Call"));
        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) {
            }
        });
    }

}

Create Fragment Activity :- 

1. Teb1:-

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".Tab1">
<!-- TODO: Update blank fragment layout -->
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:textSize="60dp"
android:textColor="#481D85"
android:textStyle="bold|italic"
android:text="@string/hello_blank_fragment" />
</FrameLayout>

2. Teb2 :-
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".Tab2">

    <!-- TODO: Update blank fragment layout -->
    <TextView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:gravity="center"
        android:textSize="60dp"
        android:textColor="#EEE211"
        android:textStyle="bold|italic"
 android:text="@string/hello_blank_fragment" />

</FrameLayout>
3. Teb3 :- 
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".Tab3">

    <!-- TODO: Update blank fragment layout -->
    <TextView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:gravity="center"
        android:textSize="60dp"
        android:textColor="#00BFA5"
        android:textStyle="bold|italic"
        android:text="@string/hello_blank_fragment" />
</FrameLayout>