Free Online Tutorials

Example 1: Fragment and FrameLayout

Step 1: create a new android project

Step 2: File res/layout/activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<android.widget.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"
    tools:context=".MainActivity">

    <TextView
        android:id="@+id/text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:text="TUTORIALSPOTS.COM" />

    <FrameLayout
        android:id="@+id/fragment"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_below="@id/text"
        android:layout_weight="1" />

</android.widget.RelativeLayout>

Step 3: File res/layout/landscape_fragment.xml

<?xml version="1.0" encoding="utf-8"?>
<android.widget.LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent"
    android:layout_height="match_parent">

    <EditText
        android:id="@+id/editTextEmail"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="5dp"
        android:layout_marginLeft="5dp"
        android:layout_marginTop="5dp"
        android:ems="10"
        android:hint="Email"
        android:inputType="textPersonName" />

    <EditText
        android:id="@+id/editTextPassword"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="false"
        android:layout_marginStart="15dp"
        android:layout_marginLeft="15dp"
        android:layout_marginTop="5dp"
        android:layout_toRightOf="@id/editTextEmail"
        android:ems="10"
        android:hint="Password"
        android:inputType="textPassword" />

    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"

        android:layout_marginStart="15dp"
        android:layout_marginLeft="15dp"
        android:layout_marginTop="5dp"
        android:text="Login" />
</android.widget.LinearLayout>

Step 4: File res/layout/portrait_fragment.xml

<?xml version="1.0" encoding="utf-8"?>
<android.widget.RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent"
    android:layout_height="match_parent">

    <EditText
        android:id="@+id/editTextEmail"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"

        android:layout_marginTop="5dp"
        android:ems="10"
        android:hint="Email"
        android:inputType="textPersonName" />

    <EditText
        android:id="@+id/editTextPassword"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@id/editTextEmail"
        android:layout_centerHorizontal="true"

        android:layout_marginTop="5dp"
        android:ems="10"
        android:hint="Password"
        android:inputType="textPassword" />

    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"

        android:layout_below="@id/editTextPassword"
        android:layout_centerHorizontal="true"
        android:text="Login" />
</android.widget.RelativeLayout>

Step 5: File Landscape_Fragment.java

package com.example.fragment;

import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import android.app.Fragment;

public class Landscape_Fragment extends Fragment {
    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        return inflater.inflate(R.layout.landscape_fragment, container, false);
    }
}

Step 6: File Portrait_Fragment.java

package com.example.fragment;

import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import android.app.Fragment;

public class Portrait_Fragment extends Fragment {
    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        return inflater.inflate(R.layout.portrait_fragment, container, false);
    }
}

Step 7: File MainActivity.java


package com.example.fragment;

import androidx.appcompat.app.AppCompatActivity;
import android.app.Fragment;

import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.content.res.Configuration;
import android.os.Bundle;

public class MainActivity extends AppCompatActivity {
    Fragment fragment;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Configuration configuration = getResources().getConfiguration();
        FragmentManager fragmentManager = getFragmentManager();
        FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();

        if(configuration.orientation == Configuration.ORIENTATION_LANDSCAPE){
            fragment = (Fragment) new Landscape_Fragment();
        }else{
            fragment = (Fragment) new Portrait_Fragment();
        }

        fragmentTransaction.replace(R.id.fragment, fragment, String.valueOf(configuration.orientation));
        fragmentTransaction.commit();
    }
}

For portrait orientation:

For landscape orientation: