Android PassData Between Fragment

PassData Between Fragment:

The communication of data between the fragments is a routine activity when developing an android application, and it’s a process intended for the transfer of knowledge from one fragment to another.

Example:

                                    

// activity_pass_data_fragment_example.xml
<?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"
        tools:context=".PassDataFragmentExample">
    
        <FrameLayout
           android:id="@+id/frame_layout"
           android:layout_width="match_parent"
           android:layout_height="match_parent"/>
   
</RelativeLayout>


// fragment_fragment_first.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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=".FragmentFirst"
        android:padding="16dp"
        android:gravity="center"
        android:orientation="vertical">
   
        <EditText
           android:id="@+id/text1"
           android:layout_width="match_parent"
           android:layout_height="wrap_content"
           android:hint="Enter your Text"
           />
   
        <Button
           android:id="@+id/submit"
           android:layout_width="wrap_content"
           android:layout_height="wrap_content"
           android:text="Submit"
           android:textColor="@color/colorWhite"
           android:background="@color/colorPrimary"
           android:layout_marginTop="50dp"
           />
     
</LinearLayout>


// fragment_fragment_second.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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=".FragmentSecond"
        android:background="#00FFFF"
        android:gravity="center"
        android:padding="16dp"
        android:orientation="vertical">
   
        <TextView
           android:id="@+id/textview1"
           android:layout_width="wrap_content"
           android:layout_height="wrap_content"
           android:text=""
           android:textSize="55sp"
           android:textColor="@color/colorWhite"
           android:layout_marginBottom="20dp"
           />
   
        <Button
           android:id="@+id/back"
           android:layout_width="wrap_content"
           android:layout_height="wrap_content"
           android:text="Back"
           android:textSize="20dp"
           android:textAllCaps="false"
           android:textColor="@color/colorWhite"
           android:background="@color/colorOrange"
           />
   
</LinearLayout>

                                    
// PassDataFragmentExample.java


package com.example.widgets;  
import androidx.fragment.app.FragmentManager;
import androidx.fragment.app.FragmentTransaction;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.FrameLayout;
    
public class PassDataFragmentExample extends AppCompatActivity {
   
    FrameLayout frameLayout;
   
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_pass_data_fragment_example);
   
        frameLayout=(FrameLayout)findViewById(R.id.frame_layout);
   
        FragmentFirst fragmentFirst=new FragmentFirst();
        FragmentManager fragmentManager=getSupportFragmentManager();
        FragmentTransaction fragmentTransaction=fragmentManager.beginTransaction();
        fragmentTransaction.replace(R.id.frame_layout,fragmentFirst);
        fragmentTransaction.commit();
   
    }
}


// FragmentFirst.java

package com.example.widgets; 
import android.os.Bundle;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentManager;
import androidx.fragment.app.FragmentTransaction;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
   
public class FragmentFirst extends Fragment {
   
    EditText editText;
    Button submit;
   
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                            Bundle savedInstanceState) {
        // Inflate the layout for this fragment
   
        View view=inflater.inflate(R.layout.fragment_fragment_first, container, false);
        editText=(EditText)view.findViewById(R.id.text1);
        submit=(Button) view.findViewById(R.id.submit);
   
        submit.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
   
                String text=editText.getText().toString().trim();
                if (text.equals("")){
                    Toast.makeText(getActivity(),"Plz fill the field",Toast.LENGTH_SHORT).show();
                }else {
                    FragmentSecond fragmentA=new FragmentSecond(text);
                    FragmentManager fragmentManager=getFragmentManager();
                    FragmentTransaction fragmentTransaction=fragmentManager.beginTransaction();
                    fragmentTransaction.replace(R.id.frame_layout,fragmentA);
                    fragmentTransaction.commit();
                }
            }
        });
   
        return view;
    }
   
}


// FragmentSecond.java

package com.example.widgets;        
import android.annotation.SuppressLint;
import android.os.Bundle;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentManager;
import androidx.fragment.app.FragmentTransaction;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.TextView;
   
   @SuppressLint("ValidFragment")
   public class FragmentSecond extends Fragment {
   
    TextView textView;
    Button back;
    String text;
   
    public FragmentSecond(String text) {
        this.text = text;
    }
   
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                            Bundle savedInstanceState) {
        // Inflate the layout for this fragment
   
        View view=inflater.inflate(R.layout.fragment_fragment_second, container, false);
        textView=(TextView)view.findViewById(R.id.textview1);
        back=(Button)view.findViewById(R.id.back);
   
        textView.setText(text);
   
        back.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
   
                FragmentFirst fragmentFirst=new FragmentFirst();
                FragmentManager fragmentManager=getFragmentManager();
                FragmentTransaction fragmentTransaction=fragmentManager.beginTransaction();
                fragmentTransaction.replace(R.id.frame_layout,fragmentFirst);
                fragmentTransaction.commit();
            }
        });
   
        return view;
   
    }

}

                                    
                                        // PassDataFragmentExample.kt

package com.example.widgets

import android.os.Bundle
import androidx.appcompat.app.AppCompatActivity
import androidx.fragment.app.FragmentManager
import androidx.fragment.app.FragmentTransaction
import kotlinx.android.synthetic.main.activity_pass_data_fragment_example.*

class PassDataFragmentExample : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_pass_data_fragment_example)

        val fragmentFirst = FragmentFirst()
        val fragmentManager: FragmentManager = supportFragmentManager
        val fragmentTransaction: FragmentTransaction = fragmentManager.beginTransaction()
        fragmentTransaction.replace(R.id.frame_layout, fragmentFirst)
        fragmentTransaction.commit()
    }
}

// FragmentFirst.kt

package com.example.widgets

import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.Button
import android.widget.EditText
import android.widget.Toast
import androidx.fragment.app.Fragment
import kotlinx.android.synthetic.main.fragment_fragment_first.*

class FragmentFirst : Fragment() {

    override fun onCreateView(
        inflater: LayoutInflater, container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {
        // Inflate the layout for this fragment
        val view: View = inflater.inflate(R.layout.fragment_fragment_first, container, false)

        submit.setOnClickListener {
            val text = text1.text.toString().trim()
            if (text.isEmpty()) {
                Toast.makeText(activity, "Plz fill the field", Toast.LENGTH_SHORT).show()
            } else {
                val fragmentA = FragmentSecond(text)
                val fragmentManager = fragmentManager
                val fragmentTransaction = fragmentManager?.beginTransaction()
                fragmentTransaction?.replace(R.id.frame_layout, fragmentA)
                fragmentTransaction?.commit()
            }
        }

        return view
    }
}

// FragmentSecond.kt

package com.example.widgets

import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.Button
import android.widget.TextView
import androidx.fragment.app.Fragment
import kotlinx.android.synthetic.main.fragment_fragment_second.*

class FragmentSecond(private val text: String) : Fragment() {

    override fun onCreateView(
        inflater: LayoutInflater, container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {
        // Inflate the layout for this fragment
        val view: View = inflater.inflate(R.layout.fragment_fragment_second, container, false)

        textview1.text = text

        back.setOnClickListener {
            val fragmentFirst = FragmentFirst()
            val fragmentManager = fragmentManager
            val fragmentTransaction = fragmentManager?.beginTransaction()
            fragmentTransaction?.replace(R.id.frame_layout, fragmentFirst)
            fragmentTransaction?.commit()
        }

        return view
    }
}

Output