How To Pass Data from One Activity To Another Activity || Android Studio Tutorial [2022]

 Here is the tutorial on how to pass data from one activity to another in android studio.

Code Snippet:

AndroidManifest.xml:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.aarappstudios.passdatabetweenactivity">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.PassDataBetweenActivity">
        <activity
            android:name=".SecondActivity"
            android:exported="true" />
        <activity
            android:name=".MainActivity"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

MainActivity.java

package com.aarappstudios.passdatabetweenactivity;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

public class MainActivity extends AppCompatActivity {

    private EditText nameEditText,ageEditText;
    private Button sendButton;

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

        nameEditText=findViewById(R.id.editTextName);
        ageEditText=findViewById(R.id.editTextAge);
        sendButton=findViewById(R.id.sendButton);

        sendButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                String name=nameEditText.getText().toString();
                int age= Integer.parseInt(ageEditText.getText().toString());

                Intent intent=new Intent(MainActivity.this,SecondActivity.class);
                intent.putExtra("keyname",name);
                intent.putExtra("keyage",age);

                startActivity(intent);
                
            }
        });




    }
}

activity_main.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"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:layout_margin="16dp"
    tools:context=".MainActivity">


    <EditText
        android:id="@+id/editTextName"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:inputType="textPersonName"
        android:hint="Name" />



    <EditText
        android:id="@+id/editTextAge"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:inputType="number"
        android:hint="Age"
        android:layout_marginTop="8dp"
        />

    <Button
        android:id="@+id/sendButton"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Send Data"
        android:layout_marginTop="8sp"
        />


</LinearLayout>

SecondActivity.java:

package com.aarappstudios.passdatabetweenactivity;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.widget.TextView;

public class SecondActivity extends AppCompatActivity {

    TextView nameTextView,ageTextView;

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

        nameTextView=findViewById(R.id.nameTextView);
        ageTextView=findViewById(R.id.ageTextView);

        String name;
        int age;

        name=getIntent().getStringExtra("keyname");
        age=getIntent().getIntExtra("keyage",0);

        nameTextView.setText("Name : " +name);
        ageTextView.setText("Age : " + age);





    }
}

activity_second.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"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:layout_margin="16dp"
    tools:context=".SecondActivity">


    <TextView
        android:id="@+id/nameTextView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:textSize="16sp"
        android:text="Name : " />

    <TextView
        android:id="@+id/ageTextView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="8dp"
        android:textSize="16sp"
        android:text="Age : " />
</LinearLayout>