Get result from another activity using registerForActivityResult | Android Studio | Java

How To Get Result From Another Activity Using the registerForActivityResult?

In this tutorial we will learn how to get result from another activity using registerForActivityResult. You might aware to use the method startActivityForResult which is now deprecated. So we will use the newer way that is registerForActivityResult.

We will create 2 Activities the MainActivity and the FormActivity. From the MainActivity we will launch the FormActivity to input some data and get that data as result back to the MainActivity.

>>Check For Kotlin<<

Code:

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:gravity="center"
    android:orientation="vertical"
    tools:context=".MainActivity">

    <Button
        android:id="@+id/addUserBtn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Add User" />

    <TextView
        android:id="@+id/nameTv"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:textSize="18sp" />

    <TextView
        android:id="@+id/emailTv"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:textSize="18sp" />

</LinearLayout>

MainActivity.java

package com.technifysoft.myapplication;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

import androidx.activity.result.ActivityResult;
import androidx.activity.result.ActivityResultCallback;
import androidx.activity.result.ActivityResultLauncher;
import androidx.activity.result.contract.ActivityResultContracts;
import androidx.appcompat.app.AppCompatActivity;

public class MainActivity extends AppCompatActivity {

    private Button addUserBtn;
    private TextView nameTv, emailTv;

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

        //init UI Views
        addUserBtn = findViewById(R.id.addUserBtn);
        nameTv = findViewById(R.id.nameTv);
        emailTv = findViewById(R.id.emailTv);

        //handle addUserBtn click, start Next Activity to get data from it
        addUserBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                // The launcher with the Intent you want to start
                Intent intent = new Intent(MainActivity.this, FormActivity.class);
                launchSomeActivity.launch(intent);
            }
        });

    }

    private ActivityResultLauncher<Intent> launchSomeActivity = registerForActivityResult(
            new ActivityResultContracts.StartActivityForResult(),
            new ActivityResultCallback<ActivityResult>() {
                @Override
                public void onActivityResult(ActivityResult result) {
                    if (result.getResultCode() == Activity.RESULT_OK) {
                        Intent data = result.getData();

                        String name = data.getStringExtra("name");
                        String email = data.getStringExtra("email");

                        nameTv.setText(name);
                        emailTv.setText(email);

                        Toast.makeText(MainActivity.this, name + "\n" + email, Toast.LENGTH_SHORT).show();
                    } else {
                        Toast.makeText(MainActivity.this, "Cancelled...", Toast.LENGTH_SHORT).show();
                    }
                }
            });

}

activity_form.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:padding="10dp"
    tools:context=".FormActivity">

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

    <EditText
        android:id="@+id/emailEt"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="Email" />

    <Button
        android:id="@+id/submitBtn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:text="Submit" />

</LinearLayout>

FormActivity.java

package com.technifysoft.myapplication;

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

import androidx.appcompat.app.AppCompatActivity;

public class FormActivity extends AppCompatActivity {

    private EditText nameEt, emailEt;
    private Button submitBtn;

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

        setTitle("Add User");

        //init UI Views
        nameEt = findViewById(R.id.nameEt);
        emailEt = findViewById(R.id.emailEt);
        submitBtn = findViewById(R.id.submitBtn);

        //handle submitBtn click, input data and pass to previous activity
        submitBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //get data
                String name = nameEt.getText().toString().trim();
                String email = emailEt.getText().toString().trim();
                //put data to intent to get in previous activity
                Intent intent = new Intent();
                intent.putExtra("name", name);
                intent.putExtra("email", email);
                setResult(RESULT_OK, intent);
                //finishing activity
                finish();
            }
        });

    }

}

Screenshot: