Start activity for result

Getting a result from an activity with using startActivityForResult() method.

Sample pictures

Java code

package com.example.startactivityforresult;

import android.app.Activity;
import android.content.Intent;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    Button button;
    public static final int REQUEST_CODE =  0X996;


    @Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        if(requestCode == REQUEST_CODE){

            if(resultCode == Activity.RESULT_OK){

                String str = data.getStringExtra(Main2Activity.EXTRA_DATA);
                Toast.makeText(getApplicationContext(),str,Toast.LENGTH_LONG).show();
            }
        }
    }

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

        button = findViewById(R.id.button);

        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                Intent intent = new Intent(MainActivity.this,Main2Activity.class);
                startActivityForResult(intent,REQUEST_CODE);
            }
        });

    }
}

package com.example.startactivityforresult;

import android.app.Activity;

import android.content.Intent;

import android.support.annotation.Nullable;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

Button button;

public static final int REQUEST_CODE = 0X996;

@Override

protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {

super.onActivityResult(requestCode, resultCode, data);

if(requestCode == REQUEST_CODE){

if(resultCode == Activity.RESULT_OK){

String str = data.getStringExtra(Main2Activity.EXTRA_DATA);

Toast.makeText(getApplicationContext(),str,Toast.LENGTH_LONG).show();

}

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

button = findViewById(R.id.button);

button.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

Intent intent = new Intent(MainActivity.this,Main2Activity.class);

startActivityForResult(intent,REQUEST_CODE);

}

});

}

package com.example.startactivityforresult;

import android.app.Activity;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;

public class Main2Activity extends AppCompatActivity {

    TextView textView;
    public static final String EXTRA_DATA = "EXTRA_DATA";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);

        textView = findViewById(R.id.textView);

        textView.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {

                Intent data = new Intent();
                data.putExtra(EXTRA_DATA,"for result!!!!!!");
                setResult(Activity.RESULT_OK,data);
                finish();

            }
        });

    }
}