Intent Activity For Result

Intent Activity For Result

first page

package com.gohool.showactivity.showactivity;

import android.content.Intent;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.Toast;

import static android.app.Activity.RESULT_OK;

public class FirstActivity extends AppCompatActivity {

    private Button goToSecondButton;

    private final int REQUEST_CODE = 2;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_first);

        goToSecondButton = (Button) findViewById(R.id.showButtonID);

        goToSecondButton.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

                //Code goes here

                Intent intent = new Intent(FirstActivity.this, SecondActivity.class);

                intent.putExtra("Message", "Hello From First Activity");

                intent.putExtra("SecondMessage", "Hello Again");

                intent.putExtra("Value", 123);

                //startActivity(intent);

                startActivityForResult(intent, REQUEST_CODE);

                //startActivity(new Intent(FirstActivity.this, SecondActivity.class));

            }

        });

    }

    @Override

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

        super.onActivityResult(requestCode, resultCode, data);

        if (requestCode == REQUEST_CODE) {

             if (resultCode == RESULT_OK) {

                  String result = data.getStringExtra("returnData");

                 Toast.makeText(FirstActivity.this, result, Toast.LENGTH_LONG).show();

             }

        }

    }

}

second activity  

package com.gohool.showactivity.showactivity;

import android.content.Intent;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.TextView;

public class SecondActivity extends AppCompatActivity {

    private TextView showMessage;

    private Button backButton;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_second);

        Bundle extras = getIntent().getExtras();

        showMessage = (TextView) findViewById(R.id.messageTextView);

        backButton = (Button) findViewById(R.id.goBackButtonID);

        //check

        if (extras != null) {

            String message = extras.getString("SecondMessage");

            int myInt = extras.getInt("Value");

            showMessage.setText("Message is" + message + " and : " + String.valueOf(myInt));

        }

        backButton.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

                //code goes here

                Intent returnIntent = getIntent();

                returnIntent.putExtra("returnData", "From SecondActivity");

                setResult(RESULT_OK, returnIntent);

                finish();

            }

        });

    }

}