Passing value from One Activity to Other in Android

Hello guys, how are you today? Its super Thursday, and hope you will be in the best of your life.

Today we are going to see how to pass value from one activity to other in Android. So lets get started.

 Download 

1) First of all create an Android Application Project.

2) Next, go to "res/layout/activity_main.xml" and create one editText and one "send" button there. The code looks like.

activity_main.xml 

<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"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity"
    android:orientation="vertical" >

    <EditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id = "@+id/et" />
    
    <Button 
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id = "@+id/send"
        android:text="send"/>

</LinearLayout>

3) Next go to "src/your_package_name/MainActivity.java" and here we are goin to retrieve the value written in the EditText and send the value to the "Second_Activity.java" on clicking the send button. The code looks like the following.

MainActivity.java

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;

public class MainActivity extends Activity implements OnClickListener {
    EditText et;
    Button send;

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

        et = (EditText) findViewById(R.id.et);
        send = (Button) findViewById(R.id.send);

        send.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub
        switch (v.getId()) {
        case R.id.send:
            Intent i = new Intent(this, Second_Activity.class);
            i.putExtra("value", et.getText().toString());
            startActivity(i);
            break;
        }
    }

}

4) Now go to "res/layout" and create an Android Xml file there, for our case lets name it "show.xml" .

show.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >
    
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id = "@+id/tv"
        android:text="Demo text"
        android:textColor="#000000" />
    

</LinearLayout>

5) Next go to "src/your_package_name/Second_Activity.java" and here we are going to retrieve the value send in by MainActivity.java and set the same value  in the TextView.

Second_Activity.java

import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;
import android.widget.Toast;

public class Second_Activity extends Activity {
    TextView tv;
    String word;
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.show);
        try{
        word = getIntent().getExtras().getString("value");
        Toast.makeText(this, word, Toast.LENGTH_SHORT).show();
        }catch(Exception e) {
            Toast.makeText(this, "Exception raised", Toast.LENGTH_SHORT).show();
            
        }
        tv = (TextView) findViewById(R.id.tv);
        tv.setText(word);
    
    }

}

Note - Dont forget to declare the activity in AndroidManifest.xml

<activity android:name="com.example.passing_value.Second_Activity" /> 

Now we are done. Post your questions in the comment. I will be happy to answer those.

For more info visit on facebook https://www.facebook.com/androidcoolstuffs

Thank you