Sending Data from One Activity to Other in Android

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Hi friends
In this post we will learn how to send data(integer,long,string etc) from one activity to other.

Note: I hope you  are familiar with using Buttons and EditTexts if not then go through this post  Using Button and EditText in Android.

Some times while working with android we need to send some data from one Activity to other.
Here we will create a project which will have two activities "FirstActivity" and "Second Activity".
We send Name and Phone Number from  FirstActivity to Second Activity and display the sent data.

Create a new project.

Donot forget to add SecondActivity in manifest.

Editing main.xml file

Edit your main.xml file add two  textviews, two edittexts, and  a button.
It should look like (you can just copy the following xml code and paste in main.xml file)

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:orientation="vertical">

    <TextView 
        android:text="Name"
        android:layout_height="wrap_content"
        android:layout_width="fill_parent"/>
    
      <EditText 
        android:id="@+id/name"
        android:layout_height="wrap_content"
        android:layout_width="fill_parent"/>
      <TextView 
        android:text="Phone Number"
        android:layout_height="wrap_content"
        android:layout_width="fill_parent"/>
      <EditText 
        android:id="@+id/phone"
        android:layout_height="wrap_content"
        android:layout_width="fill_parent"/>
      <Button 
        android:id="@+id/button"
        android:text="OK"
        android:layout_height="wrap_content"
        android:layout_width="fill_parent"/>

</LinearLayout>

Now open the FirstActivity class and write following

 FirstActivity.java

public class FirstActivity extends Activity 

{

     @Override

     public void onCreate(Bundle savedInstanceState)

     {

     super.onCreate(savedInstanceState);

     setContentView(R.layout.main);

     Button button=(Button)findViewById(R.id.button);

     final EditText editTextName=(EditText)findViewById(R.id.name);

     final EditText editTExtPhone=(EditText)findViewById(R.id.phone);

    

    

     // add button onClick Listener

     button.setOnClickListener(new View.OnClickListener() {

public void onClick(View v) {

// TODO Auto-generated method stub

String name=editTextName.getText().toString();

long phone=Long.parseLong(editTExtPhone.getText().toString());

// create a new intent

Intent intent =new Intent(getApplicationContext(),SecondActivity.class);

// put the name and phone(to be sent to other activity) in intent

intent.putExtra("PERSON_NAME", name);

intent.putExtra("PHONENUMBER", phone);

// start the second activity

startActivity(intent);

}

});

     }

    

}

Edit your SecondActivity class

Point to Note(To Rememeber)

intent.putExtra("PERSON_NAME", name);

we have put the name in intent with "PERSON_NAME" tag, we will fetch name in second activity with same tag(see second activity).  similarly we can send and fetch any type of data.

SecondActivity.java (Do not forget to declare this activity in manifest file)

public class SecondActivity extends Activity 

{

@Override

public void onCreate(Bundle savedInstanceState)

{

super.onCreate(savedInstanceState);

// extract the name and phone from intent

String name=getIntent().getStringExtra("PERSON_NAME");

long phoneNumber=getIntent().getLongExtra("PHONENUMBER", 0);

TextView tv=new TextView(this);

tv.setTextSize(20);

String str="NAME : "+name+"\nPhone Number : "+phoneNumber;

tv.setText(str);

setContentView(tv);

}

}

Now run the application, you will see the following