passing data between activities

lets see how to pass data between two activities of android application

 let see how our sample application does

 say you have first activity you enter  your name and hit button and your name will be passed to
secound activity and it will be shown there

your firstactivity code is this

package com.passingdata;

import android.app.Activity;

import android.content.Intent;

import android.os.Bundle;

import android.text.Editable;

import android.view.LayoutInflater;

import android.view.Menu;

import android.view.MenuItem;

import android.view.View;

import android.view.View.OnClickListener;

import android.view.ViewGroup;

import android.widget.Button;

import android.widget.EditText;

import android.os.Build;

public class MainActivity extends Activity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.fragment_main);

final EditText ed=(EditText)findViewById(R.id.editText1);

Button b1= (Button)findViewById(R.id.button1);

b1.setOnClickListener(new OnClickListener(){

@Override

public void onClick(View arg0) {

// TODO Auto-generated method stub

Editable temp=ed.getText();

Intent in=new Intent(MainActivity.this,second.class);

in.putExtra("name", temp.toString());

startActivity(in);

}

});

}}

and your xml of activity that is fragment_main

<RelativeLayout 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"

   >

    <TextView

        android:id="@+id/textView1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignParentLeft="true"

        android:layout_alignParentTop="true"

        android:layout_marginLeft="90dp"

        android:layout_marginTop="34dp"

        android:text="FIRST ACTIVITY" />

    <Button

        android:id="@+id/button1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_below="@+id/textView1"

        android:layout_centerHorizontal="true"

        android:layout_marginTop="170dp"

        android:text="Press me" />

    <EditText

        android:id="@+id/editText1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignBottom="@+id/button1"

        android:layout_centerHorizontal="true"

        android:layout_marginBottom="69dp"

        android:ems="10"

        android:inputType="textPersonName" >

        <requestFocus />

    </EditText>

    <TextView

        android:id="@+id/textView2"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_below="@+id/textView1"

        android:layout_centerHorizontal="true"

        android:layout_marginTop="46dp"

        android:text="enter your name and press button to send to next activity" />

</RelativeLayout>

second activity

 <RelativeLayout 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"

   >

    <TextView

        android:id="@+id/textView1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignParentLeft="true"

        android:layout_alignParentTop="true"

        android:layout_marginLeft="90dp"

        android:layout_marginTop="34dp"

        android:text="FIRST ACTIVITY" />

    <Button

        android:id="@+id/button1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_below="@+id/textView1"

        android:layout_centerHorizontal="true"

        android:layout_marginTop="170dp"

        android:text="Press me" />

    <EditText

        android:id="@+id/editText1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignBottom="@+id/button1"

        android:layout_centerHorizontal="true"

        android:layout_marginBottom="69dp"

        android:ems="10"

        android:inputType="textPersonName" >

        <requestFocus />

    </EditText>

    <TextView

        android:id="@+id/textView2"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_below="@+id/textView1"

        android:layout_centerHorizontal="true"

        android:layout_marginTop="46dp"

        android:text="enter your name and press button to send to next activity" />

</RelativeLayout>

second activity xml

<RelativeLayout 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="com.passingdata.MainActivity$PlaceholderFragment" >

    <TextView

        android:id="@+id/textView1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignParentLeft="true"

        android:layout_alignParentTop="true"

        android:layout_marginLeft="90dp"

        android:layout_marginTop="34dp"

        android:text="SECOND ACTIVITY" />

    <TextView

        android:id="@+id/textView6"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_below="@+id/textView1"

        android:layout_centerHorizontal="true"

        android:layout_marginTop="46dp"

        android:text="YOUR NAME IS" />

    <TextView

        android:id="@+id/textView3"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignRight="@+id/textView1"

        android:layout_below="@+id/textView2"

        android:layout_marginTop="61dp"

        android:text=""

        android:textAppearance="?android:attr/textAppearanceLarge" />

</RelativeLayout>

its simple you read your data in your first activity using get text method from edittext widget

and pass on to secound activity using intent  

 Intent in=new Intent(MainActivity.this,second.class);

in.putExtra("name", temp.toString());

startActivity(in);

read it in second activity and put it in text view by settext method

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

TextView tv=(TextView)findViewById(R.id.textView6);

tv.setText("your name:"+name);

the entaire source code is available here

http://www.mohammediatechnologies.in/androidsource/passingdata.zip