pass data from one activity to another activity in android

Today we are going to discuss about switching from one activity to another activity and pass data from one activity to another activity and get data in second activity by using intents  in android

Intent: 

1)This is one of Android Component.
2)Intents provide Communication between Activities

Create a Project:

create an android project in Eclipse

1) Layout files

Create a two layout files in res/layout folder

first.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" >

    <EditText
        android:id="@+id/editText1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:ems="10" >

        <requestFocus />
    </EditText>

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/editText1"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="15dp"
        android:text="send" />


</RelativeLayout>

second.xml

<?xml version="1.0" encoding="utf-8"?>
<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/datadisplay"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text=""
        android:textSize="25sp"
        android:layout_centerInParent="true"/>

</RelativeLayout>

2) Java files

Create two java files


MainActivity.java



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

public class MainActivity extends Activity {
EditText getedit;
Button sendbtn;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.first);
getedit=(EditText)findViewById(R.id.editText1);
sendbtn=(Button)findViewById(R.id.button1);
sendbtn.setOnClickListener(new View.OnClickListener() {

public void onClick(View v) {
// TODO Auto-generated method stub
String getdata=getedit.getText().toString();

Intent intent=new Intent(getApplicationContext(),SecondActivity.class);
intent.putExtra("senddata", getdata);
startActivity(intent);
}
});

}


}

SecondActivity.java


import android.app.Activity;
import android.os.Bundle;
import android.text.Html;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

public class SecondActivity extends Activity {
TextView displaydata;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.second);
displaydata=(TextView)findViewById(R.id.datadisplay);

Bundle extras = getIntent().getExtras();
String  ddata=extras.getString("senddata");
displaydata.setText(Html.fromHtml("<b>Data from first Activity</b>  "+ddata));
}
}

3) AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.forblog1"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="21" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
            android:name="com.example.forblog1.SecondActivity"></activity>
    </application>

</manifest>

* Switching from one activity to another activity

add the below code where you want navigation between activities

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


4)Demo

Finally,Run your application

OUTPUT:

Result of this application as like below
 enter any data  if you  want in edittext like android then click on enter

data will be display in second activity like as shown below