Sending Information in Android

Introduction

In this article, I will explain how to send some comments or messages to another activity in Android. In this article, I want to send my message to another activity that is a login activity of another company. To understand how to do that see the following instructions.

Step 1

Create a new Android project as "File" ->"New" -> "Android Application Project" as shown in the following image:

Step 2

Now open the XML file as "res/layout/activity_main.xml" and update it with the following code:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Name : "/>
<EditText android:id="@+id/name"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="10dip"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Email : "
/>
<EditText android:id="@+id/email"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="10dip"/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Mobile :" />
<EditText
android:id="@+id/mobile"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10"
android:maxLength="10"
android:inputType="phone" >
<requestFocus />
</EditText>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Comment :" />
<EditText
android:id="@+id/comment"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10" />
<Button
android:id="@+id/btnNextScreen"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="15dip"
android:text="Connect to Next" />
</LinearLayout>

Step 3

Open the Java file as "MainActivity.java" and update it with the following code:

package com.example.activityswitching;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
public class MainActivity extends Activity {
EditText inputName, inputMobile;
EditText inputEmail,inputComment;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
inputName = (EditText) findViewById(R.id.name);
inputEmail = (EditText) findViewById(R.id.email);
inputMobile = (EditText) findViewById(R.id.mobile);
inputComment = (EditText) findViewById(R.id.comment);
Button btnNextScreen = (Button) findViewById(R.id.btnNextScreen);
//Listening to button event
btnNextScreen.setOnClickListener(new View.OnClickListener() {
public void onClick(View arg0) {
//Starting a new Intent
Intent nextScreen = new Intent(getApplicationContext(), SecondActivity.class);
//Sending data to another Activity
nextScreen.putExtra("name", inputName.getText().toString());
nextScreen.putExtra("email", inputEmail.getText().toString());
nextScreen.putExtra("mobile", inputMobile.getText().toString());
nextScreen.putExtra("comment", inputComment.getText().toString());
Log.e("n", inputName.getText()+"."+ inputEmail.getText()+"."+inputMobile.getText()+"."+inputComment.getText());
startActivity(nextScreen);
}
});
}
}

Step 4

Now create a new XML file in "res/layout/second_activity.xml" and update it with the following code:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="You Entered..."
android:textSize="25dip"
android:gravity="center"
android:layout_margin="15dip"/>
<TextView android:id="@+id/txtName"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_margin="15dip"
android:textSize="18dip"/>
<TextView android:id="@+id/txtEmail"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_margin="15dip"
android:textSize="18dip"/>
<TextView
android:id="@+id/txtmobile"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="15dip"
/>
<TextView
android:id="@+id/txtcomment"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="15dip"
/>
<Button android:id="@+id/btnClose"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="15dip"
android:text="Close"/>
</LinearLayout>

Step 5

Create a new Java file as "src/com.example.activityswitching/SecondActivity.java" and update it with the following code:

package com.example.activityswitching;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
public class SecondActivity extends Activity {
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_second);
TextView txtName = (TextView) findViewById(R.id.txtName);
TextView txtEmail = (TextView) findViewById(R.id.txtEmail);
TextView txtmobile = (TextView) findViewById(R.id.txtmobile);
TextView txtcomment = (TextView) findViewById(R.id.txtcomment);
Button btnClose = (Button) findViewById(R.id.btnClose);
Intent i = getIntent();
// Receiving the Data
String name = i.getStringExtra("name");
String email = i.getStringExtra("email");
String mobile = i.getStringExtra("mobile");
String comment = i.getStringExtra("comment");
//Log.e("Second Screen", name + "." + email);
// Displaying Received data
txtName.setText(name);
txtEmail.setText(email);
txtmobile.setText(mobile);
txtcomment.setText(comment);
// Binding Click event to Button
btnClose.setOnClickListener(new View.OnClickListener() {
public void onClick(View arg0) {
//Closing SecondScreen Activity
finish();
}
});
}
}

Step 6

The output is as shown in the following image:

Input

Output