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