- Data Structure
- Networking
- RDBMS
- Operating System
- Java
- MS Excel
- iOS
- HTML
- CSS
- Android
- Python
- C Programming
- C++
- C#
- MongoDB
- MySQL
- Javascript
- PHP
- Physics
- Chemistry
- Biology
- Mathematics
- English
- Economics
- Psychology
- Social Studies
- Fashion Studies
- Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
How to send an object one Android activity to another using Intents?
This example demonstrates how do I send an object from one android activity to another using intents.
Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.
Step 2 − Add the following code to res/layout/activity_main.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" tools:context=".MainActivity"> <EditText android:id="@+id/editText" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_centerInParent="true" android:hint="Enter your Message" /> <Button android:id="@+id/btnSendObj" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Send Obj to 2nd Activity" android:layout_centerInParent="true" android:layout_below="@id/editText" android:layout_marginTop="15dp"/> </RelativeLayout>
Step 3 – Create an object from a java class (Message.java)
import java.io.Serializable; public class Message implements Serializable { private static final long serialVersionUID = 1L; private String message; public String getMessage(){ return message; } public void setMessage(String message){ this.message = message; } @Override public String toString(){ return "Message [message = " + message+"]"; } }
Step 4 − Add the following code to src/MainActivity.java
import android.content.Intent; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.EditText; public class MainActivity extends AppCompatActivity { EditText editText; Button button; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); editText = findViewById(R.id.editText); button = findViewById(R.id.btnSendObj); button.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Intent intent = new Intent(MainActivity.this, SecondActivity.class); Message message = new Message(); message.setMessage(editText.getText().toString()); intent.putExtra("message", message); startActivity(intent); } }); } }
Step 5 – Create a new Activity and add the following code,
SecondActivity.java −
import android.content.Intent; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.widget.TextView; public class SecondActivity extends AppCompatActivity { TextView textView; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_second); textView = findViewById(R.id.textView); Intent intent = getIntent(); Message message = (Message) intent.getSerializableExtra("message"); textView.setText(message.toString()); } }
activity_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" tools:context=".SecondActivity"> <TextView android:id="@+id/textView" android:textSize="16sp" android:textStyle="bold|italic" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerInParent="true"/> </RelativeLayout>
Step 6 – Add the following code to androidManifest.xml
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="app.com.sample"> <application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:roundIcon="@mipmap/ic_launcher_round" android:supportsRtl="true" android:theme="@style/AppTheme"> <activity android:name=".SecondActivity"></activity> <activity android:name=".MainActivity"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> </manifest>
Let's try to run your application. I assume you have connected your actual Android Mobile device with your computer. To run the app from android studio, open one of your project's activity files and click Run icon from the toolbar. Select your mobile device as an option and then check your mobile device which will display your default screen –
Click here to download the project code.