Question

I have read about application object in android site but I couldn’t understand.

What is application object android?
What is the use of application object
When we should use application object

Please explain with example.

Thank you.

Answer 1

Application object is an object whose lifecycle is same as our Application.

When Application starts this object is created automatically by Android Framework.

When you want to share data between more than one activities of your application or you want to retain something at application level.In that scenario you can use Application object as a global store for your application.

Example::

// this is your Application Object Class
public class MyApplication extends Application{
}

In your manifest mention it as follows::

<application android:name="yourpkgname.MyApplication"/>

To access application object in any of the activities.Use the following code.

MyApplication app = (MyApplication) getApplication();

I think this is quite enough for you to grab the concept of application object.