Application Process

Android Application Process and Application Class

1. What Is an Application Process?

When we open an Android app, Android creates a separate working space for that app.

This working space is called an application process.

The process contains:

• Activities
• Services
• Application object
• ViewModels
• Threads
• App memory
• Variables and objects

flowchart TD
    A["User opens app"] --> B["Android creates app process"]
    B --> C["Application class object is created"]
    C --> D["Application.onCreate() runs"]
    D --> E["Activity is created"]

Android creates the process only when the app needs to run.

For example:

• User opens the app.
• Notification is clicked.
• Service starts.
• BroadcastReceiver receives an event.
• WorkManager starts some work.

2. Simple Process Creation Flow

If the process already exists, Android does not create it again.