What processes are carried out by the Android system when launching an application?

When launching an application in Android, several key processes occur:

1. Application process startup — the system creates a new Linux process for the application if it is not already running.
2. Zygote startup — the Zygote process, which serves as a template for all applications, is forked to create a new application process, speeding up startup.
3. Application initialization — an instance of the Application class is created, and the onCreate() method is called.
4. Activity startup — the system creates and starts the main Activity, calling its lifecycle methods (onCreate(), onStart(), onResume()).
5. Loading resources and components — necessary resources, services, and components of the application are loaded.

Thus, Android manages startup through processes, Zygote forking, application initialization, and the Activity lifecycle to display the user interface.