What can cause an Activity to finish in Android?

An Activity in Android can be finished for several reasons:

• The user explicitly closes the Activity (presses the "Back" button).
• The system destroys the Activity to free resources (for example, when memory is low).
• The finish() method is called in the application code.
• The device configuration changes (screen rotation), leading to the recreation of the Activity.
• The application process is terminated by the system.

When an Activity is finished, lifecycle methods such as onPause(), onStop(), and onDestroy() are called.