isSystemUser meaning in UserManager android

In the Android context, `isSystemUser()` is a method commonly found in the `UserManager` class. This method is used to determine if the current user running the app is a system user (also known as a device owner or管理员) or a regular user. A system user typically has elevated privileges and can perform tasks that regular users cannot.

The `UserManager` class allows you to manage various aspects related to users on an Android device, such as checking permissions, creating, updating, or deleting users. The `isSystemUser()` method would return `true` if the calling component belongs to the same user ID as the system, or `false` otherwise.

Here's an example of how you might use it:

UserManager userManager = (UserManager) getSystemService(Context.USER_SERVICE);
boolean isSystemUser = userManager.isSystemUser();