What methods exist to prevent the process from being terminated by the system on its own initiative?

In Android, the system may terminate an application process to free resources, especially when memory is low. To minimize the likelihood of the system terminating the process, the following methods can be used:

• Foreground Service: launching a service with a notification that informs the system that the app is active and important. Such services have a higher priority and are less likely to be killed.

• Using startForeground(): moving the service to the foreground, which increases the process priority.

• Memory usage optimization: reducing memory consumption so that the system does not consider the process as a candidate for termination.

• Lifecycle management: saving state and restoring it correctly so that the user experience is not affected in case of termination.

• Using WorkManager for background tasks: it considers system constraints and performs tasks more reliably.

Example of starting a foreground service:

val notification = NotificationCompat.Builder(this, CHANNEL_ID)
    .setContentTitle("Service is running")
    .setContentText("Application is active")
    .setSmallIcon(R.drawable.ic_service)
    .build()

startForeground(1, notification)

However, it is impossible to completely prevent the system from terminating the process, as this is part of the OS resource management.