Does Android Consider the Exit Status Code from System.exit()?

Does Android consider the exit status code passed to System.exit(...)?

In Android development, the exit status code provided to the System.exit() method is generally disregarded, and it does not serve its conventional purpose as in standard Java applications. This means that using System.exit() in Android does not influence the behavior of the application in the same way as on desktop environments.

// Incorrect usage of System.exit() in an Android app
public void onClickExit(View view) {
    // This might not behave as expected in Android
    System.exit(0);
}

Causes

• System.exit() is not intended to be used in Android applications since Android is designed to manage app lifecycles and resources automatically.
• The Android runtime does not exit the application in a way that would allow the exit status code to be used meaningfully.

Solutions

• To properly end an Android app, consider using methods such as finishing an activity or moving your application to the background.
• Implement the appropriate lifecycle management practices to allow the Android system to handle application termination gracefully.

Mistake: Using System.exit() in an Android application.

Solution: Instead of using System.exit(), use Activity.finish() or Intent to navigate away from the application.

Mistake: Assuming that exit status codes are relevant for Android apps.

Solution: Understand that Android handles application lifecycles internally, and you should rely on Android's designed mechanisms for app lifecycle management.