pop method

Future<void> pop ()

Instructs the system navigator to remove this activity from the stack and return to the previous activity.

On iOS, calls to this method are ignored because Apple's human interface guidelines state that applications should not exit themselves.

This method should be preferred over calling dart:io's exit method, as the latter may cause the underlying platform to act as if the application had crashed.

Implementation 

static Future<void> pop() async {
  await SystemChannels.platform.invokeMethod('SystemNavigator.pop');
}