In Flutter how to programmatically trigger on back pressed so it goes through PopScope

In Flutter, to programmatically trigger the behavior of the back button (e.g. Android’s system back) and go through a PopScope, you can use the Navigator.pop(context) method in combination with how PopScope (formerly WillPopScope) handles the back navigation.

✅ Solution

To simulate a back press and ensure it goes through PopScope’s onPopInvoked:

PopScope(
  canPop: true, // or false if you want to manually decide
  onPopInvoked: (didPop) {
    // handle what happens when a pop is triggered
    if (didPop) {
      print("Popped via back button or Navigator.pop");
    } else {
      print("Pop attempt denied");
    }
  },
  child: Scaffold(
    appBar: AppBar(
      title: Text('Demo'),
    ),
    body: Center(
      child: ElevatedButton(
        onPressed: () {
          // This will trigger the PopScope logic
          Navigator.of(context).maybePop();
        },
        child: Text('Simulate Back Press'),
      ),
    ),
  ),
)

✅ Why use maybePop() instead of pop()?

• Navigator.pop(context) always pops the current route.
• Navigator.maybePop(context) checks with any PopScope (or WillPopScope) and only pops if allowed.
• maybePop() will trigger the logic inside your onPopInvoked.

---

✅ Summary

• Use Navigator.maybePop(context) to simulate a back press.
• Wrap your screen in a PopScope and use onPopInvoked to catch and handle the event.
• Set canPop: true or false to control behavior dynamically.