Firebase Flutter, unable to catch Exception

Question

I'm trying to get my head around this problem. Problem is no matter what I do, I'm unable to catch the exception for my application. The program instead of printing the error just gets stuck (due to uncaught exception).

This is my simple code. Can someone please help me in solving this problem?

Future<void> onRegisterPress(
    BuildContext context,
    TextEditingController fName,
    TextEditingController lName,
    TextEditingController email,
    TextEditingController password) async {
  if (isValid(fName.text, lName.text, email.text, password.text)) {
    //TODO: Exception not caught
    try {
      var userCredential = await FirebaseAuth.instance
          .createUserWithEmailAndPassword(
              email: email.text, password: password.text);
    } on PlatformException catch (e) {
      print('Failed with error code: ${e.code}');
      print(e.message);
      Navigator.push(
          context,
          MaterialPageRoute(
              builder: (context) => MyHomePage(headline: 'Exception Caught!')));
    }

    Navigator.push(
        context, MaterialPageRoute(builder: (context) => MyLoginPage()));
  }
}

Update 1:

User user = FirebaseAuth.instance.currentUser;
    try {
      await FirebaseAuth.instance.createUserWithEmailAndPassword(
          email: email.text, password: password.text);
    } on FirebaseAuthException catch (e) {
      print('Failed with error code: ${e.code}');
      print(e.message);
      Navigator.push(
          context,
          MaterialPageRoute(
              builder: (context) => MyHomePage(headline: 'Exception Caught!')));
    }

Updating the code using FirebaseAuthException, has no effect unfortunately.

Error is: Error Screenshot

mfkw1 · Accepted Answer · 2021-01-19 17:56:37Z

1

Why do you want to catch PlatformException? Documentation for this method mentions FirebaseAuthException, try to catch that:

try {
  await FirebaseAuth.instance.createUserWithEmailAndPassword(...)
} on FirebaseAuthException catch(e) {
  ...
}

answered Jan 19, 2021 at 17:56

mfkw1

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3 Comments

user4282023 Over a year ago

I made the requested changes but the error persists. Kindly have a look at update 1 I posted. Thanks.

mfkw1 Over a year ago

it's a thrown exception, not an error. do you see any error in logs?

user4282023 Over a year ago

Oh. There is no error in the logs but I want to print the message "Exception Caught!" which is not displaying in the logs either. After throwing this exception my program became stuck. How can I prevent it from freezing?

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