[webview_flutter] Catch and handle all HTTP errors codes (eg 404) to redirect to a custom error page

Use case

it is currently impossible to capture and manage HTTP status codes and avoid displaying the default page of the missing internet connection.

Proposal

I suggest to create a new property such as "onPageError" to allow an easy iterception of these status codes

it is very important

Do we have any updates on this?

Is there any update on this ?

This is very very important feauture!

@majicomajico

Hey @majicomajico,

Based on your proposal for an onPageError property, it seems you're looking for a way to intercept HTTP status error codes. Considering the functionality of onWebResourceError, it appears that this property might already serve the purpose you're intending with onPageError.

The onWebResourceError property in the webview_flutter plugin provides a mechanism to handle web resource loading errors. When a web resource fails to load, it triggers this event with a WebResourceError object. This object includes details about the error, such as its description, raw code, and type, which can be used to understand and handle the error effectively. It also indicates whether the error originated from the main frame. It is particularly useful when you want to handle and recover from specific types of web resource errors, or when you need to communicate loading issues to the users.

Could you confirm if this meets your requirements? If not, could you please provide more details about the specific functionality you're seeking with onPageError?

This is a much need feature!!!!!

The onWebResourceError property in the webview_flutter plugin does not catch 404 errors. Thus it seems that the need for an onPageError property is very relevant. Please consider implement the suggested feature in the near future, to the benefit of all that have chosen to utilize this otherwise fine plugin.

I have one solution to this problem.
We could use http.get to check the status code like this:

import 'package:http/http.dart' as http;
// ...
onWebResourceError: (WebResourceError error) async {
  final response = await http.get(Uri.parse('https://something.com'));
  print(response.statusCode);
}

Of course, I also want to use a new property like onPageError, but currently, we could solve it with this solution.

[webview_flutter_android][webview_flutter_wkwebview] Adds platform im…

[webview_flutter] Adds onHttpError callback to NavigationDelegate to …

This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of flutter doctor -v and a minimal reproduction of the issue.

[webview_flutter] Adds onHttpError callback to NavigationDelegate to …

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[webview_flutter] Catch and handle all HTTP errors codes (eg 404) to redirect to a custom error page #39502

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[webview_flutter] Catch and handle all HTTP errors codes (eg 404) to redirect to a custom error page #39502

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paulobreim commented on Mar 23, 2020

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