'This site cant be reached' error when my app hits callback URL after login

nicki.stull · March 18, 2024, 9:08pm

On my React Native Android app. Getting this error when auth0 tries to hit the callback URL to navigate back to my app after a successful login. I’ve verified the url is in the list of allowed callback URLs. This isn’t replicatable on the RN iOS side, and the login there functions fine. I’m updated to 3.0 and have gone through the update guide. Been reading lots of other threads and i’m all but out of ideas.

nicki.stull · March 19, 2024, 8:45pm

OK, found a solution to this! Turns out there were a few issues in how i was defining the RedirectActivity in the AndroidManifest file. To anyone else experiencing this, make sure you know which file is being used, and then follow guidance from the FAQ page about what variables need to be set.

github.com

auth0/react-native-auth0/blob/master/FAQ.md#1-how-can-i-have-separate-auth0-domains-for-each-environment-on-android

# Frequently Asked Questions

1. [How can I have separate Auth0 domains for each environment on Android?](#1-how-can-i-have-separate-auth0-domains-for-each-environment-on-android)
2. [How can I disable the iOS _login_ alert box?](#2-how-can-i-disable-the-ios-login-alert-box)
3. [How can I disable the iOS _logout_ alert box?](#3-how-can-i-disable-the-ios-logout-alert-box)
4. [Is there a way to disable the iOS _login_ alert box without `ephemeralSession`?](#4-is-there-a-way-to-disable-the-ios-login-alert-box-without-ephemeralsession)
5. [How can I change the message in the iOS alert box?](#5-how-can-i-change-the-message-in-the-ios-alert-box)
6. [How can I programmatically close the iOS alert box?](#6-how-can-i-programmatically-close-the-ios-alert-box)

## 1. How can I have separate Auth0 domains for each environment on Android?

This library internally declares a `RedirectActivity` along with an **intent-filter** in its Android Manifest file to handle the Web Auth callback and logout URLs. While this approach prevents the developer from adding an activity declaration to their apps's Android Manifest file, it requires the use of [Manifest Placeholders](https://developer.android.com/studio/build/manage-manifests#inject_build_variables_into_the_manifest).

Alternatively, you can re-declare the `RedirectActivity` in the `AndroidManifest.xml` file with your own **intent-filter** so it overrides the library's default one. If you do this then the `manifestPlaceholders` don't need to be set as long as the activity contains `tools:node="replace"` like in the snippet below.

```xml
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    package="your.app.package">
    <application android:theme="@style/AppTheme">

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tyf · March 19, 2024, 9:28pm

Awesome, goo to know you were able to get this sorted and thanks for sharing here

system · April 8, 2024, 5:35pm

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