react-native-keycloak | React Native components for Keycloak | Identity Management library

You have to link react-native-inappbrowser-reborn. For more information about how to link it go to Official repo on github.
To navigate back from webview to you app, you have to configure deep linking.
To configure the external linking in Android, you can create a new intent in the manifest. The easiest way to do this is with the uri-scheme package: npx uri-scheme add myapp --android.
Set launchMode of MainActivity to singleTask in order to receive intent on existing MainActivity (this is the default on all new projects, so you may not need to actually change anything!). It is useful if you want to perform navigation using deep link you have been registered - details
Add the new intent-filter inside the MainActivity entry with a VIEW type action:
Create a keycloak.ts file in the src folder of your project (where App.ts is located) with the following content.
Wrap your App inside KeycloakProvider and pass the keycloak instance as prop. N.B. If your using other providers (such as react-redux) it is recommended to place them inside ReactNativeKeycloakProvider.
initConfig, contains the object to be passed to keycloak.init() method, by default the following is used { onLoad: 'check-sso', } for more options see Keycloak docs.
LoadingComponent, a component to be displayed while keycloak is being initialized, if not provided child components will be rendered immediately. Defaults to null
isLoadingCheck, an optional loading check function to customize LoadingComponent display condition. Return true to display LoadingComponent, false to hide it. Can be implemented as follow (keycloak) => !keycloak.authenticated;
onEvent, an handler function that receives events launched by keycloak, defaults to null. It can be implemented as follow (event, error) => { console.log('onKeycloakEvent', event, error); }; Published events are: onReady onInitError onAuthSuccess onAuthError onAuthRefreshSuccess onAuthRefreshError onTokenExpired onAuthLogout
onTokens, an handler function that receives keycloak tokens as an object every time they change, defaults to null. Keycloak tokens are returned as follow { "idToken": string, "refreshToken": string, "token": string }