I am integrating Facebook authenticating in .net Maui app through WebAuthenticator for IOS it's work fine but when i am trying the same code for Android it take me to facebook authentication page where i can enter my Facebook email and password after that when i click on login then from Facebook page it open a blank screen with navigation bar where my app name written on this screen if i use android back button functionality then it take me back to Facebook page if i again click back button then it take me back to my app login screen.
[IntentFilter(new[] { Intent.ActionView },
Categories = new[] { Intent.CategoryDefault, Intent.CategoryBrowsable },
DataScheme = CALLBACK_SCHEME)]
public class WebAuthenticationCallbackActivity : Microsoft.Maui.Authentication.WebAuthenticatorCallbackActivity
{
const string CALLBACK_SCHEME = "com.myapp.r1";
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
}
public override void OnCreate(Bundle savedInstanceState, PersistableBundle persistentState)
{
base.OnCreate(savedInstanceState, persistentState);
}
protected override void OnActivityResult(int requestCode, [GeneratedEnum] Result resultCode, Intent data)
{
base.OnActivityResult(requestCode, resultCode, data);
}
}```
**ManifestFile**
<queries>
<intent>
<action android:name="android.support.customtabs.action.CustomTabsService" />
</intent>
</queries>
var response = await Microsoft.Maui.Authentication.WebAuthenticator.AuthenticateAsync(new WebAuthenticatorOptions()
{
Url = new Uri("https://www.facebook.com/v12.0/dialog/oauth?client_id={clientId}&redirect_uri=fbconnect://cct.com.myapp.r1&response_type=token&scope={scope}"),
CallbackUrl = new Uri("fbconnect://cct.com.myapp.r1"),
PrefersEphemeralWebBrowserSession = true
});
string accessToken = response?.AccessToken;