Access token can be omit on iOS SDK and JS SDK, but it is required on Android SDK

[bahung1221]

Hi,

I'm using react-native-mapbox-gl/maps (which depend on mapbox/mapbox-gl-native-android) to render my map without use any tiles or styles from Mapbox service. All tiles, styles, fonts were self-hosted on my server.
So I didn't have any Mapbox access token, it worked very well on iOS and browser, but doesn't work on android.

I found a PR from mapbox/mapbox-gl-native repo that was merged in 2018, it seems that PR allowed us to omit the access token. But it seems that mapbox/mapbox-gl-native-android doesn't allow it.

mapbox-gl-native-android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/MapView.java

Lines 133 to 135 in a470e39

	if (!Mapbox.hasInstance()) {
	throw new MapboxConfigurationException();
	}

I think if Mapbox GL is open source and also the iOS & JS version was allowed omit the access token, the Android version should allow developers to omit it, too.

Thank you so much!

[bahung1221]

Found it out, I can set token as an empty string and it worked now,
It will be awesome if documentation has a note for it.

Thank you for your work hard!