Uri fileUri = Uri.parse("content://be.domain.whatever/EULA.html");
Intent browserIntent = new Intent(Intent.ACTION_VIEW);
browserIntent.setDataAndType(fileUri, "text/html");
browserIntent.addCategory(Intent.CATEGORY_BROWSABLE);
browserIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
try {
         startActivity(browserIntent);
} catch (ActivityNotFoundException e) {
      e.printStackTrace();
}

public class AssetProvider extends ContentProvider {

    @Override
    public boolean onCreate() {
        return false;
    }

    @Override
    public AssetFileDescriptor openAssetFile(Uri uri, String mode) throws FileNotFoundException {
        AssetManager am = getContext().getAssets();
        String file_name = uri.getPath().substring(1, uri.getPath().length());
        if (file_name == null)
            throw new FileNotFoundException();
        AssetFileDescriptor afd = null;
        try {
            afd = am.openFd(file_name);
        } catch (IOException e) {
            e.printStackTrace();
        }
        return afd;
    }
    ...
   }

<provider
        android:name=".app.core.misc.AssetProvider"
        android:authorities="be.domain.whatever"
        android:exported="true"
        android:grantUriPermissions="true"/>