Change Chromecast casting icon color

Question

I'm using Google's method to add a Cast button to my app, but it's defaulted to the white icon, which is invisible against my white menu bar. How do I go about changing the color of the Cast icon to black?

Answer 1

I've just extended MediaRouteActionProvider like this:

    public class ThemeableMediaRouteActionProvider extends MediaRouteActionProvider {
    public ThemeableMediaRouteActionProvider(Context context) {
        super(context);
    }

    @Override
    public MediaRouteButton onCreateMediaRouteButton() {
        MediaRouteButton button = super.onCreateMediaRouteButton();
        colorWorkaroundForCastIcon(button);
        return button;
    }

    @Nullable
    @Override
    public MediaRouteButton getMediaRouteButton() {
        MediaRouteButton button = super.getMediaRouteButton();
        colorWorkaroundForCastIcon(button);
        return button;
    }

    private void colorWorkaroundForCastIcon(MediaRouteButton button) {
        if (button == null) return;
        Context castContext = new ContextThemeWrapper(getContext(), androidx.mediarouter.R.style.Theme_MediaRouter);

        TypedArray a = castContext.obtainStyledAttributes(null, androidx.mediarouter.R.styleable.MediaRouteButton, androidx.mediarouter.R.attr.mediaRouteButtonStyle, 0);
        Drawable drawable = a.getDrawable(androidx.mediarouter.R.styleable.MediaRouteButton_externalRouteEnabledDrawable);
        a.recycle();
        DrawableCompat.setTint(drawable, getContext().getResources().getColor(R.color.primary));
        drawable.setState(button.getDrawableState());
        button.setRemoteIndicatorDrawable(drawable);
    }
}

R.color.primary is what color i wanted.

then just replace actionProviderClass in menu from MediaRouteActionProvider to your like that:

<item
    android:id="@+id/media_route_menu_item"
    android:title="@string/media_route_menu_title"
    bwq:actionProviderClass="tv.test.playback.chromecast.ThemeableMediaRouteActionProvider"
    bwq:showAsAction="always">
</item>