iOS UINavigationBar transparency in NativeScript

ios-uinavigationbar-transparency.js

private initNavBarTransparency() {
    if (topmost().ios) {
        let navigationBar = topmost().ios.controller.navigationBar as UINavigationBar;
        navigationBar.translucent = true;
        navigationBar.setBackgroundImageForBarMetrics(UIImage.new(), UIBarMetrics.Default);
        navigationBar.shadowImage = UIImage.new();
        navigationBar.backgroundColor = UIColor.colorWithRedGreenBlueAlpha(0, 0, 0, 0.5);
    }
}