[TIMOB-20176] iOS: Support UIVisualEffectView (aka Blur View)

var win = Ti.UI.createWindow({
    backgroundColor: "#fff"
});

/*
 *	Reference Image
 */
var img = Ti.UI.createImageView({
    image: "/default_app_logo.png",
    top: 100,
    width: 300,
    height: 300
});

/*
 *	Blur View
 */
var blur = Ti.UI.iOS.createBlurView({
    width: Ti.UI.FILL,
    height: Ti.UI.FILL
});

img.add(blur);

/*
 *	Effect Controls
 */
var tabs = Ti.UI.iOS.createTabbedBar({
    labels: ["Extra light", "Light", "Dark"],
    bottom: 100
});

var effects = [
    Ti.UI.iOS.BLUR_EFFECT_STYLE_EXTRA_LIGHT,
    Ti.UI.iOS.BLUR_EFFECT_STYLE_LIGHT,
    Ti.UI.iOS.BLUR_EFFECT_STYLE_DARK,
];

tabs.addEventListener("click", function(e) {
    blur.setEffect(effects[e.index]);
});

win.add(tabs);
win.add(img);
win.open();