public static Typeface googleSans(Context context) {
        synchronized (TypefaceHelper.class) {
            if (sGoogleFont == null) {
                sGoogleFont = Typeface.createFromAsset(context.getAssets(), "fonts/google/ProductSansRegular.ttf");
            }
            return sGoogleFont;
        }
    }
Created by Tornaco on 2018/6/13 14:07.
This file is written for project X-APM at host guohao4.
android/modules/module_common/src/main/java/github/tornaco/android/thanos/util/TypefaceHelper.java