在检索json数据时遇到困难。如何检索

Basically i am trying to make an weather app. And i tried to retrieved some data (lets say lat and lon from crood object) but whenever i run the application it doesn't show me any error but it show in logcat an exception which says "No value for crood". I have tried every resource that i had but i am unable to display data to textviews. Basically i am trying to make an weather app. A