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Android Build a Weather App (2015) Networking Making an HTTP GET Request with OkHttp

What is ApiKey?

Hello, I searched it on internet, but i get different definitions. What is the apiKey we used in here and why we have it in a different variable. Have a nice day.

If you're following along and using the Forecast API, the api key is a code passed in used to call to the Forecast API. After you complete the registration on the website, your API key is displayed in a textfield at the bottom of the web page.