Google developed this library in 2013 due to the absence of an Android SDK that can carry out networking without interfering with the user experience. Volley is an HTTP library that’s used for caching and making a network request in Android applications.
This is because running a long task on the UI thread can “freeze” a user’s interface, making it not very user friendly.ĭifferent classes and libraries such as AsyncTask, Retrofit, Volley, and others were introduced to carry out networking in mobile applications. Network requests also can’t be done on the UI thread. Making network calls on the main thread afterwards led to the NetworkOnMainThreadException error in higher SDK levels. This is because network requests proved to be long tasks that required more processing power. Making network requests on the main thread stopped when Google released the Honeycomb version. In the early days, applications made network calls on the main thread.
Networking in mobile applications has been around since its inception.
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