July 2018
Intermediate to advanced
266 pages
7h 11m
English
Content preview from Learning Concurrency in Kotlin
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NetworkOnMainThreadException
In Java, network operations are blocking by nature. Calling a web service, for example, will block the current thread until a response is received or a timeout/error happens. Because blocking the UI thread would mean freezing all the UI – including animations and any other interactions – Android crashes whenever a network operation is made on the UI thread. The NetworkOnMainThreadException exception will be thrown whenever this happens, forcing developers to use a background thread, and thus improving the user experience.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.