April 2019
Beginner to intermediate
698 pages
15h 15m
English
Content preview from Android Programming with Kotlin for BeginnersBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Looking ahead at the Live Drawing app
As this app is more in-depth and needs to respond in real time, it is necessary to use a slightly more in-depth structure. At first, this may seem like a complication, but in the long run, it will make our code simpler and easier to understand.
We will have four classes in the Live Drawing app, as follows:
MainActivity: TheActivityclass provided by the Android API is the class that interacts with the operating system (OS). We have already seen how the OS interacts withonCreatewhen the player clicks on the app icon to start an app. Rather than have theMainActivityclass that does everything, thisActivity-based class will just handle the startup and shutdown of our app, and offer some assistance with initialization ...
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