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Hello, Android, 4th Edition by Ed Burnette

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Thanks to Android Studio, creating a skeletal Android program takes only a few seconds. In Chapter 3, Opening Moves, we’ll begin to flesh out that skeleton with a real application—a Tic-Tac-Toe game. This sample will be used in several chapters to demonstrate Android’s API.

But before delving into that, you should take a few minutes to read Chapter 2, Key Concepts. Once you grasp the basic concepts such as activities and life cycles, the rest will be much easier to understand.

Although the use of Android Studio to develop Android programs is optional, I highly recommend it. If you’ve never used IntelliJ before, you may want to invest some time reading the IntelliJ IDEA Quick Start guides at the JetBrains website.[20] Pay ...

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