There are a number of text conventions used throughout this book.
CodeInText: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "There is also the concept of AutoCloseable, which is an interface that all the peripherals implement."
A block of code is set as follows:
dependencies {
[...]
implementation 'com.google.android.things.contrib:driver-rainbowhat:+'
}
When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:
class MainActivity : Activity() {
private lateinit var led: Gpio
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setup()
while (true) {
loop()
}
}
Any command-line input or output is written as follows:
$ sudo ./android-things-setup-utility-macos
Bold: Indicates a new term, an important word, or words that you see onscreen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "We select Install Android Things."
Warnings or important notes appear like this.
Tips and tricks appear like this.
