Conventions

In this book, you will find a number of text styles that distinguish between different kinds of information. Here are some examples of these styles and an explanation of their meaning.

Code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, and user input are shown as follows: "We will add proper log messages for each lifecycle event of the Application class and the screen (activity) we created."

A block of code is set as follows:

    override fun onCreate(savedInstanceState: Bundle?) { 
      super.onCreate(savedInstanceState) 
      setContentView(R.layout.activity_main) 
      Log.v(tag, "[ ON CREATE 1 ]") 
    } 

Any command-line input or output is written as follows. The input command might be broken ...

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