Download Android Programming: The Big Nerd Ranch Guide (2nd Edition) by Bill Phillips, Chris Stewart, Brian Hardy, Kristin Marsicano PDF

By Bill Phillips, Chris Stewart, Brian Hardy, Kristin Marsicano

Android Programming: the massive Nerd Ranch consultant is an introductory Android ebook for programmers with Java experience.
Based on sizeable Nerd Ranch's renowned Android Bootcamp direction, this advisor will lead you thru the desert utilizing hands-on instance apps mixed with transparent motives of key ideas and APIs. This e-book specializes in useful recommendations for constructing apps appropriate with Android 4.1 (Jelly Bean) and up, together with insurance of Lollipop and fabric design.

Write and run code each step of how, developing apps that combine with different Android apps, obtain and exhibit images from the net, play sounds, and extra. each one bankruptcy and app has been designed and proven to supply the information and adventure you must start in Android development.

Big Nerd Ranch focuses on constructing and designing leading edge functions for consumers world wide. Our specialists train others via our books, bootcamps, and onsite education. even if it's Android, iOS, Ruby and Ruby on Rails, Cocoa, Mac OS X, JavaScript, HTML5 or UX/UI, we've obtained you coated.

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Additional resources for Android Programming: The Big Nerd Ranch Guide (2nd Edition)

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3) and add m as the Name prefix for fields. Then add s as the Name prefix for static fields. 3 Setting Java code style preferences Click OK. What is the point of setting these prefixes? Now, when you ask Android Studio to generate a getter for mTextResId, it will create getTextResId() rather than getMTextResId() and isAnswerTrue() rather than isMAnswerTrue(). java, right-click after the constructor and select Generate... and then Getter and Setter. Select mTextResId and mAnswerTrue and click OK to create a getter and setter for each variable.

However, it will not run the app. For that, you will need to pull up the launcher and launch the app by hand. 1. 1 More questions! To make this happen, you are going to add a class named Question to the GeoQuiz project. An instance of this class will encapsulate a single true-false question. Then, you will create an array of Question objects for QuizActivity to manage. geoquiz package and select New → Java Class. 2). java, add two member variables and a constructor. java) public class Question { private int mTextResId; private boolean mAnswerTrue; } public Question(int textResId, boolean answerTrue) { mTextResId = textResId; mAnswerTrue = answerTrue; } The Question class holds two pieces of data: the question text and the question answer (true or false).

Ignore these errors for now; you will fix them soon. 10. Every widget has a corresponding XML element. The name of the element is the type of the widget. Each element has a set of XML attributes. Each attribute is an instruction about how the widget should be configured. To understand how the elements and attributes work, it helps to look at the layout from a hierarchical perspective. 12 The view hierarchy The view hierarchy Your widgets exist in a hierarchy of View objects called the view hierarchy.

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