Android Programming: The Big Nerd Ranch Guide by Bill Phillips

By Bill Phillips

Android Programming: the massive Nerd Ranch Guide: is an introductory Android e-book for programmers with Java event. in line with huge Nerd Ranch’s well known Android Bootcamp direction, this advisor will lead you thru the desolate tract utilizing hands-on instance apps mixed with transparent reasons of key thoughts and APIs. This booklet makes a speciality of useful strategies for constructing apps suitable with all types of Android frequent at the present time (Android 2.2 - 4.2). Write and run code each step of ways – growing apps that catalog crime scenes, browse photographs, song your strolling direction, and extra. each one bankruptcy and app has been designed and proven to supply the data and event you must start in Android improvement.

Write and run code each step of how — developing apps that catalog crime scenes, browse images, tune your strolling direction, and extra. every one bankruptcy and app has been designed and validated to supply the data and adventure you must start in Android improvement.

"Big Nerd Ranch supplied the educational we wanted to get 1000's of engineers construction skillfully on Android. This e-book is a smart distillation of that education and should be an important support to an individual trying to ramp up as well." – Mike Shaver, Director of cellular Engineering, fb

"…a must-have for the developer simply beginning in Android or prepared for extra complex strategies. i used to be inspired with this book’s content material and readability of presentation. The authors clarify uncomplicated and complicated Android issues with equivalent ease." – James Steele, writer of The Android Developer's Cookbook

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Now mouse over the red error indicators. They report the same problem: Cannot resolve symbol 'Button'. java. Button; Or you can do it the easy way and let Android Studio do it for you. Just press Option+Return (or Alt +Enter) to let the IntelliJ magic under the hood amaze you. The new import statement now appears with the others at the top of the file. This shortcut is generally useful when something is not correct with your code. Try it often! This should get rid of the errors. ) Now you can wire up your button widgets.

25 Chapter 1 Your First Android Application Running on the Emulator To run an Android application, you need a device – either a hardware device or a virtual device. Virtual devices are powered by the Android emulator, which ships with the developer tools. To create an Android virtual device (AVD), choose Tools → Android → AVD Manager. When the AVD Manager appears, click the Create Virtual Device... button on the lefthand side of the window. In the dialog that appears, you are offered many options for configuring a virtual device.

Xml lives in res/layout/. Your strings file, which contains string resources, lives in res/values/. To access a resource in code, you use its resource ID. activity_quiz. To see the current resource IDs for GeoQuiz, you must first change your project view. 13). This view hides away the true directory structure of your Android project so that you can focus on the files and folders that you need most often. 13 Changing the project view Locate the dropdown at the top of the Project tool window and change from the Android project view to the Project view.

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