By Nizamettin Gok, Nitin Khanna

ISBN-10: 1449361919

ISBN-13: 9781449361914

Build HTML5-based hybrid functions for Android with a mixture of local Java and JavaScript elements, with no utilizing third-party libraries and wrappers similar to PhoneGap or Titanium. This concise, hands-on ebook takes you thru the complete procedure, from constructing your improvement atmosphere to deploying your product to an app store.

the right way to create apps that experience entry to local APIs, similar to position, vibrator, sensors, and the digicam, utilizing a JavaScript/Java bridge—and pick out the language that provides you greater functionality for every job. when you have event with HTML5 and JavaScript, you’ll quick observe why hybrid app improvement is the wave of the future.
• organize a improvement setting with HTML, CSS, and JavaScript instruments
• Create your first hybrid Android undertaking, utilizing Eclipse IDE
• Use the WebView keep an eye on to host your hybrid program
• discover hybrid software structure, together with JavaScript/Java communique
• construct single-page functions, utilizing JavaScript libraries corresponding to spine and Underscore
• Get optimization information and beneficial snippets for CSS, DOM, and JavaScript
• Distribute your software to Google Play and the Amazon Appstore

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Extra info for Building Hybrid Android Apps with Java and JavaScript: Applying Native Device APIs

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The qualifier allows Android to pick up files based on device capabilities; it is a predefined suffix that you can add after drawable to help Android will pick the right resources based on the device. In the previous example, ldpi is low dpi, and for devices that have very low density screens, images will be picked up from here. More details on resource resolution can be found at the Android Supporting Multiple Screen website. 42 | Chapter 3: Android Fundamentals res/layout{qualifier} Screen layouts in Android are XML files.

There are other types of resources, as noted previously. Discussing them is outside the scope of this chapter. Compiled and Uncompiled Android Resources While most of the Android resources get compiled into a more optimum binary format, raw resources are copied as-is to the device. One key advantage of compiled resource files is that they allow you to pick correct resources based on device language. However, there may be times when you do not want this to happen. For such files, you can place them inside the /res/raw/ directory instead, they don’t get compiled into binary format.

As you delve deeper into the details of Ant, you’ll realize the whole Ant task notion is very flexible and can be leveraged to perform very complex operations in a modular way. xml—will be gen‐ erated by the Android tool. We will look at some of these files in this chapter. xml for now. dir is missing. xml" /> To create the Ant build system for an existing project created using Eclipse, run the following: $ cd project_dir $ android update project -p . xml quite similar to the one just shown.

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Building Hybrid Android Apps with Java and JavaScript: Applying Native Device APIs by Nizamettin Gok, Nitin Khanna


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