Download Building Hybrid Android Apps with Java and JavaScript: by Nizamettin Gok, Nitin Khanna PDF

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 out utilizing third-party libraries and wrappers equivalent to PhoneGap or Titanium. This concise, hands-on booklet takes you thru the total technique, from constructing your improvement surroundings to deploying your product to an app store.

methods to create apps that experience entry to local APIs, equivalent to situation, vibrator, sensors, and the digital camera, utilizing a JavaScript/Java bridge—and opt for the language that offers you greater functionality for every activity. when you have event with HTML5 and JavaScript, you’ll quick detect why hybrid app improvement is the wave of the future.
• manage a improvement atmosphere with HTML, CSS, and JavaScript instruments
• Create your first hybrid Android undertaking, utilizing Eclipse IDE
• Use the WebView keep watch over to host your hybrid program
• discover hybrid program structure, together with JavaScript/Java verbal exchange
• construct single-page functions, utilizing JavaScript libraries reminiscent of spine and Underscore
• Get optimization information and beneficial snippets for CSS, DOM, and JavaScript
• Distribute your program to Google Play and the Amazon Appstore

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Now, let’s assume you wish to experiment with some other color scheme and would like to see how your application looks in the new color model. Traditionally, you would perform a mass search and replace within the CSS files, replacing old color values with new ones. This old method is cumbersome at best, as this kind of mass replace is often error prone because reverting the changes back may affect the other values. This is where the CSS preprocessors become a really handy tool for many developers and designers.

An Ant target can depend upon a number of other Ant targets for completion, there by allowing us to build modular tasks. Ant tasks A unit of work that Ant can execute, such as compiling a source file, renaming files, and so on. As discussed earlier, there are number of tasks that come prepackaged with Ant. Users can develop their own tasks in Java or another scripting language as desired. 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.

This class serves as the main entry point to the application. Each Android application is required to declare one instance of this class. Application should be sufficient, however, since this is the only pervasive class in the whole Android application, it is often used by developers to store application-wide accessible data. The Android OS will instantiate an object of this class whenever the application is launched. Android applications are special, and they stay in memory even when the user closed the UI screens.

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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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