Download PDF by Joshua Marinacci: Building Mobile Applications with Java: Using the Google Web

By Joshua Marinacci

ISBN-10: 1449333273

ISBN-13: 9781449333270

Do you need to strengthen cellular apps with Java—and have them paintings on a number of units powered via iOS and Android? You’ve come to the suitable place.

This project-driven booklet indicates you the way to construct transportable apps with awesome open resource frameworks, Google net instruments (GWT) and PhoneGap. With those instruments, you’ll use the best way to write Java code that compiles into cross-platform Javascript and HTML, and realize the way to reap the benefits of good points in different renowned units, reminiscent of the digital camera, accelerometer, and GPS.

- start with GWT through construction an instance Twitter seek app
- construct a instance net app and adapt it for cellular with CSS
- upload contact centric controls with the GWT cellular UI library
- strengthen a operating wine magazine app that tracks a user’s GPS location
- Use recommendations to make a cellular model of your internet or computing device app
- paintings with HTML5 Canvas to construct a cellular video game
- package deal your apps for iOS, webOS, and Android with PhoneGap

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Additional resources for Building Mobile Applications with Java: Using the Google Web Toolkit and PhoneGap

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Now we can jump back into the CSS. For the desktop version we want the header on top, the navigation on the left, and the content in the center adjacent to the nav and below the header. #header_container { } #nav_container { position: absolute; width: 10em; left: 0px; top: 4em; } #content_container { position: absolute; 32 | Chapter 4: Customizing Your App for Mobile } left: 11em; top: 4em; I left the header alone since it looks fine. For the nav and content containers I made them be absolutely positioned then hard coded a width, left, and top value.

Instead make your navigation one level. Even if your web/desktop menu has multiple levels, one level is better. To adapt it first remove features you won’t need. Then if you still need multiple levels switch to a flattened hierarchy. This is when everything is at one level but still grouped together. For example, suppose your interface lets the user choose from 50 movies to watch. The desktop version might have a two level menu. The first level is for the genre (action, comedy, horror, etc) then the second level lists the available movies in that genre.

It has no tables, schemas, or data types; just keys and values. Keys and values may seem limiting, but they are actually quite flexible. We just need a way to neatly convert our list of wines into a bunch of key value pairs. Start by thinking in reverse: how would we store a single wine object. The wine object has several fields on it. name field as the value. variety. Saving the Wine Data | 43 Now suppose we want to store two wines? Storing both wine names with the key name wouldn’t work because the second wine would overwrite the first one.

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Building Mobile Applications with Java: Using the Google Web Toolkit and PhoneGap by Joshua Marinacci


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