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

By Joshua Marinacci

Do you need to strengthen cellular apps with Java—and have them paintings on numerous units powered by means of iOS and Android? You’ve come to the fitting place.

This project-driven publication indicates you the way to construct moveable apps with striking open resource frameworks, Google net instruments (GWT) and PhoneGap. With those instruments, you’ll use how to write Java code that compiles into cross-platform Javascript and HTML, and become aware of easy methods to make the most of good points in different renowned units, corresponding to the digicam, accelerometer, and GPS.

- start with GWT through construction an instance Twitter seek app
- construct a instance internet app and adapt it for cellular with CSS
- upload contact centric controls with the GWT cellular UI library
- enhance a operating wine magazine app that tracks a user’s GPS location
- Use thoughts to make a cellular model of your net or laptop 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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Many devices can actually be rotated using an accelerometer, which is the device equivalent of resizing the browser window. You can create conditional styles to deal with this by sticking with the width media selector. The width will usually be updated when the user rotates the device. If you want to do something special just for portrait or landscape mode, rather than depending on the screen width you can do it with these media selector: @media all and (orientation:portrait) { } @media all and (orientation:landscape) { } CSS is incredibly powerful.

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. We need the two keys to be unique, and also associated with the actual wine object. We can do this by giving each wine an ID and using that ID as part of the key. variety); I added an id field to the Wine class. If the id is currently unset (null) then it generates a new random id. Since Java’s random numbers are quite large we can be confident that they will be unique.

The markup for the main DockLayoutPanel of PerchSearch looks like this:

 
 
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