New PDF release: 20 Recipes for Programming PhoneGap: Cross-Platform Mobile

By Jamie Munro

ISBN-10: 1449319548

ISBN-13: 9781449319540

Gain hands-on adventure with the superb PhoneGap library, utilizing the sensible recipes during this convenient advisor. With those ideas, you could allow your cellular internet apps to engage with device-specific good points similar to the accelerometer, GPS, digicam, and deal with publication. the way to use your wisdom of HTML, CSS, and JavaScript to construct complete cellular apps for iOS, Android, and a number of other structures with no rewriting apps within the local platform language. every one recipe comprises pattern code you should use on your undertaking right now, in addition to a dialogue of why the answer works.
* upload performance that’s on hand basically on a definite machine or platform
* Retrieve the device’s present GPS situation and position a marker on a map
* Create and shop a brand new touch or edit an latest touch within the deal with publication
* Take photographs with the digital camera or opt for one of many user’s current pictures
* add a dossier from the neighborhood machine to an exterior server
* let the machine to checklist audio or video via your app
* allow your software to save lots of records in the neighborhood

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Additional resources for 20 Recipes for Programming PhoneGap: Cross-Platform Mobile Development for Android and iPhone

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99. As the device rotates around, the needle will move as well, indicating the current direction. This feature might not work correctly in all simulators and an actual device may be needed. See Also jQuery Rotate Plug-In 24 | The Recipes Using the Accelerometer to Detect Motion Problem You want to detect the motion of the device as it moves. 0 and above are able to detect the device’s current x, y, and z axis movements. getCurrentAcceleration function. clearWatch function allows you to turn off receiving the updates.

CaptureAu dio functions. See Also “Saving Data to a Remote Server” on page 43 Capturing Audio and Video | 47 Notifying the Device with Alert, Confirm, and Vibrate Problem You want to customize the standard alert and confirm dialogs or notify the user by making the device vibrate. Solution The standard JavaScript alert and confirm dialogs work quite well and are even displayed in the device’s style; however, in your application you might want to customize the buttons that appear or even make the device vibrate (like a game controller).

First, drawImage clears the canvas’s screen; then it draws the image of the ball on screen in the new x, y coordinates that were calculated in the moveBall function. drawImage function, you can read this article I wrote when experimenting with the tag to create a walking animation using an image sprite. If there was an error detecting the acceleration, the stopBall function is called. clearWatch function. An alert dialog box appears as well to inform the user of the error. This code is an excellent start to creating a labyrinthine game using the device’s motion sensors.

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20 Recipes for Programming PhoneGap: Cross-Platform Mobile Development for Android and iPhone by Jamie Munro

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