PhoneGap Mobile Application Development Cookbook

With your JavaScript, HTML, and CSS talents, you simply have to upload PhoneGap to begin developing local cellular apps for cross-platform units. The forty+ recipes during this publication will express you ways, swiftly and virtually.

  • Use the PhoneGap API to create local cellular functions that paintings on quite a lot of cellular units
  • Discover the local machine positive aspects and capabilities you could entry and contain inside your applications
  • Packed with transparent and concise examples to teach you the way to simply construct local cellular purposes

In Detail

As increasingly more of our on-line lifestyles and day-by-day actions evolve into the cellular panorama it hasn't ever been of extra value to begin venturing into the realm of cellular applications.

With PhoneGap, you could placed your current improvement abilities and HTML, CSS, and JavaScript wisdom to nice use through growing cellular apps for cross-platform devices..

"PhoneGap cellular software improvement Cookbook" will assist you to create local cellular purposes for a number of equipment structures utilizing the PhoneGap API. you are going to discover ways to construct dynamic purposes that engage with the local performance at the gadget to create a wealthy, interactive event in your users.

This is a cookbook with each one part written as a recipe in a casual, pleasant kind. each one recipe comprises the total code had to construct your functions, and lots of screenshots exhibiting the finished initiatives operating on units are integrated to aid you.

"PhoneGap cellular software improvement Cookbook" will introduce the PhoneGap API to you in transparent, concise sections, breaking down each one recipe to accomplish sensible operating tasks that may be utilized in your personal cellular applications.

You could be proven tips to use the cellular improvement framework to construct functions that may be deployed and run on a number of cellular systems together with iOS, Android, and BlackBerry.

This ebook will discover a number of the tools and features to be had utilizing the API, and the way to put in writing code that interacts with the local features, together with geolocation sensors, contacts database, and local button occasions of the gadget to create strong purposes prepared for the marketplace place.

"PhoneGap cellular program improvement Cookbook" might help you holiday into the area of cellular program improvement. construct cellular functions in code you’re pleased with, create a richer person adventure in your clients and develop into a part of the ever-growing cellular industry place.

What will you examine from this booklet

  • Build your program to engage with real-time sensor data
  • Learn find out how to shop facts and cache information and content material utilizing HTML5 garage APIs
  • Access the digicam of the equipment to create a continuing multimedia workflow
  • Set up your PhoneGap cellular improvement environment
  • Think cellular: improve with dimension in brain utilizing light-weight JavaScript frameworks
  • Access the touch database of your device
  • Enhance your software by way of developing customized plugins outfitted utilizing customized local code
  • Use HTML5 and CSS3 on your cellular applications


This cookbook comprises recipes with lots of instance code and is stuffed with screenshots to make the training curve more straightforward and quicker.

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With the relationship made to the gadget garage, we will reference the basis procedure utilizing the fileSystem item supplied via PhoneGap. the following we then name the getFile process, supplying the identify of the dossier we want to open. If it does not exist it will likely be created for us. functionality onFileSystemSuccess(fileSystem) { fileSystem. root. getFile("readme. txt", {create: real, unique: false}, gotFileEntry, fail); } eight. After a winning reaction, the again FileEntry item is assigned to the fileObject variable we created prior. At this element we will additionally bind a click on handler to our shop button, so that it will run the saveFileContent functionality while clicked. functionality gotFileEntry(fileEntry) { fileObject = fileEntry; fifty four Chapter 2 x$('#saveFile_btn'). on('click', function() { saveFileContent(); }); } nine. As we are facing an area dossier that, as of but, does not have any content material, we will use tools in the PhoneGap API to write down to the dossier. The saveFileContent technique will entry the fileObject and speak to the createWriter approach to begin this technique. functionality saveFileContent() { fileObject. createWriter(gotFileWriter, fail); } 10. Let's now create the gotFileWriter technique referred to as as a callback from the keep functionality. we will ship the price from the my_text enter box into the author. write() solution to populate the dossier content material. After the writing has complete, we are going to output a standing message into the message div point after which instantiate the FileReader item to learn the dossier contents. eleven. we'll then go the fileObject into the reader. readAsText() strategy to go back the textual content content material of the dossier. After the learn has accomplished, we are going to output the contents into the div aspect for show. functionality gotFileWriter(writer) { var myText = record. getElementById('my_text'). price; author. write(myText); author. onwriteend = function(evt) { x$('#message'). html('

File contents were written.
File path: ' + fileObject. fullPath + '

'); var reader = new FileReader(); reader. readAsText(fileObject); reader. onload = function(evt) { x$('#contents'). html('File contents:
' + evt. aim. result); }; }; } 12. eventually, contain the fail mistakes handler technique to capture any difficulties or blunders: functionality fail(error) { alert(error. code); } fifty five File approach, garage, and native Databases thirteen. once we run the appliance on our gadget, we should always see output just like the subsequent screenshot: the way it works... to achieve entry to the filesystem at the gadget, we first request entry to the continual garage, which then offers us with entry to the fileSystem item. Navigating to the basis of the filesystem, we then name the getFile procedure, so that it will lookup throughout the asked dossier, or create it if it does not exist already within the precise situation. as soon as a consumer has typed content material in to the enter textbox, we will then instantiate a FileWriter item at the stored item containing the dossier reference and write the user-supplied content material to the dossier. we will additionally utilize the FileWriter object's onwriteend approach, known as whilst the request has accomplished, to output a message to the consumer after which commence the request to learn the contents of the dossier, accomplished by using the FileReader item.

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