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The Definitive advisor to raise will train you approximately carry, an outstanding framework for construction compelling net functions. carry is designed to make robust strategies simply obtainable, whereas protecting the final framework easy and versatile. elevate makes it enjoyable to advance since it allows you to concentrate on the fascinating elements of coding. through the tip of this e-book, you can actually create and expand any internet software you could ponder. What you’ll examine discover raise, the Scala-based net framework and its basics, kinds, SiteMap, and extra stroll throughout the PocketChange demo program Use the Mapper and list Frameworks Use and combine carry with JavaScript, Ajax, and COMET Create raise widgets follow elevate utilizing JPAs (Java patience APIs) Use Lift's tagging aid and internet prone Use Scala actors, third-party integrators, and extra Who this booklet is for This ebook is for Java net builders searching for whatever less complicated in terms of sensible programming like Scala and its internet framework, carry. This booklet is usually for Rails/Django internet builders trying to find whatever extra scalable. desk of Contents Welcome to boost PocketChange carry basics kinds in carry SiteMap Mapper and checklist complex raise structure raise and JavaScript elevate with AJAX and Comet JPA Integration Third-Party Integrations carry Widgets internet companies
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starting Android four is an replace to starting Android three, initially written by means of Mark Murphy. it's your first step at the route to developing marketable apps for the burgeoning Android industry, Amazon's Android Appstore, and extra. Google’s Android operating-system has taken the via typhoon, going from its humble beginnings as a phone working method to its present prestige as a platform for apps that run throughout a gamut of units from telephones to pills to netbooks to televisions, and the checklist is bound to develop.
shrewdpermanent builders will not be sitting idly by means of within the stands, yet are leaping into the sport of constructing cutting edge and salable purposes for this fast-growing, cellular- and consumer-device platform. If you’re now not within the online game but, now could be your probability!
starting Android four is clean with information at the most modern generation of the Android platform. start at first via fitting the instruments and compiling a skeleton app. go through developing layouts, applying widgets, taking person enter, and giving again effects. quickly you’ll be developing cutting edge purposes regarding multi-touch, multi-tasking, location-based function units utilizing GPS.
You’ll be drawing facts dwell from the web utilizing net companies and delighting your buyers with life-enhancing apps. no longer because the notebook period first begun has there been this a lot chance for the typical developer. What are you looking forward to? seize your reproduction of starting Android four and start!
<h3>What you’ll learn</h3> * improve Java-based cellular purposes and video games for a variety of telephones and units.
* Create person interfaces utilizing WebKit and the Android widget framework.
* construct position- and map-based functions drawing on dwell feeds over the net.
* contain actions, companies, content material services, and broadcast receivers into your purposes.
* aid a number of Android models, a number of monitor sizes, and different device-specific features.
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starting Android four is aimed toward programmers new to Android program improvement who wish to create marketable functions for the burgeoning marketplace of telephone, pill, and different Android gadget clients.
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* utilizing XML-Based Layouts
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* Embedding the WebKit Browser
* making use of Menus
* displaying Pop-up Messages
* dealing with task Lifecycle occasions
* dealing with Rotation
* facing Threads
* developing reason Filters
* Launching actions and Sub-Activities
* operating with assets
* Defining and utilizing kinds
* dealing with a number of reveal Sizes
* Introducing the Honeycomb UI
* utilizing the motion Bar
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* facing units
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Extra info for The Definitive Guide to Lift: A Scala-based Web Framework
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This shows our add method with a few vars to hold the form data and a binding to the proper form elements. In this case, we’re using a StatefulSnippet, so we specify the vars as class members instead of local to the add function. Listing 4-2. An Example Form Snippet ... standard Lift imports... NodeSeq class AddEntry extends StatefulSnippet { ... open_! open_! text(tags, doTagsAndSubmit)) } case _ => Text("") } ... } Another simpler example, just to illustrate a different approach, is given in Listing 4-3.
The Definitive Guide to Lift 41 Listing 3-19. Charting Method ... standard Lift imports ... jfreechart imports... object Charting { def history (accountName : String) : Box[LiftResponse] = { // Query, set up chart, etc... balanceChart = ... encodeAsPNG(buffered) Full(InMemoryResponse(chartImage, List(Content-Type -> image/png), Nil, 200)) } } Once we’ve set up the chart, we use the ChartUtilities helper class from JFreeChart to encode the chart into a PNG byte array. We can then use Lift’s InMemoryResponse to pass the encoded data back to the client with the appropriate Content-Type header.
This pattern of defining a local function to handle form submission is quite common as opposed to defining a method on your class. The main reason is that by defining the function locally, it becomes a closure on any variables defined in the scope of your snippet function. Sprinkling a Little AJAX Spice So far, this code is all pretty standard fare, so let’s add a bit of flavor with more advanced functionality. Listing 2-6 shows a template for displaying a table of expenses for the user with an optional start and end date.