Tuesday, April 30, 2013

Multiple row selection in iPhone table view

In this tutorial I will explain the most powerful feature of UITableView, called multiple selection of rows. Create a new project in Xcode using single window application template and name it as TableViewMultiSelection. Before proceeding further we need to add a navigation controller to the AppDelegate and make ViewController as its root view. We can


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Table view with insert and delete rows in iPhone

A very common feature for almost all iOS applications is UITableView and its data source and delegate protocol. In this tutorial I will explain how to edit table view rows with little animations. i.e I will discuss how to delete and insert a row within the table view. Open Xcode and proceed with the single


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Creating a Game with Bonjour – Game Logic

In this article, we will discuss two topics, (1) creating the game and (2) leveraging the foundation that we created in the previous articles. In the previous article, a bug has found its way into our project. I must admit that it took me quite some time to discover this nasty, little creature. Don't worry, though. We will squash this bug as we go and I will show you exactly where it is causing havoc. Even though I could have updated the previous article to get rid of the bug, I prefer to show you how to find and fix the bug as it will help understand how the CocoaAsyncSocket library works. We have quite a bit of work ahead of us so let's get started.


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Today iOS Development Resources, Articles, Tutorials and Open Sources

Today iOS Development Resources, Articles, Tutorials and Open Sources

1. Customizable iOS UI Control Inspired By The Windows Phone 8 App Bar


A customizable open source UI control inspired by the Windows 8 App Bar providing a very neat animated menu interface.


You can find CommandMaster on Github here.

A very nice replica of the App Bar with a number of extra features.

As always make sure you make considerable changes to something like this  if you are going to use it within an app.

2. Xcode Plugin Providing A Highlighted Code MiniMap – Quickly See Where You Are

An Xcode plugin that automatically creates a minimap visualizing the current code window allowing you easily see where you are in your code.


You can find SCXcodeMiniMap on Github here.

Another very nice Xcode plugin.

3. Open Source Component For Easily Adding A Newsletter Opt-In Form Into Your Apps

An open source component allowing you to easily create a customizable e-mail submission form for adding a mailing list to your apps using MailChimp.


You can find the DevNewsletter component on the homepage here.

You'll need to sign-up with MailChimp for your mailing list – the good news is they have an "always free" level for storing 2,000 e-mail addresses, and sending 12,000 e-mails per month.

A nice simple way to add an e-mail opt-in form into an app.

If you've created, or come across any iOS developer resources that you'd like to share you can submit them in below comment section.

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Monday, April 29, 2013

Build an Interactive Home Screen Experience with Telerik HubTile for WP8

Look at your app's home screen. Does it consist of only a couple of navigation buttons thrown on the screen? If you want to delight your users from the moment they launch your app, you need to give it the look and feel of the Windows Phone home screen. Thankfully, we have RadHubTile to assist us with this. RadHubTile comes with a set of different tile types that helps developers easily implement the Windows Phone home screen experience in their apps. They consist of many different types as described below.


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Notifications and Background Tasks in Windows 8 Store Apps

Windows 8 Store apps are meant to be geared for an always connected world where our apps are constantly connected (to the internet) and have updates ready for us whenever they are available. Towards this, Windows 8 Store apps have support for a robust Notifications framework that can tell users about updates in various forms like "Toast Notifications", "Live Tile Updates" and "Lock Screen Updates". Today we will see how to use these notification types and also the programmatic APIs that we need to use to make best use of the notifications framework.


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Detect the screen resolution for WP7 applications

As you probably know Windows Phone 7.1 applications run perfectly on Windows Phone 8 devices. This means that your application/s could run on multiple display resolutions (which are the resolutions supported by Windows Phone 8 devices). If you want to take advantage of the new resolutions (for example downloading higher quality images for higher resolutions devices, fix some minor UI anomalies on higher resolutions) you will need to know the ScaleFactor of the device. The property is only available in the Windows Phone 8.0 SDK, but the good news is that you can access it using reflection.


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When do I use data binding?

A recent MSDN forum post asked a good question, one that I realized isn't often adequately answered for developers new to the concept of data binding. It's simply then question, "When do I use data binding at all?" Here's how I answered the question, and I'd enjoy hearing your thoughts on the matter.


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WCF 4.5 Services Development with Entity Framework and MVC 4

In this article, I'll be covering the implementation of Windows Communication Foundation (WCF) with Entity Framework (EF) and MVC 4. As far as prerequisites are concerned, I assume you have some familiarity with basic Web service and Web application concepts. However, I don't expect you to have any concrete experience using WCF or .NET 4.5. This will cover some of the basics around what it takes to build a simple application using WCF 4.5, with Entity Framework and present the data in the front-end using MVC 4. This application will be using a sample database (Northwind database), which is widely available on the Internet. The development environment used is Visual Studio 2012. The end result of this application will be displaying the data on an ASP.NET MVC. The service will be exposed and returns a list of ten most expensive products.


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HTTP: The Protocol Every Web Developer Must Know – Part 2

A connection must be established between the client and server before they can communicate with each other, and HTTP uses the reliable TCP transport protocol to make this connection. By default, web traffic uses TCP port 80. A TCP stream is broken into IP packets, and it ensures that those packets always arrive in the correct order without fail. HTTP is an application layer protocol over TCP, which is over IP. HTTPS is a secure version of HTTP, inserting an additional layer between HTTP and TCP called TLS or SSL (Transport Layer Security or Secure Sockets Layer, respectively). HTTPS communicates over port 443 by default, and we will look at HTTPS later in this article.


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7 Free jQuery Panoramic Image Viewer Plugins Examples

Introduction: Here I will explain 7 best jQuery Panorama Image Display Plugins examples. Panoramic view is a wide angle view of any place using many images combined together so that you can view it as 360 degree by using jQuery Panorama Image Display Plugins. Description: In previous article I explained 8 jQuery 360 Degree view of image plugins, 8 jQuery Popup Window Plugins, 8


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Writing Games With Unity 3D in JavaScript and C# – Part 1

Unity is a development environment for creating professional-level games. It is built on top of MonoDevelop, and utilizes it to achieve the deployment of the same code to many platforms. Unity comes in two versions, but this post will focus on the free version with no add-ons. The free version (which is the one I use) supports out-of-the-box deployment to Mac, Windows, Linux, Web, and Google Native (a Chrome technology for deploying without plugins). Additionally (as of this writing), for $400 each deployment to Android and iOS (both iPhone and iPad) is available. If you are part of a team, a team license that adds collaboration capabilities to share assets is available for $500. The free version supports multiplayer games, physics, 3D audio, animation, Direct3D 11, shaders, light mapping, and terrains among other useful features. If you happen to be an XBox360, PS3, or Wii developer, you can deploy to those platforms as well, although I don't know the licensing details. Unity Pro is a $1,500 license and extends Unity with many high-end capabilities like level of detail (LOD), automatic path finding, high end audio filters, video playback and streaming, IK animation, 3D textures, realtime shadows, and many other professional features. The Android and iOS licenses for the pro version are $1,500 apiece and support features that the $400 versions do not.

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YouTube™ API for ASP.NET

Embedded Video Players, based either on Adobe Flash™ or Microsoft Silverlight™ technology, could dramatically improve web page aesthetic appeal and overall user experience. This article demonstrates the coding technique for embedding the popular YouTube™ Video Player (which is built on the above mentioned Adobe Flash™) in ASP.NET web pages via an API written in C# and a Microsoft AJAX extension.


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WP Series – Preloading Content

Mostly phone apps, connect to a service for the data and wrap them up to a cool UI for user consumption. But at times we would have apps that comes with a lot of preloaded content, with offline capability using sqlite. Offline scenarios might either start of with preloaded content or get content on the apps first launch. This article is more for the scenario where we have preloaded content bundled with the app, and then on launch of the app, it would also get new content and updates to existing content. Complete knowledge of the pre-loaded content at the time of development would be rare. All you would know would be the metadata schema and how/where to look for the preloaded content. We would not be creating a fully functional sample here, but would be touching on important aspects and the approaches that can be used to tackle similar scenarios and some code snippets.


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Metro UI Alert Message using Asp.Net User Control & jQuery

In our websites we show different alert messages for different purposes. Some very common alert messages are "Invalid Username or Password", "Item inserted successfully", "Thank you for contacting us. We will get back to you soon" or sometimes we show exception messages as well. These messages are usually shown in alert boxes or sometimes in different places on the website. In big projects we have to show numerous numbers of alert messages. Sometimes it is difficult to manage all messages and we use different type of messages for same purpose. In this article I am going to talk about how we can show different alert messages and manage all messages from one place.


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Custom Controller Factory in ASP.NET MVC

In any MVC framework, the controller is the glue between your View and Logic. The controller object is created by the default controller factory object using the constructor with no parameters. The below diagram shows request processing using controller factory:


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Step by Step working with Windows Azure Mobile Service Data in XAML based Windows Store Apps

In this post we will take a look on working with Windows Azure Mobile Service in XAML based Windows Store Application. We will follow step by step approach to learn goodness of Windows Azure Mobile Service. In first part of post we will configure Windows Azure Mobile Service in Azure portal. In second part of post we will create a simple XAML based Windows Store application to insert records in data table. This is first post of this series and in further posts we will learn other features of Windows Azure Mobile Services.


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25 iOS App Performance Tips & Tricks

This is a post by iOS Tutorial Team Member Marcelo Fabri, an iOS developer working at Movile. Check out his personal website or find him on Twitter or on Google+. When developing an iOS app, it's critical that your app has good performance. Your users expect it, and it will hurt your reviews if your app appears unresponsive or slow. However, due to the limitations of iOS devices this can sometimes be quite hard to get working quite right. There's a lot to keep in mind during development, and it's easy to forget the performance impact of your decisions. That is exactly why I wrote this article! This article gathers together 25 tips and tricks that you can use to improve the performance of your apps, in the form of a handy checklist. So keep reading to give your future apps a nice boost!


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JustCode Delivers Again! Painless Unit Testing in WinJS Applications

One of the biggest complaints I hear as I travel around the world promoting Modern Application Development with WinJS is the lack of support for WinJS unit testing. Those that follow this blog know that I am a huge proponent of unit testing, and some have even commented that I've been relatively dark on the subject when I write about WinJS development.


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iOS SDK Tutorials : iOS 6 and the Social Framework: Twitter Requests

This tutorial will teach you how to use the iOS 6 SDK and the Social Framework to load dynamic content from Twitter. To do so, I'll teach you how to build a Twitter profile generating application. Read on!


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Building installation project with serial number validation using VSI, Orca, C++, or Delphi

In a Visual Studio Installer (VSI) project, we can add a Customer Information dialog box in the user interface. This dialog box has an input field for a serial number. There is minimal support for validating this field in visual studio; and unfortunately there are only few articles talking about how to include custom code to validate the serial number that is entered by the user. This article provides the necessary steps to do custom validation in VSI setup projects using external DLL file written in C++ or Delphi and I'll give two demos in both C++ and Delphi.


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iOS SDK Tutorials : Working with the NSOperationQueue Class

Multi-tasking prevents apps from freezing. In most programming languages, achieving this is a bit tricky, but the NSOperationQueue class in iOS makes it easy! This tutorial will demonstrate how to use the NSOperationQueue class. An NSOperationQueue object is a queue that handles objects of the NSOperation class type. An NSOperation object, simply phrased, represents a single task, including both the data and the code related to the task. The NSOperationQueue handles and manages the execution of all the NSOperation objects (the tasks) that have been added to it. The execution takes place with the main thread of the application. When an NSOperation object is added to the queue it is executed immediately and it does not leave the queue until it is finished. A task can be cancelled, but it is not removed from the queue until it is finished. The NSOperation class is an abstract one so it cannot be used directly in the program. Instead, there are two provided subclasses, the NSInvocationOperation class and the NSBlockOperation class. I'll use the first one in this tutorial.


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Understanding Design Patterns in JavaScript

Today, we're going to put on our computer science hats as we learn about some common design patterns. Design patterns offer developers ways to solve technical problems in a reusable and elegant way. Interested in becoming a better JavaScript developer? Then read on.


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POLAR - Creating a Virtual Machine in .NET

Before starting, I must say that this is an advanced topic. I tried to make it simple and correct what, in my opinion, are common errors when explaining the process of compilation. But, either way, the virtual machine has assembler(-like) instructions. So, being assembler, it is a hard topic. Knowing any other assembler programming language will really help understand this article. So, if you feel comfortable with assembler, or want to see if my explanation is good, continue reading. In this article, I will try to explain step-by-step about how to build a virtual machine and a C# like compiler for such a virtual machine. The name (POLAR) was chosen because it is easy to remember, because I like freezing temperatures and because I managed to create a meaning for it.


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Tutorial on Message Exchange Patterns and Asynchronous Operations in WCF

In this article we will discuss the various message exchange patterns that the WCF service supports. We will also discuss how we can invoke the WCF service functions asynchronously. We will try to see each one of these message exchange techniques in details and try to see a sample application for each one of them.


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See How Easily You Can Test Your RadGrid for ASP.NET AJAX

Automating a Grid component can be a challenge and not because it's hard. It has it subtleties, but it's not the most complicated thing in the trade, by far. With Telerik Test Studio you can test RadGrid for Asp.Net AJAX with ease and thoroughness. In this blog post I'll show a few tips that can make this not only possible, but a child's play for everyone.


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Sunday, April 28, 2013

Get Ready for WP8 Development

With the this version of mobile operating system, Microsoft has introduced many new features in Windows Phone 8.0 devices. We've seen some of them here. Features for consumer, means APIs for developers. And Windows Phone provides many new APIs/Features/Tools which developers can benefit from. If you're a hobbyist developer, developing for Windows Phone is totally free. Please note: however, if you want to sell your apps and make money out of it, you need pay something. And in this post we'll discuss all the necessary steps involved in developing Windows Phone 8.0 applications along with tools/SDKs required.


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Easily create a Modern UI with RadControls for WPF using RadTileList – Part 2

In Part 1 of "Easily Create a Modern UI with Radcontrols for WPF using RadTileList", we discussed how to get started using RadTileList to achieve a Modern UI Style for your XAML applications (WPF & Silverlight), similar to the start menu screen of Windows 8. If you haven't read that post yet, then I'd encourage you to start from there, then pickup with this post as we will be expanding upon the example we left off on as well as answering several questions that you might have had. I'm going to be using RadControls for WPF Q1 2013 Service Pack 1 for this example. You may want to go ahead and download it now. You can follow along with this blog post with either the WPF or Silverlight bits. The completed source code for this project is also available here.


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WP Series – MVVM and ApplicationBar

ApplicationBar on a windows phone, is to provide users of your app with quick access to the most commonly used tasks. For a mail app this would be refresh/new mail, for a photo app it might be like/unlike button, settings etc are common buttons that appear in an ApplicationBar . But then not always do we have them as static, and we would want to add/remove icons/menu items to that based on the applications current state.For example, you would want to add the like/unlike button only if the user is logged in, or even the settings icon would be only for logged in users. Whatever might be your scenario, if you are looking for to add/remove icons from the application bar from your code then this article is for you.


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Loading dynamic XAML with template support in WP

I have thought that in the future to write more posts in English. I know that all my Swedish readers have no problem with it. Sometimes you want more flexibility to adapt the user interface for the data you download from a Web service. With dynamic loading of XAML one can both send data and a description of how this data should be displayed. With templates, you do not build the user interface and insert the data in the on the server side. One can instead bind the user interface and the data on the client side. In this article I will show you how to load XAML from a local xml file. (In reality, this xml obviously come from a Web service.) I also want to show you how to get bindings to work to show the data.


I guess you came to this post by searching similar kind of issues in any of the search engine and hope that this resolved your problem. If you find this tips useful, just drop a line below and share the link to others and who knows they might find it useful too.

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Quickly and easily save properties of your UI controls with Telerik’s Persistence Framework ...

Many applications require a way to store the user's state so that it can be restored when the application is restarted. For example, you might want to preserve the user's font choice or book selection. There are numerous approaches to solving this problem in WPF, SavingStateWPF but none is easier than using the Telerik PersistenceFramework.


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How to Hide the Format Toolbar of Telerik RadRichTextBox control?

If you are using Telerik's RadRichTextBox control in your Silverlight application, you might have noticed that the control exposes a format tool which pops up in the screen when you select some text inside the control. This is the same behaviour that you notice in Microsoft Word too. But for some reason, you might want to hide that toolbar if you are building an application like notepad. This small post will cover the same for you. Let's assume a scenario where you are building a Silverlight application which acts like a notepad and there user should not be able to change the color and other formatting options of the selected text. This is very easily achievable using just a TextBox control. But think of an app where you want to provide some other options like inserting table or an image. The default TextBox control will not help you there. For this you have to use a RichTextBox control. Telerik's RadRichTextBox control comes...


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Code snippet for testing network connectivity

Thanks to my associate Tonu Vanatalu for this. He wrote it in response to some brainstorming we did in my larger team about common code patterns in Windows Store apps. It's written in C#, but it just uses WinRT APIs so I trust that JavaScript devs can translate the casing and insert fully-qualified identifiers where needed.


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Making a WP weather app in an hour

I did a couple of talks – one of which was an hour-long session where I guided the attendees through the process of creating a good-looking weather app for Windows Phone. There are no shortage of weather apps in the marketplace, but it was a nice example to bring in a lot of different real-world situations like consuming JSON, using MVVM, and lots of binding stuff. The point was to show how easy it is to create an app quickly. It only took 20 lines of code and 60 lines of XAML (half of which are closing tags so don't count). The app would take around 15 minutes to make if I weren't explaining.


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Filtering with RadDataGrid for Windows 8

Telerik's RadDataGrid for Windows 8 is a flagship product: a powerful, robust, flexible tool for displaying large amounts of data conciselyRadDataGrid that is open to meaningful customer interaction. The basics of working with RadDataGrid are very simple, and you can manage the display of columns quickly and easily, as shown in this blog post. Now we'll take a look at how you can filter data programmatically. First we will look at how to hard code your filter into the XAML and then we'll look at how to create the filter dynamically in C#.


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Adding a Signature Control to the LightSwitch HTML Client

LightSwitch is all about building business solutions quickly -- defining your data models & business rules and visually creating screens with a set of built-in controls. It does all the boring plumbing so you can concentrate on the real value of your applications. But LightSwitch also allows for all sorts of customizations so you don't hit that infamous "glass ceiling". When the team set out to build the LightSwitch HTML client, they wanted to make sure that the extensibility model was super simple and in line with the way web developers build solutions today. With the Silverlight client, extension authors have to know about the guts of the LightSwitch extensibility model in order to provide easy-to-use extensions consumable by LightSwitch developers. There are over 100 (and growing) LightSwitch extensions on the Visual Studio Gallery (even a signature control). But with the HTML client we wanted to take advantage of the huge web ecosystem already out there, so adding customizations can be as easy as finding the JavaScript library you want and wiring it up to your app.


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</ span>C#,.NET,Architect,Intermediate,VS2010,.Net,Articles,Computer Tutorials, HTML, LightSwitch, LightSwitch HTML Client,Signature Control to the LightSwitch, Web Development