Class Extensions Explained

One of the features added to Objective-C 2.0 is Class Extensions.

If you have feature requests or bugs, http://bugreport.apple.com/ is your friend!

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How to customize MPVolumeView?

I have tried many methods to implement a regular UISlider and control the device volume, but it's all Native-C functions which results in many untraceable bugs.

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How-To Pass Data from UITableView to Detail View Controller

This tutorial show you how to display detailed information in the iOS Detail View Controller by selecting an item in the UITableView. This tutorial will display a list of items in UITableView and when you select the item, the description and picture of the corresponding object will display in the Detail View Controller.

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A crash course on Core Graphics

Core Graphics (CG), a.k.a. Quartz, is an old API included in both Cocoa and Cocoa Touch. It allows you to draw paths, shapes, shadows and gradients on the so-called graphic destinations or Graphic Contexts (we will come back later on this concept).

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How-To Pass Data from UITableView to Detail View Controller

This tutorial show you how to display detailed information in the iOS Detail View Controller by selecting an item in the UITableView. This tutorial will display a list of items in UITableView and when you select the item, the description and picture of the corresponding object will display in the Detail View Controller.

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Tutorial on How-To Increment and Decrement a Global Counter Variable

This is a tutorial to demonstrate how - to implement a globally visible integer counter to step through records of an Array. This tutorial shows how to code the IBAction button to increment and decrement a counter which can be used to retrieve an objectAtIndex in an Array;

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How-To Create an IOS 5 Twitter App

With IOS 5 SDK Apple has introduced an API to allow a developer to incorporate a Twitter interface in their apps.The API offers two interfacing options: to get information from Twitter using Twitter extensive API by implementing the TWRequest class or sending tweets to Twitter by implementing the TWTweetComposeViewController to create a sheet.

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How To Use the UIAlertView

The UIAlertView is much more that a simple alert popover, which it does very smartly. The UIAlertView can be enhanced to be used as an input form as well. You can add custom buttons and other design elements that direct users, display important information, capture information from users and more.

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How-to Use Property List Files to Store Data in iPad or iPhone App

One of vital elements of any iOS application is the info.plist file. This graph based file contains important configuration settings for your application to run normally. For instance you set the icons your app requires in the plist file. The same can be said for the storyboard, an entry must be made to tell the application which element to load first.

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How-To Develop an AVPlayer iPAD Application and AirPlay

AirPlay is not new, it was introduced with the IOS 4.3 version of the SDK. What is new is the enhancements and various other improvements that were made to the AirPlay API. One of new features that is really interesting is the abillity to interface content from your iOS on iPAD application with Apple TV 2 or mirror content from an iPad 2 device with a Apple TV 2.

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Web services en Objective-C con RestKit

Obtener la respuesta de un Web Service en Cocoa/Objective-C no es muy complicado. De hecho, podemos encontrar muchísimas librerías que nos puede ayudar con este cometido como wsdl2objc , JSONKit , csoap , sudzc... pero hay uno en especial que se diferencia del resto "RestKit".

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Custom UINavigationController Back Button

A common thing in client apps i write is custom back images, mostly because the apps have a custom UINavigationBar image, so its good to have them themed together. You can see what this looks like for this tutorial:


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