Mobile Developer Tips » Core Services

Creating Repeating and Non-Repeating Timers

John Muchow — Tue, 28 Feb 2012 08:10:52 +0000

Creating Repeating and Non-Repeating Timers is protected by Copyright © MobileDeveloperTips.com 2008-2012 • All Rights Reserved Let do a quick run through of the basic operation of the NSTimer object. Timers are generally divided into one of two buckets, repeating and non-repeating. In either case, a timer event is fired after a specified amount of [...] Related posts:

NSClassFromString to Check for Class Availability

John Muchow — Thu, 16 Feb 2012 01:44:32 +0000

NSClassFromString to Check for Class Availability is protected by Copyright © MobileDeveloperTips.com 2008-2012 • All Rights Reserved I recently received a question about how to check if a class is available – the specific question was in regards to the TWTweetComposeViewController. There are two common ways to check for a class. First, if a feature [...] Related posts:

Remind Users to Restart Your App

John Muchow — Wed, 08 Feb 2012 08:03:02 +0000

Remind Users to Restart Your App is protected by Copyright © MobileDeveloperTips.com 2008-2012 • All Rights Reserved This tip shows you how to create a local notification that will be trigged when a user exits your application. I would recommend you use this sparingly, for example, if the user was in the middle of setting [...] Related posts:

Get List of Installed International Keyboards

John Muchow — Tue, 27 Dec 2011 07:22:24 +0000

Get List of Installed International Keyboards is protected by Copyright © MobileDeveloperTips.com 2008-2012 • All Rights Reserved The NSUserDefaults object is typically used to save/restore your application related preferences, configuration data, etc – see Write and Read User Preferences for more information. In addition to application specifics, there is a system wide default list that [...] Related posts:

iOS 5 : Look Up Definitions Using Dictionary Service

John Muchow — Mon, 12 Dec 2011 08:09:22 +0000

iOS 5 : Look Up Definitions Using Dictionary Service is protected by Copyright © MobileDeveloperTips.com 2008-2012 • All Rights Reserved With iOS 5, there is now a dictionary service that you can access to look up definitions of words. UIReferenceLibraryViewController makes it as easy as creating an instance of the class and providing a term/word [...] Related posts:

iOS 5 : Twitter Framework – Part 3 – Display List of Twitter Accounts

John Muchow — Mon, 14 Nov 2011 08:43:48 +0000

iOS 5 : Twitter Framework – Part 3 – Display List of Twitter Accounts is protected by Copyright © MobileDeveloperTips.com 2008-2012 • All Rights Reserved In the previous two iOS 5 Twitter Framework posts, I covered using TWTweetComposeViewController to display a pre-built controller for posting to Twitter and also wrote an example on how to [...] Related posts:

iOS 5 : Twitter Framework – Part 2 – Call Twitter API with TWRequest

John Muchow — Mon, 24 Oct 2011 08:23:16 +0000

iOS 5 : Twitter Framework – Part 2 – Call Twitter API with TWRequest is protected by Copyright © MobileDeveloperTips.com 2008-2012 • All Rights Reserved In the previous post on iOS 5 and the new Twitter framework, I walked through how to use TWTweetComposeViewController to display a pre-built controller for easily integrating and posting to [...] Related posts:

iOS 5 : Twitter Framework – Part 1 – Compose a Tweet with TWTweetComposeViewController

John Muchow — Mon, 17 Oct 2011 08:21:04 +0000

iOS 5 : Twitter Framework – Part 1 – Compose a Tweet with TWTweetComposeViewController is protected by Copyright © MobileDeveloperTips.com 2008-2012 • All Rights Reserved This is the first post of two on how to work with the new Twitter framework in an iOS 5 app. This post will cover the basics to create and [...] Related posts:

How to Keep the Screen from Locking

John Muchow — Mon, 25 Jul 2011 08:31:01 +0000

How to Keep the Screen from Locking is protected by Copyright © MobileDeveloperTips.com 2008-2012 • All Rights Reserved By default, iOS will lock the screen and disable the touch sensor if there are no touch events for a specified period of time. Depending on your application, there may be times that you need to keep [...] Related posts:

Using Keychain to Store Username and Password

John Muchow — Mon, 11 Jul 2011 08:09:52 +0000

Using Keychain to Store Username and Password is protected by Copyright © MobileDeveloperTips.com 2008-2012 • All Rights Reserved The keychain services on iOS provide a means to securely store content such as passwords, keys, certificates, etc. Each iOS application has a separate set of keychain items. Beginning with iOS 3.0, it is possible to share [...] Related posts: