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How To Download a File Only If It Has Been Updated 5 Mar 2011 | 12:15 am
ou should always avoid downloading data over a wireless network whenever possible. If there is a file on a server that your app needs and it’s infrequently updated, then a good approach would be to ca...
List of features for Apple iOS 4.3 4 Mar 2011 | 10:33 pm
Along with the the iPad 2, Apple is also going to release iOS 4.3 on March 11. Here are some of the features you can expect: A Configurable Slide Switch for IPad With iOS 4.3 you will be able to dec...
iOS Advanced Programming: Event Kit Framework 4 Mar 2011 | 10:10 pm
In today’s tutorial we are going to cover the Event Kit Framework and how to add an event to the calendar. The Event Kit Framework is the way Apple wants us to display or create a calendar entry. With...
Code Sign Errors: profile doesn’t match any valid certificate/private key pair in the default keychain 4 Mar 2011 | 08:14 pm
In order to audit and test the app on device before app submission you would have to build the app with valid matching certificate and provisioning profile. Possible causes to trigger a Code Sign erro...
Xcode Program received signal: “EXC_BAD_ACCESS” 4 Mar 2011 | 08:11 pm
Program received signal: “EXC_BAD_ACCESS” This error occurs in device not simulator. Possible Errors: access protected or non-existent memory space as result of a bad pointer access memory without...
iPhone Server Communication 4 Mar 2011 | 07:30 pm
We can communicate in many ways with server. One way is using JSON, this is explained as below: 1. Starting Communication 2. Start receiving data 3. Get data in chunks 4. After getting complete .....
Changing UIView’s Coordinate System 4 Mar 2011 | 07:26 pm
Some times in our app we want to change the coordinate system of UIView, mostly when we change the orientation of iPhone like Landscape Right or left, So that time, coordinate system as well as appear...
UIImageView AnimationImages Memory Leak Mistry Solved 4 Mar 2011 | 07:23 pm
We all know that to do animation using UIImageView, we load images in the NSArray and then set it to animationImages property of UIImageView and then call function startAnimating. But when you try to...
UIImage Tips… 4 Mar 2011 | 07:18 pm
There are several things which we need to keep in mind when we use UIImage as follows: 1. UIImage has 4 class methods to create its autorelease instance and 3 instance methods to load image. 2. When...
Objective C class: Simple Image Cache singleton 4 Mar 2011 | 07:13 pm
While working on an iPhone application which makes use of remote data and remote image assets, I realised I needed an object that could quickly and easily cache remote images in the app’s local sandbo...
