iOS Developer Tips

Quiz for iPhone Developer job Interview

Appstudio is always looking for talented programmers to join our team. Interviewing prospective employees is a difficult task for any job, but it takes special skill to separate the programming guru from the script-kiddies. Often we are looking at young people without college degrees. They are smart, talented and motivated, but without a degree it can be…

Tips for Reading Apple’s iOS Documentation

Apple iOS documentation is pretty good as far as documentation goes, but it does have many problems and quirks that you need to watch out for if you want to be an expert in iOS. After you have used it a while it can be a great resource, and is the first place I look when I have…

Converting an int to a Hebrew String

For Open Talmud I need a way to convert a page number into a Hebrew numerals which is more familiar to those who study talmud.
There is nothing great about the code. Just thought it would be a nice thing to share.
-(NSString*) HebrewStringForInt:(int) number{
if (number ==15) {
…

iPhone Documentation Errors

For any iPhone or iPad developer the official Apple documentation is a fundamental tool in development. While the documentation is not very easy for beginners to use (it rarely has examples) it is thorough and precise. Because of how much developers rely on the documentation it is very important that they get it right. So it really bothers…

NSCalendar’s quirks with regards to weeks

A former colleague of mine recently asked me a NSDate related question:

I’m struggling with a problem that should be simple.
The problem is how do I get the NSDate that represents “nearest Sunday at 00:00:00″ (for example, in the Gregorian calendar).
So this is what I had in mind:
1. Create NSDateComponents from against the gregorian calendar. Ask…

UIGestureRecognizer Cancelled State

UIGestureRecognizers were a great improvement to iOS starting in version 3.2. For those of you who had to deal with the touchesBegan: and touchesMoved: method of UIResponder you need no explanation. For the noobs out there, they provide a common interface for standard touch events and give a simple API to access what it means. For rotations…