Stack Exchange

David Rönnqvist

Stockholm, Sweden

ronnqvi.st

Age: 25

I'm a graphics and animations development enthusiast from Stockholm, Sweden.

I fell in love with Mac and iOS development with the introduction of OS X 10.5 Leopard and the iPhone SDK.

When I'm not writing code I practice and teach kung fu.

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Top Questions
Top Answers
48
Converting all text to lower case in Objective-c
stackoverflow.com

25
iPhone Core Animation - Drawing a Circle
stackoverflow.com

12
How to create custom exception in objective c?
stackoverflow.com

10
Showing an image inside map annotation
stackoverflow.com

10
Reason to use ivars vs properties in objective c
stackoverflow.com

10
iOS: Simultaneous scale and 3D rotation animation
stackoverflow.com

10
Create a border around UIImageView using 8 images
stackoverflow.com

9
Draw part of a circle
stackoverflow.com

9
Draw segments from a circle or donut
stackoverflow.com

8
How to make a UITextview and a UIImageView scrollable
stackoverflow.com

8
How to apply CAGradientLayer as mask of another CALayer?
stackoverflow.com

8
strong and weak for local variable, I dont understand
stackoverflow.com

7
iPhone: Drawing a curved line until it becomes a circle animation
stackoverflow.com

7
UIView animateWithDuration doesn't animate cornerRadius variation
stackoverflow.com

7
How can I create an CABasicAnimation for multiple properties?
stackoverflow.com

6
iPhone Core Data crash with ARC
stackoverflow.com

6
Core Animation: Frame Rate
stackoverflow.com

6
Different behavior of __weak on NSURL and NSString
stackoverflow.com

6
CAKeyframeAnimation using UIImages not working
stackoverflow.com

6
iOS: Why can't I set nil to NSDictionary value?
stackoverflow.com

6
guaranteed delivery for uploads after network reconnect, even if my app is not running
stackoverflow.com

6
Difference between [NSMutableData data] and [[NSMutableData alloc]init]
stackoverflow.com

6
iOS 6: UITableView Edit and Autoresizing
stackoverflow.com

6
CoreGraphics Quartz drawing shadow on transparent alpha path
stackoverflow.com

6
NSPredicate filtered by year moth day
stackoverflow.com

6
Why is my code breaking? (NSMutableArray issues)
stackoverflow.com

5
UIWebView, determine if page has loaded
stackoverflow.com

5
iphone : remove CALayer when animation stop, CALayer flash before disappear
stackoverflow.com

5
Quartz : Getting the diff images of two images
stackoverflow.com

5
UIView animation issue, when try no animatate images
stackoverflow.com

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