Comments on: iPhone development – UIImage with round corners

By: Jas

Jas — Tue, 22 Nov 2011 17:02:02 +0000

Thats works great. searched for sometime but this helps me a lot
Thanks for such a wonderful post

By: Thomas

Thomas — Sun, 27 Feb 2011 12:52:05 +0000

Great code, but it scales down retina graphics to regular resolution.

By: Three20…and it’s gone… « Pro9ram's Blog

Three20…and it’s gone… « Pro9ram's Blog — Wed, 23 Feb 2011 14:14:09 +0000

[...] So, I’ve binned off Three20 and done some ‘real’ coding instead. The really useful def TTIMAGE has gone, in its place is the rather smart HJCache iPhone image caching library (tip for you – create HJObjManager as a singleton so you can access it from anywhere - nice!). The launcher has been replaced by my version which is just a UIScrollView with UIImageViews plonked on (including some excellent Quartz shadow effects and iPhone icons with rounded corners). [...]

By: bob

bob — Sat, 08 Jan 2011 03:19:11 +0000

DON’T DO [img release]!!!!!

This violates the Memory Management Rules:
http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/MemoryMgmt/Articles/mmRules.html#//apple_ref/doc/uid/20000994-BAJHFBGH

Line in bold: “You only release or autorelease objects you own.”

You do not own “img” (you didn’t create or retain it), so you cannot release it. Period.

By: Sergio

Sergio — Tue, 21 Sep 2010 22:37:51 +0000

That’s great! Thanks to everybody!

By: Joe

Joe — Tue, 29 Jun 2010 11:57:30 +0000

eBuildy, that works too (and for any UIView to boot). Beware though, I hear it’s relatively slow – accent on relatively – so if you want rounded corner images in a UITableView, the scrolling might get a bit chunky.

http://three20.pypt.lt/uiimageview-rounded-corners

By: tdog09

tdog09 — Mon, 28 Jun 2010 21:12:36 +0000

much obliged, this helps ALOT!

By: eBuildy

eBuildy — Sun, 20 Jun 2010 23:13:11 +0000

Why you dont use the layer?

imageView.layer.cornerRadius = 5.0;
imageView.layer.masksToBounds = YES;

eBuildy, french iPhone specialits

By: Ben Kim

Ben Kim — Sat, 10 Apr 2010 16:10:13 +0000

The file works well however in some instances the image corners are black. Since my tableviewcell is white, you can see the black corners. In other instances, the corners are transparent. The black is drawn in a drawRect method. Would that make a difference? What needs to be changed in your class to guarantee clear corners?

By: haptic

haptic — Sat, 20 Mar 2010 22:02:43 +0000

Hei Björn, Excellent, thank you very much indeed!

@Michael: “Nice work, but you _must_ remove the [img release] from that method.”

Thank you for this important hint, the scrolling speed in a table view without the [img release] is much (!) higher.