How to draw a rounded rectangle in Core Graphics / Quartz 2D?

iphone quartz-graphics
dontWatchMyProfile picture dontWatchMyProfile · May 14, 2010 · Viewed 79.5k times · Source

I need to draw an outline for a rounded rectangle. I know I can make lines and arcs, but maybe there is also a function for rounded rects?

Answer

Timo Bruck picture Timo Bruck · Jan 25, 2012

Instead of making your own path out of lines and arcs, you can use

[UIBezierPath bezierPathWithRoundedRect:cornerRadius:]

or

[UIBezierPath bezierPathWithRoundedRect:byRoundingCorners:cornerRadii:]

(the second one lets you specify which corners are rounded)

Available in iOS 3.2 or later.

Related questions

How do I draw a line on the iPhone?

I am a beginner at iPhone programming, and would like to draw a line to the phone screen for the purpose of study using Quartz and UIKit. How do I start drawing?

Read More
iPhone smooth sketch drawing algorithm

I am working on a sketching app on the iPhone. I got it working but not pretty as seen here And I am looking for any suggestion to smooth the drawing Basically, what I did is when user places a …

Read More
iPhone - Draw transparent rectangle on UIView to reveal view beneath

I currently have two UIViews: one of a red background and the other blue. The blue view is a subview of the red view. What I would like to do is be able to "cut" out rectangles on the blue …

Read More