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Editorial Team
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Asked: 2026-06-01T01:58:10+00:00

I need to have a few buttons in my iPhone app (which may be

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I need to have a few buttons in my iPhone app (which may be then ported to iPad). I know at least 2 methods for making such buttons:
1. Using usual UIButton with an image as a background which can be drawn in any graphics editor.
2. Subclassing UIButton and implementing own drawRect: method using CoreGraphics tools.

I don’t know why, but I tend to use the second one, since it seems to be more difficult and lower performing.

Am I right thinking that when implementing the button drawing programmatically, it becomes “cross platform” so that you don’t need several icons for different resolutions?

If that is really simple icon, some bezier curve or circle filled with color. Will it still preform slower than an image-button?

And does somebody know any tool which has a graphical interface for drawing a vector image, and than converts it to the CoreGraphics code which one can paste into the drawRect: method?

Thank you.

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1 Answer

  1. Editorial Team

    Don’t worry for using drawRect. Unlike Windows, iOS caches the results into a bitmap and will only redraw it when the dimensions of the view change (which is what you actually want – since you want to scale it again).

    As for a vector app, you can use Opacity. It has an option to export the icon into CoreGraphics source code: http://likethought.com/opacity/

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