Problem in cropping the UIImage using CGContext?

Question

I developing the simple UIApplication in which i want to crop the UIImage (in .jpg format) with help of CGContext. The developed code till now as follows,

CGImageRef

Answer 1

The context you create to draw the image has the same size that the original image. That's why they have the same size.

If you don't want to re-invent the wheel, take a look at the TouchCode project on Google Code. You will find UIImage categories that do the job (see UIImage_ThumbnailExtensions.m).