Xcode cropping a picture

Goal: crop a circular picture

Steps:

1. Load the picture you want to intercept

2. Set the Circle clipping area

2.1 Creating a circular path

2.2 Set the path to the cropping area

3. Drawing pictures

4. Get the picture from the context

5. Close the context

Code:

-(void) viewdidload {    [super viewdidload];        Self.view.backgroundColor = [Uicolor colorwithwhite:0.819 alpha:1.000];    0. Load the picture to be intercepted    UIImage *image = [UIImage imagenamed:@ "High Circle"];    1. Gets (opens) The graphics context (the graphics context is a square)    uigraphicsbeginimagecontextwithoptions (Cgsizemake (Image.size.width, Image.size.width), NO, 0);        2. Set the circle clipping area, tangent to    the picture//2.1 create the path of the circle    uibezierpath *path = [Uibezierpath bezierpathwithroundedrect:cgrectmake (0, 0, Image.size.width, image.size.width) CORNERRADIUS:IMAGE.SIZE.WIDTH/2];    2.2 Set the path to the clipping area    [path Addclip];        3. Draw the picture    [Image Drawatpoint:cgpointzero];        4. Get the picture from the context    UIImage *clipedimage = Uigraphicsgetimagefromcurrentimagecontext ();        5. Close the context    uigraphicsendimagecontext ();        Self.imageView.image = Clipedimage;        }

Original:

After cropping as:

Xcode cropping a picture