Common ways to set rounded corners in iOS

First approach: The most common approach, but with the worst performance

Uiimageview *imageview = [[Uiimageview alloc]initwithframe:cgrectmake (100, 100, 100, 100)];

Imageview.image = [UIImage imagenamed:@ "late ant. jpg"];

You only need to set the layer's two properties

Set rounded corners

ImageView.layer.cornerRadius = IMAGEVIEW.FRAME.SIZE.WIDTH/2;

Cut out the extra parts

ImageView.layer.masksToBounds = YES;

[Self.view Addsubview:imageview];

The second method: using Bezier Uibezierpath and the core graphics frame to draw a rounded corner, the performance is much higher than the first (some people say 100 times, specifically how much I do not know)

Uiimageview *imageview = [[Uiimageview alloc]initwithframe:cgrectmake (100, 100, 100, 100)];

Imageview.image = [UIImage imagenamed:@ "late ant. jpg"];

Start drawing on ImageView

Uigraphicsbeginimagecontextwithoptions (ImageView.bounds.size, NO, 1.0);

Draw a circular chart using Bezier curves

[[Uibezierpath BezierPathWithRoundedRect:imageView.bounds cornerRadius:imageView.frame.size.width] addclip];

[ImageView DrawRect:imageView.bounds];

Imageview.image = Uigraphicsgetimagefromcurrentimagecontext ();

Finish drawing

Uigraphicsendimagecontext ();

[Self.view Addsubview:imageview];

Third method: Use Cashapelayer and uibezierpath to set rounded corners

First you need to import <AVFoundation/AVFoundation.h>

The memory consumption is minimal, and the rendering is fast.

Uiimageview *imageview = [[Uiimageview alloc]initwithframe:cgrectmake (100, 100, 100, 100)];

Imageview.image = [UIImage imagenamed:@ "late ant. jpg"];

Uibezierpath *maskpath = [Uibezierpath bezierPathWithRoundedRect:imageView.bounds byroundingcorners: Uirectcornerallcorners CornerRadii:imageView.bounds.size];

Cashapelayer *masklayer = [[Cashapelayer alloc]init];

Set size

Masklayer.frame = Imageview.bounds;

Set graphic appearance

Masklayer.path = Maskpath.cgpath;

ImageView.layer.mask = Masklayer;

[Self.view Addsubview:imageview];

Common ways to set rounded corners in iOS