Three methods for setting rounded corners for iOS and three methods for ios rounded corners

Three methods for setting rounded corners for iOS and three methods for ios rounded corners

Method 1: Set layer attributes.

This is the simplest one, but it affects performance. It is rarely used in normal development.

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UIImageView *imageView = [[UIImageView alloc]initWithFrame:CGRectMake(100, 100, 100, 100)];// You only need to set two attributes of the layer.// Set the rounded cornerimageView.layer.cornerRadius = imageView.frame.size.width / 2;// Cut out the excess partsimageView.layer.masksToBounds = YES;[self.view addSubview:imageView];

Method 2: Use the UIBezierPath and Core Graphics framework of the besell curve to draw a rounded corner.

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UIImageView *imageView = [[UIImageView alloc]initWithFrame:CGRectMake(100, 100, 100, 100)]; imageView.image = [UIImage imageNamed:@"1"]; // Start drawing the imageView UIGraphicsBeginImageContextWithOptions(imageView.bounds.size, NO, 1.0); // Draw a circular chart using the besell Curve [[UIBezierPath bezierPathWithRoundedRect:imageView.bounds cornerRadius:imageView.frame.size.width] addClip]; [imageView drawRect:imageView.bounds]; imageView.image = UIGraphicsGetImageFromCurrentImageContext();  // End drawing UIGraphicsEndImageContext(); [self.view addSubview:imageView];

 

Method 3: Use CAShapeLayer and UIBezierPath to set the rounded corner.

#import "ViewController.h"#import <AVFoundation/AVFoundation.h>@interface ViewController ()@end@implementation ViewController- (void)viewDidLoad {        [super viewDidLoad];        UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(100, 100, 200, 100)];    imageView.image = [UIImage imageNamed:@"1"];    UIBezierPath *maskPath = [UIBezierPath bezierPathWithRoundedRect:imageView.bounds byRoundingCorners:UIRectCornerBottomLeft | UIRectCornerTopLeft cornerRadii:CGSizeMake(25, 5)];    CAShapeLayer *maskLayer = [[CAShapeLayer alloc]init];    maskLayer.frame = imageView.bounds;    maskLayer.path = maskPath.CGPath;    imageView.layer.mask = maskLayer;    [self.view addSubview:imageView];}

Among the three methods, the third is the best, with the least memory consumption and fast rendering.

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