用UIBezierPath數組對UIView進行鏤空處理，uibezierpathuiview

用UIBezierPath數組對UIView進行鏤空處理，uibezierpathuiview

用UIBezierPath數組對UIView進行鏤空處理

 

效果

 

源碼

////  CutOutClearView.h//  CutOutMaskView////  Created by YouXianMing on 16/7/8.//  Copyright © 2016年 YouXianMing. All rights reserved.//#import <UIKit/UIKit.h>@interface CutOutClearView : UIView@property (nonatomic, strong) UIColor  *fillColor;@property (nonatomic, strong) NSArray  <UIBezierPath *>  *paths;@end

////  CutOutClearView.m//  CutOutMaskView////  Created by YouXianMing on 16/7/8.//  Copyright © 2016年 YouXianMing. All rights reserved.//#import "CutOutClearView.h"@implementation CutOutClearView- (instancetype)initWithFrame:(CGRect)frame {        if (self = [super initWithFrame:frame]) {            self.fillColor       = [UIColor whiteColor];        self.backgroundColor = [UIColor clearColor];        self.opaque          = NO;    }        return self;}- (void)drawRect:(CGRect)rect {    [super drawRect:rect];        [self.fillColor setFill];    UIRectFill(rect);        CGContextRef context = UIGraphicsGetCurrentContext();        for (UIBezierPath *path in self.paths) {                CGContextAddPath(context, path.CGPath);        CGContextSetBlendMode(context, kCGBlendModeClear);        CGContextFillPath(context);    }}@end

////  ViewController.m//  CutOutClearView////  Created by YouXianMing on 16/7/8.//  Copyright © 2016年 YouXianMing. All rights reserved.//#import "ViewController.h"#import "CutOutClearView.h"@interface ViewController ()@end@implementation ViewController- (void)viewDidLoad {        [super viewDidLoad];        UIImageView *imageView = [[UIImageView alloc] initWithFrame:self.view.bounds];    imageView.image        = [UIImage imageNamed:@"bg.png"];    imageView.contentMode  = UIViewContentModeScaleAspectFill;    [self.view addSubview:imageView];        NSMutableArray *paths = [NSMutableArray array];        {        UIBezierPath* bezierPath = [UIBezierPath bezierPath];        [bezierPath moveToPoint: CGPointMake(57.04, 31.19)];        [bezierPath addLineToPoint: CGPointMake(125.55, 12.5)];        [bezierPath addLineToPoint: CGPointMake(185.5, 91)];        [bezierPath addLineToPoint: CGPointMake(57.04, 169.5)];        [bezierPath addLineToPoint: CGPointMake(18.5, 91)];        [bezierPath addLineToPoint: CGPointMake(57.04, 31.19)];        [bezierPath closePath];        [paths addObject:bezierPath];    }        {        UIBezierPath* bezierPath = [UIBezierPath bezierPath];        [bezierPath moveToPoint: CGPointMake(46.5, 245.5)];        [bezierPath addLineToPoint: CGPointMake(137.5, 272.5)];        [bezierPath addLineToPoint: CGPointMake(137.5, 211.5)];        [bezierPath addLineToPoint: CGPointMake(90.5, 196.5)];        [bezierPath addLineToPoint: CGPointMake(46.5, 211.5)];        [bezierPath addLineToPoint: CGPointMake(46.5, 245.5)];        [bezierPath closePath];        [paths addObject:bezierPath];    }        CutOutClearView *cutOutView = [[CutOutClearView alloc] initWithFrame:self.view.bounds];    cutOutView.fillColor        = [UIColor redColor];    cutOutView.paths            = paths;//    [self.view addSubview:cutOutView];    imageView.maskView = cutOutView;}@end

 

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