iOS-画形状的view

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#import <UIKit/UIKit.h>#import <QuartzCore/QuartzCore.h>@interface UIView (Shape)- (void)setShape:(CGPathRef)shape;@end

#import "UIView+Shape.h"@implementation UIView (Shape)- (void)setShape:(CGPathRef)shape{    if (shape == nil) {        self.layer.mask = nil;    }        CAShapeLayer* maskLayer = [CAShapeLayer layer];    maskLayer.path = shape;    self.layer.mask = maskLayer;}@end
@interface UIBezierPath (BasicShape)
+ (UIBezierPath *)cutCorner:(CGRect)originalFrame length:(CGFloat)length;@end
#import "UIBezierPath+BasicShape.h"@implementation UIBezierPath (BasicShape)+ (UIBezierPath *)cutCorner:(CGRect)originalFrame length:(CGFloat)length{    CGRect rect = originalFrame;    UIBezierPath *bezierPath = [UIBezierPath bezierPath];    [bezierPath moveToPoint:CGPointMake(0, length)];    [bezierPath addLineToPoint:CGPointMake(length, 0)];    [bezierPath addLineToPoint:CGPointMake(rect.size.width - length, 0)];    [bezierPath addLineToPoint:CGPointMake(rect.size.width, length)];    [bezierPath addLineToPoint:CGPointMake(rect.size.width, rect.size.height - length)];    [bezierPath addLineToPoint:CGPointMake(rect.size.width - length, rect.size.height)];    [bezierPath addLineToPoint:CGPointMake(length, rect.size.height)];    [bezierPath addLineToPoint:CGPointMake(0, rect.size.height - length)];    [bezierPath closePath];    return bezierPath;}@end
使用方法：在[UIView viewWillAppear:]方法中加入下面代码
[self.view setShape:[UIBezierPath cutCorner:self.view.bounds length:40].CGPath];

效果：

让自定义 Button 响应自定义 Shape 内的点击事件
#import <UIKit/UIKit.h>#import "UIView+Shape.h"#import "UIBezierPath+BasicShape.h"@interface RFButton : UIButton{    CGPathRef path;}@end
///  RFButton.m//  ChristApp////  Created by Haozhen Li on 13-12-6.////#import "RFButton.h"@implementation RFButton- (id)initWithFrame:(CGRect)frame{    self = [super initWithFrame:frame];    if (self) {        // Initialization code    }    return self;}- (void)setShape:(CGPathRef)shape{    [super setShape:shape];    path = shape;}- (BOOL)pointInside:(CGPoint)point withEvent:(UIEvent *)event{    if (CGPathIsEmpty(path)) {        return YES;    }    //判断触发点是否在规定的 Shape 内    if (CGPathContainsPoint(path, nil, point, nil)) {        return YES;    }    return NO;}@end

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