定向圆角定向圆角

通过此方法可以设置任何控件(UIView的子类)的任意一个方向的圆角
效果如图:

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(左上角圆角)
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(上边两个角圆角) ![Uploading Snip20160116_13_330721.png . . .] 上边两个角是圆角的输入框
下边两个角是圆角的输入框

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Snip20160116_15.png
当然,你也可以其他方法实现,比如用一个四个角圆角的view作为背景,然后里面装两个透明的textfield,中间画一条线,但是这种方法稍微有点耗内存,定向圆角是直接对layer进行操作,更加轻量级,所以建议用定向圆角的方法
代码:
如果使用系统的API是办不到的,只能同时设置四个角的圆角,这里我讲介绍一种办法,可以设置定向圆角
使用方法:
//1.导入头文件

#import "ZHRoundView.h"``` //2.让你的view/label/button...继承自ZHRoundView //3.只需要一句代码就可搞定

//设置左上角圆角
self.myView.roundType = ZHRoundTypeLeft;
//设置上面两个角是圆角
//self.myView.roundType = ZHRoundTypeTop;

如果想绘制边框

view.borderWidth = 2;
view.borderColor = [UIColor blackColor].CGColor;
view.cornerRadius = 10;

源码: 头文件:ZHRoundView.h

import typedef enum{
ZHRoundTypeTop = 0,
ZHRoundTypeLeft,
ZHRoundTypeRight,
ZHRoundTypeBottom,
ZHRoundTypeAll,
ZHRoundTypeNone
}ZHRoundType;
@interface ZHRoundView : UIView
/**

圆角类型
*/
@property(nonatomic,assign)ZHRoundType roundType;

/**

边框宽度
*/
@property (nonatomic ,assign) CGFloat borderWidth;

/**

边框颜色
/
@property (nonatomic ,assign) CGColorRef borderColor;
/*
圆角的半径
*/
@property (nonatomic ,assign) CGFloat cornerRadius;
@end

.m文件 ZHRoundView.m

//
// ZHRoundView.m
// 核心动画
//
// Created by 演员新之助 on 15/12/29.
// Copyright ? 2015年演员新之助. All rights reserved.
//
import "ZHRoundView.h" @interface ZHRoundView()
@end
@implementation ZHRoundView
/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.

(void)drawRect:(CGRect)rect {

// Drawing code
}
*/
-(instancetype)initWithFrame:(CGRect)frame
{
[self setup];
return [super initWithFrame:frame];
}
-(void)awakeFromNib
{
[self setup];
}
/**

初始化
*/
-(void)setup{
//默认cornerRadius为10
_cornerRadius = 10;
}

/**

设置圆角方向(设置边框颜色和宽度应放在此方法之前)
@param roundType 定向圆角的方向
*/
-(void)setRoundType:(ZHRoundType)roundType{
_roundType = roundType;

self.layer.mask = nil; UIRectCornercorners; switch (roundType) {case ZHRoundTypeLeft:corners =UIRectCornerTopLeft; break; case ZHRoundTypeRight:corners = UIRectCornerBottomRight | UIRectCornerTopRight; break; case ZHRoundTypeBottom:corners = UIRectCornerBottomLeft | UIRectCornerBottomRight; break; case ZHRoundTypeTop:corners = UIRectCornerTopRight | UIRectCornerTopLeft; break; case ZHRoundTypeNone:corners = UIRectCornerBottomLeft & UIRectCornerBottomRight; break; case ZHRoundTypeAll:corners = UIRectCornerAllCorners; break; default:break; }UIBezierPath *maskPath = [UIBezierPath bezierPathWithRoundedRect:self.bounds byRoundingCorners:corners cornerRadii:CGSizeMake(_cornerRadius, _cornerRadius)]; CAShapeLayer *maskLayer = [CAShapeLayer layer]; maskLayer.frame= self.bounds; maskLayer.path= maskPath.CGPath; self.layer.mask= maskLayer; //绘制边框 CAShapeLayer *strokeLayer = [CAShapeLayer layer]; strokeLayer.path = maskPath.CGPath; strokeLayer.fillColor = [UIColor clearColor].CGColor; strokeLayer.strokeColor = _borderColor; strokeLayer.lineWidth = _borderWidth; // Transparent view that will contain the stroke layer UIView *strokeView = [[UIView alloc] initWithFrame:self.bounds]; strokeView.userInteractionEnabled = NO; // in case your container view contains controls [strokeView.layer addSublayer:strokeLayer]; // configure and add any subviews to the container view// stroke view goes in last, above all the subviews [self addSubview:strokeView];

}
【定向圆角】@end