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前言
本文主要給大家介紹了關于iOS如何給View添加指定位置邊框線的相關內容，分享出來供大家參考學習，下面話不多說了，來一起看看詳細的介紹吧。
略微封裝了一下，給View添加指定位置的邊框線，其中位移枚舉的使用詢問了哥們兒，總算搞定；
示例代碼
封裝一：直接封裝成了一個方法
/// 邊框類型(位移枚舉)
typedef NS_ENUM(NSInteger, UIBorderSideType) {
UIBorderSideTypeAll = 0,
UIBorderSideTypeTop = 1 << 0,
UIBorderSideTypeBottom = 1 << 1,
UIBorderSideTypeLeft = 1 << 2,
UIBorderSideTypeRight = 1 << 3,
};
/**
設置view指定位置的邊框
@param originalView 原view
@param color 邊框顏色
@param borderWidth 邊框寬度
@param borderType 邊框類型 例子: UIBorderSideTypeTop|UIBorderSideTypeBottom
@return view
*/
- (UIView *)borderForView:(UIView *)originalView color:(UIColor *)color borderWidth:(CGFloat)borderWidth borderType:(UIBorderSideType)borderType {
if (borderType == UIBorderSideTypeAll) {
originalView.layer.borderWidth = borderWidth;
originalView.layer.borderColor = color.CGColor;
return originalView;
}
/// 線的路徑
UIBezierPath * bezierPath = [UIBezierPath bezierPath];
/// 左側
if (borderType & UIBorderSideTypeLeft) {
/// 左側線路徑
[bezierPath moveToPoint:CGPointMake(0.0f, originalView.frame.size.height)];
[bezierPath addLineToPoint:CGPointMake(0.0f, 0.0f)];
}
/// 右側
if (borderType & UIBorderSideTypeRight) {
/// 右側線路徑
[bezierPath moveToPoint:CGPointMake(originalView.frame.size.width, 0.0f)];
[bezierPath addLineToPoint:CGPointMake( originalView.frame.size.width, originalView.frame.size.height)];
}
/// top
if (borderType & UIBorderSideTypeTop) {
/// top線路徑
[bezierPath moveToPoint:CGPointMake(0.0f, 0.0f)];
[bezierPath addLineToPoint:CGPointMake(originalView.frame.size.width, 0.0f)];
}
/// bottom
if (borderType & UIBorderSideTypeBottom) {
/// bottom線路徑
[bezierPath moveToPoint:CGPointMake(0.0f, originalView.frame.size.height)];
[bezierPath addLineToPoint:CGPointMake( originalView.frame.size.width, originalView.frame.size.height)];
}
CAShapeLayer * shapeLayer = [CAShapeLayer layer];
shapeLayer.strokeColor = color.CGColor;
shapeLayer.fillColor = [UIColor clearColor].CGColor;
/// 添加路徑
shapeLayer.path = bezierPath.CGPath;
/// 線寬度
shapeLayer.lineWidth = borderWidth;
[originalView.layer addSublayer:shapeLayer];
return originalView;
}
封裝二：封裝成了類別
.h內容
#import <UIKit/UIKit.h>
typedef NS_OPTIONS(NSUInteger, UIBorderSideType) {
UIBorderSideTypeAll = 0,
UIBorderSideTypeTop = 1 << 0,
UIBorderSideTypeBottom = 1 << 1,
UIBorderSideTypeLeft = 1 << 2,
UIBorderSideTypeRight = 1 << 3,
};
@interface UIView (BorderLine)
- (UIView *)borderForColor:(UIColor *)color borderWidth:(CGFloat)borderWidth borderType:(UIBorderSideType)borderType;
@end
.m內容
#import "UIView+BorderLine.h"
@implementation UIView (BorderLine)
- (UIView *)borderForColor:(UIColor *)color borderWidth:(CGFloat)borderWidth borderType:(UIBorderSideType)borderType {
if (borderType == UIBorderSideTypeAll) {
self.layer.borderWidth = borderWidth;
self.layer.borderColor = color.CGColor;
return self;
}
/// 左側
if (borderType & UIBorderSideTypeLeft) {
/// 左側線路徑
[self.layer addSublayer:[self addLineOriginPoint:CGPointMake(0.f, 0.f) toPoint:CGPointMake(0.0f, self.frame.size.height) color:color borderWidth:borderWidth]];
}
/// 右側
if (borderType & UIBorderSideTypeRight) {
/// 右側線路徑
[self.layer addSublayer:[self addLineOriginPoint:CGPointMake(self.frame.size.width, 0.0f) toPoint:CGPointMake( self.frame.size.width, self.frame.size.height) color:color borderWidth:borderWidth]];
}
/// top
if (borderType & UIBorderSideTypeTop) {
/// top線路徑
[self.layer addSublayer:[self addLineOriginPoint:CGPointMake(0.0f, 0.0f) toPoint:CGPointMake(self.frame.size.width, 0.0f) color:color borderWidth:borderWidth]];
}
/// bottom
if (borderType & UIBorderSideTypeBottom) {
/// bottom線路徑
[self.layer addSublayer:[self addLineOriginPoint:CGPointMake(0.0f, self.frame.size.height) toPoint:CGPointMake( self.frame.size.width, self.frame.size.height) color:color borderWidth:borderWidth]];
}
return self;
}
- (CAShapeLayer *)addLineOriginPoint:(CGPoint)p0 toPoint:(CGPoint)p1 color:(UIColor *)color borderWidth:(CGFloat)borderWidth {
/// 線的路徑
UIBezierPath * bezierPath = [UIBezierPath bezierPath];
[bezierPath moveToPoint:p0];
[bezierPath addLineToPoint:p1];
CAShapeLayer * shapeLayer = [CAShapeLayer layer];
shapeLayer.strokeColor = color.CGColor;
shapeLayer.fillColor = [UIColor clearColor].CGColor;
/// 添加路徑
shapeLayer.path = bezierPath.CGPath;
/// 線寬度
shapeLayer.lineWidth = borderWidth;
return shapeLayer;
}
@end
用法：
UIView *testView = [[UIView alloc] initWithFrame:CGRectMake(80.0f, 80.0f, 200.0f, 100.0f)]; testView.backgroundColor = [UIColor lightGrayColor]; [self.view addSubview:testView]; [self borderForView:testView color:[UIColor redColor] borderWidth:1.0f borderType:UIBorderSideTypeTop | UIBorderSideTypeBottom];
效果：
不足之處,邊框線過寬的話，交界處會有留白；
ps:注意：需要先把你的view加載在父view上，[self.view addSubview:testView]; 之后再設置邊框；否則可能會不起作用的；
總結
以上就是這篇文章的全部內容了，希望本文的內容對大家的學習或者工作具有一定的參考學習價值，如果有疑問大家可以留言交流，謝謝大家對億速云的支持。
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