iOS開發(fā)之如何給View添加指定位置的邊框線詳解

更新時間：2017年10月13日 10:04:36 作者：開發(fā)仔XG

這篇文章主要給大家介紹了iOS開發(fā)之如何給View添加指定位置的邊框線的相關(guān)資料，給view加邊框很容易，重點是如何給指定邊框加邊框，文中通過示例代碼介紹的非常詳細，需要的朋友可以參考借鑒，下面來一起看看吧。

前言

本文主要給大家介紹了關(guān)于iOS如何給View添加指定位置邊框線的相關(guān)內(nèi)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(shè)置view指定位置的邊框 
 
 @param originalView 原view 
 @param color   邊框顏色 
 @param borderWidth 邊框?qū)挾?
 @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(cè) 
 if (borderType & UIBorderSideTypeLeft) { 
  /// 左側(cè)線路徑 
  [bezierPath moveToPoint:CGPointMake(0.0f, originalView.frame.size.height)]; 
  [bezierPath addLineToPoint:CGPointMake(0.0f, 0.0f)]; 
 } 
  
 /// 右側(cè) 
 if (borderType & UIBorderSideTypeRight) { 
  /// 右側(cè)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(nèi)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(nèi)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(cè) 
 if (borderType & UIBorderSideTypeLeft) { 
  /// 左側(cè)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(cè) 
 if (borderType & UIBorderSideTypeRight) { 
  /// 右側(cè)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：