iOS開發 給View新增指定位置的邊框線

略微封裝了一下，給view新增指定位置的邊框線，其中位移列舉的使用詢問了哥們兒，總算搞定；

封裝一：直接封裝成了乙個方法

/// 邊框型別(位移列舉)

typedef ns_enum(nsinteger, uibordersidetype) ;
/** 設定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 邊框型別 例子: uibordersidetypetop|uibordersidetypebottom
@return view
*/- (uiview *)borderforview:(uiview *)originalview color:(uicolor *)color borderwidth:(cgfloat)borderwidth bordertype:(uibordersidetype)bordertype 
/// 線的路徑
uibezierpath * bezierpath = [uibezierpath bezierpath];
/// 左側
if (bordertype & uibordersidetypeleft) 
/// 右側
if (bordertype & uibordersidetyperight) 
/// top
if (bordertype & uibordersidetypetop) 
/// bottom
if (bordertype & uibordersidetypebottom) 
cashapelayer * shapelayer = [cashapelayer layer];
shapelayer.strokecolor = color.cgcolor;
shapelayer.fillcolor = [uicolor clearcolor].cgcolor;
/// 新增路徑
shapelayer.path = bezierpath.cgpath;
/// 線寬度
shapelayer.linewidth = borderwidth;
[originalview.layer addsublayer:shapelayer];
return originalview;
}

.h內容

#import typedef ns_options(nsuinteger, uibordersidetype) ;

@inte***ce uiview (borderline)
- (uiview *)borderforcolor:(uicolor *)color borderwidth:(cgfloat)borderwidth bordertype:(uibordersidetype)bordertype;
@end

#import "uiview+borderline.h"

@implementation uiview (borderline)
- (uiview *)borderforcolor:(uicolor *)color borderwidth:(cgfloat)borderwidth bordertype:(uibordersidetype)bordertype 
/// 左側
if (bordertype & uibordersidetypeleft) 
/// 右側
if (bordertype & uibordersidetyperight) 
/// top
if (bordertype & uibordersidetypetop) 
/// bottom
if (bordertype & uibordersidetypebottom) 
return self;
}- (cashapelayer *)addlineoriginpoint:(cgpoint)p0 topoint:(cgpoint)p1 color:(uicolor *)color borderwidth:(cgfloat)borderwidth 
@end

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];

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載入在父view上，[self.view addsubview:testview]; 之後再設定邊框；否則可能會不起作用的；

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