前言
本文主要给大家介绍了关于ios如何给view添加指定位置边框线的相关内容，分享出来供大家参考学习，下面话不多说了，来一起看看详细的介绍吧。
略微封装了一下，给view添加指定位置的边框线，其中位移枚举的使用询问了哥们儿，总算搞定；
示例代码
封装一：直接封装成了一个方法
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/// 边框类型(位移枚举) typedef ns_enum(nsinteger, uibordersidetype) { uibordersidetypeall = 0, uibordersidetypetop = 1 << 0, uibordersidetypebottom = 1 << 1, uibordersidetypeleft = 1 << 2, uibordersidetyperight = 1 << 3, }; /** 设置view指定位置的边框 @param originalview 原view @param color 边框颜色 @param borderwidth 边框宽度 @param bordertype 边框类型 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; } /// 线的路径 uibezierpath * bezierpath = [uibezierpath bezierpath]; /// 左侧 if (bordertype & uibordersidetypeleft) { /// 左侧线路径 [bezierpath movetopoint:cgpointmake(0.0f, originalview.frame.size.height)]; [bezierpath addlinetopoint:cgpointmake(0.0f, 0.0f)]; } /// 右侧 if (bordertype & uibordersidetyperight) { /// 右侧线路径 [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线路径 [bezierpath movetopoint:cgpointmake(0.0f, 0.0f)]; [bezierpath addlinetopoint:cgpointmake(originalview.frame.size.width, 0.0f)]; } /// bottom if (bordertype & uibordersidetypebottom) { /// bottom线路径 [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; /// 添加路径 shapelayer.path = bezierpath.cgpath; /// 线宽度 shapelayer.linewidth = borderwidth; [originalview.layer addsublayer:shapelayer]; return originalview; } |
封装二：封装成了类别
.h内容
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#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内容
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#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; } /// 左侧 if (bordertype & uibordersidetypeleft) { /// 左侧线路径 [self.layer addsublayer:[self addlineoriginpoint:cgpointmake(0.f, 0.f) topoint:cgpointmake(0.0f, self.frame.size.height) color:color borderwidth:borderwidth]]; } /// 右侧 if (bordertype & uibordersidetyperight) { /// 右侧线路径 [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线路径 [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线路径 [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 { /// 线的路径 uibezierpath * bezierpath = [uibezierpath bezierpath]; [bezierpath movetopoint:p0]; [bezierpath addlinetopoint:p1]; cashapelayer * shapelayer = [cashapelayer layer]; shapelayer.strokecolor = color.cgcolor; shapelayer.fillcolor = [uicolor clearcolor].cgcolor; /// 添加路径 shapelayer.path = bezierpath.cgpath; /// 线宽度 shapelayer.linewidth = borderwidth; return shapelayer; } @end |
用法：
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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：
不足之处,边框线过宽的话，交界处会有留白；
ps:注意：需要先把你的view加载在父view上，[self.view addsubview:testview]; 之后再设置边框；否则可能会不起作用的；
总结
以上就是这篇文章的全部内容了，希望本文的内容对大家的学习或者工作具有一定的参考学习价值，如果有疑问大家可以留言交流，谢谢大家对服务器之家的支持。
原文链接：http://blog.csdn.net/syg90178aw/article/details/72465473
