{"id":663,"date":"2023-05-30T14:39:14","date_gmt":"2023-05-30T06:39:14","guid":{"rendered":"https:\/\/www.zhidianwl.com\/zhidian\/?p=663"},"modified":"2023-05-30T14:39:14","modified_gmt":"2023-05-30T06:39:14","slug":"%e5%9c%a8%e7%ba%bf%e7%ad%be%e5%90%8dios%e5%ae%9e%e7%8e%b0%e5%8e%9f%e7%90%86%e6%98%af%e4%bb%80%e4%b9%88%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.zhidianwl.com\/zhidian\/2023\/663\/","title":{"rendered":"\u5728\u7ebf\u7b7e\u540dios\u5b9e\u73b0\u539f\u7406\u662f\u4ec0\u4e48\uff1f"},"content":{"rendered":"
\u5728\u79fb\u52a8\u4e92\u8054\u7f51\u65f6\u4ee3\uff0c\u8d8a\u6765\u8d8a\u591a\u7684\u4e1a\u52a1\u9700\u8981\u5728\u7ebf\u7b7e\u540d\u529f\u80fd\uff0c\u5176\u4e2d\u5305\u62ec\u5408\u540c\u7b7e\u7f72\u3001\u6388\u6743\u8ba4\u8bc1\u7b49\u3002\u800c\u5728iOS\u7cfb\u7edf\u4e2d\uff0c\u4e5f\u63d0\u4f9b\u4e86\u4e00\u79cd\u5feb\u901f\u5b9e\u73b0\u5728\u7ebf\u7b7e\u540d\u7684\u65b9\u6cd5\uff0c\u4e0b\u9762\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5176\u539f\u7406\u548c\u4f7f\u7528\u65b9\u5f0f\u3002<\/p>\n
\u4e00\u3001\u539f\u7406<\/p>\n
iOS\u7cfb\u7edf\u4e2d\u7684\u5728\u7ebf\u7b7e\u540d\u529f\u80fd\u4e3b\u8981\u57fa\u4e8eCore Graphics\u6846\u67b6\u7684\u624b\u5199\u7b14\u753b\u8bc6\u522b\u6280\u672f\uff0c\u5176\u539f\u7406\u53ef\u4ee5\u7b80\u8ff0\u4e3a\u4ee5\u4e0b\u51e0\u4e2a\u6b65\u9aa4\uff1a<\/p>\n
1.\u83b7\u53d6\u624b\u5199\u7b14\u753b\uff1a\u901a\u8fc7UIResponder\u7c7b\u4e2d\u7684touch\u4e8b\u4ef6\u83b7\u53d6\u7528\u6237\u624b\u5199\u7b14\u753b\u7684\u5750\u6807\u70b9\uff0c\u5e76\u5c06\u5176\u4fdd\u5b58\u5728\u4e00\u4e2a\u6570\u7ec4\u4e2d\uff1b<\/p>\n
2.\u7ed8\u5236\u624b\u5199\u7b14\u753b\uff1a\u5728UIView\u4e2d\u91cd\u5199drawRect\u65b9\u6cd5\uff0c\u5c06\u4fdd\u5b58\u7684\u624b\u5199\u7b14\u753b\u5750\u6807\u70b9\u8fde\u6210\u7ebf\u6761\uff0c\u5f62\u6210\u624b\u5199\u7b14\u753b\u7684\u56fe\u5f62\uff1b<\/p>\n
3.\u8bc6\u522b\u624b\u5199\u7b14\u753b\uff1a\u901a\u8fc7Core Graphics\u6846\u67b6\u4e2d\u7684UIGraphicsGetImageFromCurrentImageContext\u65b9\u6cd5\u5c06\u624b\u5199\u7b14\u753b\u8f6c\u6362\u6210\u4e00\u5f20\u56fe\u7247\uff0c\u5e76\u5c06\u5176\u4f20\u9012\u7ed9Core ML\u6846\u67b6\u4e2d\u7684\u624b\u5199\u7b14\u753b\u8bc6\u522b\u6a21\u578b\u8fdb\u884c\u8bc6\u522b\uff1b<\/p>\n
4.\u8fd4\u56de\u8bc6\u522b\u7ed3\u679c\uff1a\u5c06\u8bc6\u522b\u7ed3\u679c\u8fd4\u56de\u7ed9\u5e94\u7528\u7a0b\u5e8f\uff0c\u5b9e\u73b0\u5728\u7ebf\u7b7e\u540d\u529f\u80fd\u3002<\/p>\n
\u4e8c\u3001\u4f7f\u7528\u65b9\u5f0f<\/p>\n
\u5728iOS\u7cfb\u7edf\u4e2d\u5b9e\u73b0\u5728\u7ebf\u7b7e\u540d\u529f\u80fd\u7684\u65b9\u5f0f\u6709\u591a\u79cd\uff0c\u4e0b\u9762\u4ecb\u7ecd\u5176\u4e2d\u4e00\u79cd\u6bd4\u8f83\u7b80\u5355\u7684\u5b9e\u73b0\u65b9\u5f0f\u3002<\/p>\n
1.\u521b\u5efa\u4e00\u4e2aUIView\u5b50\u7c7b\uff0c\u7528\u4e8e\u7ed8\u5236\u624b\u5199\u7b14\u753b\uff1b<\/p>\n
2.\u5728UIView\u5b50\u7c7b\u4e2d\u6dfb\u52a0\u4ee5\u4e0b\u4ee3\u7801\uff0c\u5b9e\u73b0\u624b\u5199\u7b14\u753b\u7684\u7ed8\u5236\uff1a<\/p>\n
“`<\/p>\n
– (void)drawRect<\/p>\n
:(CGRect)rect {<\/p>\n CGContextRef context = UIGraphicsGetCurrentContext();<\/p>\n CGContextSetLineWidth(context, 2.0);<\/p>\n CGContextSetStrokeColorWithColor(context, [UIColor blackColor].CGColor);<\/p>\n CGContextSetLineCap(context, kCGLineCapRound);<\/p>\n for (int i=0; i<\/p>\n CGPoint startPoint = [[self.points objectAtIndex:i] CGPointValue];<\/p>\n CGPoint endPoint = [[self.points objectAtIndex:i+1] CGPointValue];<\/p>\n CGContextBeginPath(context);<\/p>\n<\/figure>\n<\/p>\n