ios 加载本地html css文件 ps:css和html必须在同一文件夹下面

 NSString *path = [[NSBundle mainBundle] bundlePath];

    NSURL *baseURL = [NSURL fileURLWithPath:path];

    NSString * htmlPath = [[NSBundle mainBundle] pathForResource:@"reg"

                                                          ofType:@"html"];

    NSString * htmlCont = [NSString stringWithContentsOfFile:htmlPath

                                                    encoding:NSUTF8StringEncoding

                                                       error:nil];

    [self.webView loadHTMLString:htmlCont baseURL:baseURL];