1.首先將資源文件放在同一文件夾(html,css,js等)

2.將資源文件夾添加到工程目錄時注意選擇Create folder references(即藍色文件夾)

相關(guān)代碼：

WKWebViewConfiguration *config = [WKWebViewConfiguration new];

[config.preferences setValue:@YES forKey:@"allowFileAccessFromFileURLs"];

?self.webView = [[WKWebView alloc] initWithFrame:self.view.bounds configuration:config];

NSString *filePath = [[NSBundle mainBundle] pathForResource:@"index" ofType:@"html" inDirectory:@"fileName"];

[self.webView loadFileURL:[NSURL fileURLWithPath:filePath] allowingReadAccessToURL:[NSURL fileURLWithPath:[NSBundle mainBundle].bundlePath]];