? ? WKWebView* webView = [[WKWebView alloc] initWithFrame:frame];

? ? webView.backgroundColor = [UIColor whiteColor];

? ? [self.view addSubview:webView];

? ? NSURL *filePath = [NSURL fileURLWithPath:self.billFile];//注意了，本地文件不能用URLWithString,會顯示失敗

? ? [webViewloadRequest:[NSURLRequest requestWithURL:filePath]];