在Swift IOS的​​webView顶部添加边距

Question

我正在从服务器下载文件并显示在我的ios设备中。文件类型可以是图像，pdf等任何类型，并且都可以正常加载。现在的问题是，文件或图像的某些部分隐藏在页面标题的后面。我想在文件加载后在文件顶部添加边距。

我为显示文件编写的代码：

private void getProducts() {
    //stock variables
    List<Integer> stockValue = new ArrayList<>();
    stockValue.add(0);
    int stockCriteria = 0;
    int stockType = 1;
    //price variables
    List<Integer> priceValue = new ArrayList<>();
    priceValue.add(0);
    int priceCriteria = 0;
    int priceType = 1;
    //product name
    List<String> productValue = new ArrayList<>();
    int productCriteria = 0;
    int productType = 5;
    productValue.add("floral");

    //setting the values of the json send as a body to the server
    Filters filters = new Filters();
    filters.setPrice(new Price(priceCriteria, priceType, priceValue));
    filters.setStockQuantity(new StockQuantity(stockCriteria, stockType, stockValue));
    //removed product name for test
    //filters.setProductName(new ProductName(productCriteria, productType, productValue));

    ProductAPIBodyRequest productAPIBodyRequest = new ProductAPIBodyRequest();
    productAPIBodyRequest.setFilters(filters);
    ProductAPIBodyRequest[] productAPIBodyRequests = {productAPIBodyRequest};

    Call<JsonObject> products = marketApiCalls.getProducts(take, page, productAPIBodyRequests);
    products.enqueue(new Callback<JsonObject>() {
        @Override
        public void onResponse(Call<JsonObject> call, Response<JsonObject> response) {
            if (!response.isSuccessful()) {
                return;
            }
            JsonObject body = response.body();
            FullProductModel fullProductModel = gson.fromJson(body, FullProductModel.class);
            for (int i = 0; i < fullProductModel.getData().size(); i++) {
                com.twoverte.models.product.full_product.ResultData resultData = fullProductModel.getData().get(i).getResultData();
                MiniProductModel model = new MiniProductModel(
                        resultData.getId(),
                        resultData.getImageUrl(),
                        resultData.getProductName(),
                        resultData.getShortDescription(),
                        resultData.getFullDescription(),
                        resultData.getVendorName(),
                        resultData.getVendorUrl(),
                        resultData.getUrl(),
                        resultData.getPictureList(),
                        resultData.getSku(),
                        resultData.getVendorImageUrl(),
                        resultData.getStockQuantity(),
                        resultData.getFavoritesCount(),
                        resultData.getPrice()
                );
                miniProductModelList.add(model);
            }
            productsAdapter.notifyDataSetChanged();
            Log.d("allProducts", miniProductModelList.toString());
        }

        @Override
        public void onFailure(Call<JsonObject> call, Throwable t) {
            t.getMessage();
        }
    });
}

我已经在Class中创建了webView属性，

func openFile(file:String) {
    let myBlog = file
    let url = NSURL(string: myBlog)
    let request = NSURLRequest(url: url! as URL)
    webView.load(request as URLRequest)
    self.view.addSubview(webView)
    let pdfVC = UIViewController()
    pdfVC.view.addSubview(webView)
    pdfVC.title = "File"
    self.navigationController?.pushViewController(pdfVC, animated: true)
    self.navigationController!.navigationBar.tintColor = colors.whiteColor
}

在viewDidLoad（）中，我写了：

var webView : WKWebView!

我得到的结果：

图像的某些部分位于标题的后面。我尝试了链接add margins in swift中给出的各种解决方案，但没有任何效果。

Answer 1

我的建议是在需要显示它的控制器中创建WKWebView的实例，在本例中为pdfVC

可以有模型，例如：

enum FileType {
    case image(fileURL: URL)
    case pdf(fileURL: URL)
}

创建FileViewController的情况，并为其分配文件类型

func openFile(file:String) {
    let pdfViewController = FileViewController()
    pdfVC.fileType = FileType.pdf(fileURL: URL(string: "https://www.google.com")!) // example
    pdfVC.title = "File"
    navigationController?.pushViewController(pdfVC, animated: true)
}

  

在您需要显示文件的VC内：

通过这种方式，即使您拥有navigationBar，您也不会遇到navigationBar和topMargin

class FileViewController: UIViewController {

    var fileType: FileType!

    override func viewDidLoad() {
        super.viewDidLoad()

        var urlRequest: URLRequest!
        switch fileType {
        case .image(let url), .pdf(let url):
            urlRequest = URLRequest(url: url)
        @unknown default:
            break
        }

        let webView = WKWebView(frame: view.frame)
        webView.load(urlRequest)
        self.view = webView
    }
}

希望这对您有帮助！

Answer 2

使用边界代替框架

webView = WKWebView(frame: self.view.Bounds)