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xamarin.ios UidocumentPickerView控制器

xamarin.ios xamarin.forms

jbtamares · 技术社区 · 6 年前

我有一个关于iOS文档选取器的问题。

我已包含iCloud容器/已启用iCloud以进行配置。还添加了 Cloudkit Xamarin.ios本身的要求。但是,启动弹出菜单以显示iOS的浏览文件菜单时出现问题。

var documentPicker = new UIDocumentPickerViewController(allowedUtis, UIDocumentPickerMode.Import);

documentPicker.DidPickDocument += DocumentPicker_DidPickDocument;
documentPicker.WasCancelled += DocumentPicker_WasCancelled;
documentPicker.DidPickDocumentAtUrls += DocumentPicker_DidPickDocumentAtUrls;
documentPicker.WasCancelled += DocumentPicker_WasCancelled;

private void DocumentPicker_DidPickDocumentAtUrls(object sender, UIDocumentPickedAtUrlsEventArgs e)
{
     var control = (UIDocumentPickerViewController)sender;
     foreach (var url in e.Urls)
         DocumentPicker_DidPickDocument(control, new UIDocumentPickedEventArgs(url));

         control.Dispose();
}

似乎didpickdocument/didpickdocumentaturls事件无法启动,除了设置我的设置、授权、info.plist之外,还有其他需要的选项/权限可以让我使用iOS的文档选取器吗?

1 回复 | 直到 6 年前

FreakyAli 6 年前

嗯,我最近做的,它在我的Xamarin表单应用程序中工作得很好:

private void ShowDocsPicker()
    {
        try
        {
            var docPicker = new UIDocumentPickerViewController(new string[]
            { UTType.Data, UTType.Content }, UIDocumentPickerMode.Import);
            docPicker.WasCancelled += DocPicker_WasCancelled;
            docPicker.DidPickDocumentAtUrls += DocPicker_DidPickDocumentAtUrls;
            var _currentViewController = GetCurrentUIController();
            if (_currentViewController != null)
                _currentViewController.PresentViewController(docPicker, true, null);
        }
        catch (Exception ex)
        {
          //Exception Logging
        }
    }

获取当前的uiviewController,如下所示:

  public UIViewController GetCurrentUIController()
    {
        UIViewController viewController;
        var window = UIApplication.SharedApplication.KeyWindow;
        if (window == null)
        {
            return null;
        }

        if (window.RootViewController.PresentedViewController == null)
        {
            window = UIApplication.SharedApplication.Windows
                     .First(i => i.RootViewController != null &&
                                 i.RootViewController.GetType().FullName
                                 .Contains(typeof(Xamarin.Forms.Platform.iOS.Platform).FullName));
        }

        viewController = window.RootViewController;

        while (viewController.PresentedViewController != null)
        {
            viewController = viewController.PresentedViewController;
        }

        return viewController;
    }

然后像这样添加文档选择事件:

 private void DocPicker_DidPickDocumentAtUrls(object sender, UIDocumentPickedAtUrlsEventArgs e)
    {
     //Action to perform on document pick
    }

如果有查询,则还原。