从iCloud Drive下载图片iOS目标C

我经历了很多链接，但没有为我工作。 我需要做的是获取所有iCloud Drive文件和下载图像。 我成功地使用下面的代码获取所有文件

- (void)presentDocumentPicker { NSArray *documentTypes = @[@"public.content", @"public.text", @"public.source-code ", @"public.image", @"public.audiovisual-content", @"com.adobe.pdf", @"com.apple.keynote.key", @"com.microsoft.word.doc", @"com.microsoft.excel.xls", @"com.microsoft.powerpoint.ppt"]; UIDocumentPickerViewController *documentPickerViewController = [[UIDocumentPickerViewController alloc] initWithDocumentTypes:documentTypes inMode:UIDocumentPickerModeOpen]; documentPickerViewController.delegate = self; [self presentViewController:documentPickerViewController animated:YES completion:nil]; } #pragma mark - UIDocumentPickerDelegate - (void)documentPicker:(UIDocumentPickerViewController *)controller didPickDocumentAtURL:(NSURL *)url { self.documentURL = url; QLPreviewController *previewController = [[QLPreviewController alloc] init]; previewController.delegate = self; previewController.dataSource = self; [self.navigationController pushViewController:previewController animated:YES]; } 

现在我不知道如何进一步下载图像。

Answer 1

我能够使用这个下载图像

  #pragma mark - UIDocumentPickerDelegate - (void)documentPicker:(UIDocumentPickerViewController *)controller didPickDocumentAtURL:(NSURL *)url { self.documentURL = url; NSNumber *isDownloadedValue = NULL; BOOL success = [url getResourceValue:&isDownloadedValue forKey: NSURLUbiquitousItemIsDownloadingKey error:NULL]; if (success && ![isDownloadedValue boolValue]) { [[NSFileManager defaultManager]startDownloadingUbiquitousItemAtURL:url error:nil]; // load image from Ubiquity Documents directory NSData *imageData = [NSData dataWithContentsOfURL:url]; UIImage * image = [UIImage imageWithData:imageData]; } QLPreviewController *previewController = [[QLPreviewController alloc] init]; previewController.delegate = self; previewController.dataSource = self; [self.navigationController pushViewController:previewController animated:YES]; }