问题
I have gone through many links, but nothing worked for me. All i need to do is fetch all iCloud Drive files and download images. I succeeded fetching all files using below code
- (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];
}
now i don't know how to proceed further to download image.
回答1:
i was able to download images using this
#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];
}
来源:https://stackoverflow.com/questions/42809076/download-image-from-icloud-drive-ios-objective-c