I want to have iCloud support in my application, where I can store and receive PDF files. My question is: "How to access the iCloud drive file without using UIDocumentPickerViewController." Actually, I want to have a list of custom files in my application.
I tried this code
- (void) getAllFilesIniCloud
{
queryData = [[NSMetadataQuery alloc] init];
[queryData setSearchScopes:[NSArray arrayWithObject:NSMetadataQueryAccessibleUbiquitousExternalDocumentsScope]];
NSPredicate *pred = [NSPredicate predicateWithFormat: @"%K like '*.'", NSMetadataItemFSNameKey];
[queryData setPredicate:pred];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(queryDidFinishGathering:)
name:NSMetadataQueryDidFinishGatheringNotification
object:queryData];
[queryData startQuery];
}
- (void)queryDidFinishGathering:(NSNotification *)notification
{
NSMetadataQuery *pQuery = [notification object];
[pQuery disableUpdates];
[pQuery stopQuery];
[pFilesArray removeAllObjects];
for (NSMetadataItem *item in [query results])
{
NSURL *url = [item valueForAttribute:NSMetadataItemURLKey];
NSString * name = url.lastPathComponent;
if ([[name pathExtension] isEqualToString:@"pdf"] || [[name pathExtension] isEqualToString:@"PDF"])
{
NSString *fileName = [url.absoluteString lastPathComponent];
if (url && ![pFilesArray containsObject:fileName])
{
[pFilesArray addObject:fileName];
}
}
}
[[NSNotificationCenter defaultCenter] removeObserver:self name:NSMetadataQueryDidFinishGatheringNotification object:pQuery];
queryData = nil;
[pTableView reloadData];
}
and also tried the area
NSMetadataQueryUbiquitousDataScope
NSMetadataQueryUbiquitousDocumentsScope
NSMetadataQueryAccessibleUbiquitousExternalDocumentsScope
I know this code works fine for the iCloud app directory. But if the user stores the file in iCloud on a Mac or over the Internet, my application should also enable access to this file.
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