How to access Asset Catalog (images) after downloaded through NSBundleResourceRequest? - on-demand-resources

Question

I cannot access images inside an asset catalog after it's been downloaded through NSBundleResourceRequest (on demand resource).
My code, say the image set name is "snow_4" with on demand resource tag "tag1"
NSBundleResourceRequest* resourceRequest = [[NSBundleResourceRequest alloc] initWithTags:[NSSet setWithObjects:#"tag1", nil]];
[resourceRequest conditionallyBeginAccessingResourcesWithCompletionHandler:
^(BOOL resourcesAvailable){
// if resource is not available download it
if (!resourcesAvailable) {
[resourceRequest beginAccessingResourcesWithCompletionHandler:
^(NSError * __nullable error){
if(!error){
UIImage* image = [UIImage imageNamed:#"snow_4"]; // image is null
}
}];
}else{
UIImage* image = [UIImage imageNamed:#"snow_4"]; // image is null
}
}];
Below is my Disk Report, please note that [UIImage imageNamed:#"snow_3"] (marked as 'In Use') returns a correct object but not images that are marked as 'Downloaded'
Appreciating your time and help!
Thanks,
Mars

Answer 1

Make sure NSBundleResourceRequest is not released early. Try to let NSBundleResourceRequest variable globally,
and access the image with UIImage(named: "xxx", in: self.bundleReq.bundle, compatibleWith: nil)

Answer 2

do this
image = [UIImage imageNamaed:#"snow_4" inBundle:[resourceRequest bundle]];

Answer 3

let tags = NSSet(array: ["tag1","tag2"])
let resourceRequest = NSBundleResourceRequest(tags: tags as! Set<String>)
resourceRequest.conditionallyBeginAccessingResourcesWithCompletionHandler {(resourcesAvailable: Bool) -> Void in
if resourcesAvailable {
// Do something with the resources
} else {
resourceRequest.beginAccessingResourcesWithCompletionHandler {(err: NSError?) -> Void in
if let error = err {
print("Error: \(error)")
} else {
// Do something with the resources
}
}
}
}