Downloading from dropbox on Login click

Downloading from dropbox on Login click

I am using core api for Dropbox. I have to download files from Dropbox.
When i clicked Import Button login window popup,after successful login it
goes to AppDelegates handleOpenUrl method. But i want to download acton on
that click so i have written following methods in viewController from
where i want to download
-(void)ImportFromDropbox{
[[self restClient] loadMetadata:@"/"];
} - (void)restClient:(DBRestClient *)client loadedMetadata:(DBMetadata
*)metadata { if (metadata.isDirectory) { NSLog(@"Folder '%@' contains:",
metadata.path); for (DBMetadata *file in metadata.contents) { NSLog(@"
%@", file.filename); } } } - (void)restClient:(DBRestClient *)client
loadMetadataFailedWithError:(NSError *)error {
NSLog(@"Error loading metadata: %@", error);
}
And called ImportFromDropbox from appDelegate,my problem is that from
appDelegate ImportFromDropbox get Called but loadedMetadata or
loadMetadataFailedWithError doest get called,so What should i do to
download from login click? please help me.Thank you.