Hey everyone. I'm using the Objective-C version of the API.
I've copied the code to the example project almost exactly, but am
getting this error every time I try to upload a picture:
"failedWithStatus:400 data:Photo data must not be empty.".
Here's my code:
- (void)uploadToPicasa
{
// make a new entry for the photo
GDataEntryPhoto *newEntry = [GDataEntryPhoto photoEntry];
// set a title, description, and timestamp
[newEntry setTitleWithString:@"Title!"];
[newEntry setPhotoDescriptionWithString:@"Description!"];
[newEntry setTimestamp:[GDataPhotoTimestamp timestampWithDate:
[NSDate date]]];
// attach the NSData and set the MIME type for the photo
UIImage *earth_image = [UIImage imageNamed:@"earth.jpg"];
NSData *earth_data = UIImageJPEGRepresentation(earth_image, 1.0);
[newEntry setPhotoData:earth_data];
NSString *mimeType = @"image/jpeg";
[newEntry setPhotoMIMEType:mimeType];
// the slug is just the upload file's filename
[newEntry setUploadSlug:@"earth.jpg"];
// make service tickets call back into our upload progress
selector
GDataServiceGooglePhotos *service = [self googlePhotosService];
SEL progressSel =
@selector(ticket:hasDeliveredByteCount:ofTotalByteCount:);
[service setServiceUploadProgressSelector:progressSel];
// Get URL for Picasa
NSURL *uploadURL = [GDataServiceGooglePhotos
photoFeedURLForUserID:@"CORRECT_USERNAME"
albumID:nil
albumName:nil
photoID:nil
kind:nil
access:nil];
// insert the entry into the album feed
GDataServiceTicket *ticket;
ticket = [service fetchEntryByInsertingEntry:newEntry
forFeedURL:uploadURL
delegate:self
didFinishSelector:@selector(addPhotoTicket:finishedWithEntry:error:)];
// no need for future tickets to monitor progress
[service setServiceUploadProgressSelector:nil];
}
// progress callback
- (void)ticket:(GDataServiceTicket *)ticket
hasDeliveredByteCount:(unsigned long long)numberOfBytesRead
ofTotalByteCount:(unsigned long long)dataLength {
NSLog([NSString stringWithFormat:@"%d", numberOfBytesRead /
dataLength]);
}
// photo add callback
- (void)addPhotoTicket:(GDataServiceTicket *)ticket
finishedWithEntry:(GDataEntryPhoto *)photoEntry
error:(NSError *)error {
if (error == nil) {
NSLog(@"SHOULD BE UPLOADED MAYBE");
} else {
NSLog(@"THERE WAS AN ERROR");
}
}
- (GDataServiceGooglePhotos *)googlePhotosService {
static GDataServiceGooglePhotos* service = nil;
if (!service) {
service = [[GDataServiceGooglePhotos alloc] init];
[service setShouldCacheResponseData:YES];
[service setServiceShouldFollowNextLinks:YES];
}
// update the username/password each time the service is requested
NSString *username = @"CORRECT_USERNAME";
NSString *password = @"CORRECT_PASSWORD";
if ([username length] && [password length]) {
[service setUserCredentialsWithUsername:username
password:password];
} else {
[service setUserCredentialsWithUsername:nil
password:nil];
}
return service;
}
I used a breakpoint to confirm that NSData is not nil, and is the
image in question, so I'm not sure what "failedWithStatus:400
data:Photo data must not be empty." could mean. Please help!
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