How to put photos (PHAsset) in an iPhone to Dropbox?

Question

I am trying to put my photos in my iPhone with Dropbox API, but when I use this code :

                mimeType = @".png";
            [[PHImageManager defaultManager]requestImageForAsset:lastAsset targetSize:size contentMode:PHImageContentModeAspectFit options:options resultHandler:^(UIImage* result, NSDictionary* info){

                fileName = [lastAsset.creationDate.description substringWithRange:NSMakeRange(0, lastAsset.creationDate.description.length-6)];
                data = UIImagePNGRepresentation(imageView.image);
                NSString* imagePath = [[info objectForKey:@"PHImageFileURLKey"]absoluteString];
                NSString* fImagePath = [imagePath substringFromIndex:7];

                [dbRestClient uploadFile:[NSString stringWithFormat:@"%@%@",fileName,mimeType] toPath:@"/" withParentRev:nil fromPath:fImagePath];
            }];

I have an error which it tells to me "files does not exist : /var/mobile/Media/DCIM/101APPLE/IMG_1080.PNG"

I don't understand why ?! What is the correct path to retrieve and store my videos in Dropbox ?

Answer 1

Without seeing more code, the best I can come up with is that it's related to one of two things:

Bad paths somewhere after you declare fileName; try:

fileName = [lastAsset.creationDate.description substringWithRange:NSMakeRange(0, lastAsset.creationDate.description.length-6)];
NSString* imagePath = [[info objectForKey:@"PHImageFileURLKey"]absoluteString];
[dbRestClient uploadFile:fileName toPath:@"/" withParentRev:nil fromPath:imagePath];

Or, if that doesn't work, then it might be related to the immutability of PHAsset. Try instead copying to a temp folder:

fileName = [lastAsset.creationDate.description substringWithRange:NSMakeRange(0, lastAsset.creationDate.description.length-6)];
NSString *tmp = [NSTemporaryDirectory() stringByAppendingPathComponent:fileName];
NSData *data = UIImageJPGRepresentation(result);
[data writeToFile:tmp atomically:YES]; // you might need UIImagePNGRepresentation here as well
[self.dropboxClient uploadFile:fileName toPath:destDir withParentRev:nil fromPath:tmp];