Loading image from url ios 8 objective c - objective-c

Question

i´m trying to obtain the imagen from this url[#"file:///var/mobile/Media/DCIM/100APPLE/IMG_0158.JPG"], but i can´t.
Always is nil.
this is my code:
NSData *data = [NSData dataWithContentsOfURL: #"file:///var/mobile/Media/DCIM/100APPLE/IMG_0158.JPG"];
UIImage *image = [UIImage imageWithData:data];
self.pruebaTmp.image = image;
i obtain the url with this code:
if (asset) {
// get photo info from this asset
PHImageRequestOptions * imageRequestOptions = [[PHImageRequestOptions alloc] init];
imageRequestOptions.synchronous = YES;
[[PHImageManager defaultManager]
requestImageDataForAsset:asset
options:imageRequestOptions
resultHandler:^(NSData *imageData, NSString *dataUTI,
UIImageOrientation orientation,
NSDictionary *info)
{
NSURL *path = [info objectForKey:#"PHImageFileURLKey"];
//asignamos el path de la imágen seleccionada en galeria
self.pathImagen = path;
}];
}
if someone could help i would be very grateful, because i can´t load the image with the url obtained.

Answer 1

you can`t not get UIimage or metadata from that url.
you can get UIImage from local Identifier of access
PHFetchResult *savedAssets = [PHAsset fetchAssetsWithLocalIdentifiers:#[localIdentifier] options:nil];
[savedAssets enumerateObjectsUsingBlock:^(PHAsset *asset, NSUInteger idx, BOOL *stop) {
//this gets called for every asset from its localIdentifier you saved
//PHImageRequestOptionsDeliveryModeHighQualityFormat
PHImageRequestOptions * imageRequestOptions = [[PHImageRequestOptions alloc] init];
imageRequestOptions.synchronous = NO;
imageRequestOptions.deliveryMode = PHImageRequestOptionsResizeModeFast;
imageRequestOptions.resizeMode = PHImageRequestOptionsResizeModeFast;
[[PHImageManager defaultManager]requestImageForAsset:asset targetSize:PHImageManagerMaximumSize contentMode:PHImageContentModeAspectFill options:imageRequestOptions resultHandler:^(UIImage * _Nullable result, NSDictionary * _Nullable info) {
NSLog(#"get image from result");
if (result) {
}
}];
imageRequestOptions = nil;
}];