how to get total count of photos from iphone photoLibrary.? - iphone

Question

i want to get the count of photos in photoLibrary. Currently, i'am able to get the photoes from photoLibrary and add to myApp's Document directry ONE BY ONE. But what i want is, save all the photos from photoLibrary to Document directry of myApp ALL AT ONCE. Thats why i need the count of photoes in photoLibrary. I've used UIImagePickerControllerSourceTypePhotoLibrary to retrieve the photoes from iPhone photoLibrary.
Any help would be appreaciated..
thanks in advance....

Answer 1

Use ALAssetsLibrary for this:
int imgCount = 0;
self.assetsLibrary = [[ALAssetsLibrary alloc] init];
dispatch_queue_t dispatchQueue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
dispatch_async(dispatchQueue, ^(void) {
[self.assetsLibrary enumerateGroupsWithTypes:ALAssetsGroupAll usingBlock:^(ALAssetsGroup *group, BOOL *stop) {
[group enumerateAssetsUsingBlock:^(ALAsset *result, NSUInteger index,
__block BOOL foundThePhoto = NO;
if (foundThePhoto){ *stop = YES;
}
BOOL *stop) {
/* Get the asset type */
NSString *assetType = [result valueForProperty:ALAssetPropertyType];
if ([assetType isEqualToString:ALAssetTypePhoto]){ NSLog(#"This is a photo asset");
foundThePhoto = YES; *stop = YES;
/* Get the asset's representation object */
ALAssetRepresentation *assetRepresentation = [result defaultRepresentation];
/* We need the scale and orientation to be able to construct a properly oriented and scaled UIImage out of the representation object */
CGFloat imageScale = [assetRepresentation scale];
UIImageOrientation imageOrientation = (UIImageOrientation)[assetRepresentation orientation];
dispatch_async(dispatch_get_main_queue(), ^(void) {
CGImageRef imageReference = [assetRepresentation fullResolutionImage];
/* Construct the image now */
UIImage *image = [[UIImage alloc] initWithCGImage:imageReference
scale:imageScale orientation:imageOrientation];
//Write image to doument directory
imgCount ++;
}
});
} failureBlock:^(NSError *error) {
} }];
NSLog(#"Failed to enumerate the asset groups."); }];
})
NSLog(#"Total Image Count %d",imgCount);

Answer 2

The code block below counts all videos and photos:
__block int videoCount = 0;
__block int photoCount = 0;
ALAssetsLibrary *assetLibrary = [[ALAssetsLibrary alloc]init];
[assetLibrary
enumerateGroupsWithTypes:ALAssetsGroupAll
usingBlock:^(ALAssetsGroup *group, BOOL *stop) {
if (group == nil) {
// enumeration complete
return;
}
int total = group.numberOfAssets;
[group setAssetsFilter:[ALAssetsFilter allVideos]];
int groupVideoCount = group.numberOfAssets;
videoCount += groupVideoCount;
photoCount += total - groupVideoCount;
}
failureBlock:^(NSError *error) {
// Handle error
}];