Read images from a iphone album using ALAssetsLibrary - iphone

I am trying to write a method that read assets from a album I am getting all images from all album using ALAsset, my question is how can I customize this method to read images from myAlbum
/**
* This method is used to get all images from myAlbum
* folder in device if getAlbumImages is set to 1
* else loads all images from devices library
*/
-(void)readImages:(int)getAlbumImages
{
imageArray = [[NSArray alloc] init];
mutableArray =[[NSMutableArray alloc]init];
NSMutableArray* assetURLDictionaries = [[NSMutableArray alloc] init];
library = [[ALAssetsLibrary alloc] init];
if(getFolderImages == 1) {
// Load images from Shareaflash folder
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0]; // Get documents folder
NSString *documentdataPath = [documentsDirectory stringByAppendingPathComponent:#"myFolder"];
NSLog(#"documentdataPath %#",documentdataPath);
} else {
// Load all images
}
void (^assetEnumerator)( ALAsset *, NSUInteger, BOOL *) = ^(ALAsset *result, NSUInteger index, BOOL *stop) {
if(result != nil) {
if([[result valueForProperty:ALAssetPropertyType] isEqualToString:ALAssetTypePhoto]) {
[assetURLDictionaries addObject:[result valueForProperty:ALAssetPropertyURLs]];
NSURL *url = (NSURL*) [[result defaultRepresentation]url];
[library assetForURL:url resultBlock:^(ALAsset *asset) {
[mutableArray addObject:asset];
if ([mutableArray count]==count)
{
imageArray =[[NSArray alloc] initWithArray:mutableArray];
[self allPhotosCollected:imageArray];
}
}
failureBlock:^(NSError *error){ NSLog(#"operation was not successfull!"); } ];
}
}
};
NSMutableArray *assetGroups = [[NSMutableArray alloc] init];
void (^ assetGroupEnumerator) ( ALAssetsGroup *, BOOL *)= ^(ALAssetsGroup *group, BOOL *stop) {
if(group != nil) {
[group enumerateAssetsUsingBlock:assetEnumerator];
[assetGroups addObject:group];
count=[group numberOfAssets];
}
};
assetGroups = [[NSMutableArray alloc] init];
[library enumerateGroupsWithTypes:ALAssetsGroupAll
usingBlock:assetGroupEnumerator
failureBlock:^(NSError *error) { NSLog(#"There is an error"); }];
}
How can I use documentdataPath to load assets

When you call enumerateGroupsWithTypes, in the block, check the asset group name (valueForProperty:). Then, instead of adding all of the asset groups to your assetGroups list you can only add the appropriate ones.

Related

Get all of the pictures from an iPhone photoLibrary in an array using AssetsLibrary framework?

I want to get all of the pictures from photoLibrary. I would prefer a method or example that I can use directly.
//View Controller header(.h) file..
#import <UIKit/UIKit.h>
#include <AssetsLibrary/AssetsLibrary.h>
#interface getPhotoLibViewController : UIViewController
{
ALAssetsLibrary *library;
NSArray *imageArray;
NSMutableArray *mutableArray;
}
-(void)allPhotosCollected:(NSArray*)imgArray;
#end
//implementation file
declare global count variable as
static int count=0;
#implementation getPhotoLibViewController
-(void)getAllPictures
{
imageArray=[[NSArray alloc] init];
mutableArray =[[NSMutableArray alloc]init];
NSMutableArray* assetURLDictionaries = [[NSMutableArray alloc] init];
library = [[ALAssetsLibrary alloc] init];
void (^assetEnumerator)( ALAsset *, NSUInteger, BOOL *) = ^(ALAsset *result, NSUInteger index, BOOL *stop) {
if(result != nil) {
if([[result valueForProperty:ALAssetPropertyType] isEqualToString:ALAssetTypePhoto]) {
[assetURLDictionaries addObject:[result valueForProperty:ALAssetPropertyURLs]];
NSURL *url= (NSURL*) [[result defaultRepresentation]url];
[library assetForURL:url
resultBlock:^(ALAsset *asset) {
[mutableArray addObject:[UIImage imageWithCGImage:[[asset defaultRepresentation] fullScreenImage]]];
if ([mutableArray count]==count)
{
imageArray=[[NSArray alloc] initWithArray:mutableArray];
[self allPhotosCollected:imageArray];
}
}
failureBlock:^(NSError *error){ NSLog(#"operation was not successfull!"); } ];
}
}
};
NSMutableArray *assetGroups = [[NSMutableArray alloc] init];
void (^ assetGroupEnumerator) ( ALAssetsGroup *, BOOL *)= ^(ALAssetsGroup *group, BOOL *stop) {
if(group != nil) {
[group enumerateAssetsUsingBlock:assetEnumerator];
[assetGroups addObject:group];
count=[group numberOfAssets];
}
};
assetGroups = [[NSMutableArray alloc] init];
[library enumerateGroupsWithTypes:ALAssetsGroupAll
usingBlock:assetGroupEnumerator
failureBlock:^(NSError *error) {NSLog(#"There is an error");}];
}
-(void)allPhotosCollected:(NSArray*)imgArray
{
//write your code here after getting all the photos from library...
NSLog(#"all pictures are %#",imgArray);
}
#end
Use getAllPicture method to get photos from photo library.
OR You can have a look at this blog http://mutiselectimagepicker.blogspot.in/2014/08/imageselect-to-allow-multiple-selection.html
Since ALAssetsLibrary is deprecated now and Photo Framework is new one. I made my own function in Objective C to get all photos from Camera Roll and store in NSArray and displayed in my Collectionview
NSArray *imageArray;
NSMutableArray *mutableArray;
-(void)getAllPhotosFromCamera
{
imageArray=[[NSArray alloc] init];
mutableArray =[[NSMutableArray alloc]init];
PHImageRequestOptions *requestOptions = [[PHImageRequestOptions alloc] init];
requestOptions.resizeMode = PHImageRequestOptionsResizeModeExact;
requestOptions.deliveryMode = PHImageRequestOptionsDeliveryModeHighQualityFormat;
requestOptions.synchronous = true;
PHFetchResult *result = [PHAsset fetchAssetsWithMediaType:PHAssetMediaTypeImage options:nil];
NSLog(#"%d",(int)result.count);
PHImageManager *manager = [PHImageManager defaultManager];
NSMutableArray *images = [NSMutableArray arrayWithCapacity:[result count]];
// assets contains PHAsset objects.
__block UIImage *ima;
for (PHAsset *asset in result) {
// Do something with the asset
[manager requestImageForAsset:asset
targetSize:PHImageManagerMaximumSize
contentMode:PHImageContentModeDefault
options:requestOptions
resultHandler:^void(UIImage *image, NSDictionary *info) {
ima = image;
[images addObject:ima];
}];
}
imageArray = [images copy]; // You can direct use NSMutuable Array images
}
-(void)getFromGallery:(BOOL )IsImages
{
if(self.csCollectionsArray != nil)
[self.csCollectionsArray removeAllObjects];
__block NSMutableDictionary *date = [[NSMutableDictionary alloc] init];
ALAssetsLibrary *csAssetsLibrary = [[ALAssetsLibrary alloc] init];
NSUInteger groupTypes = ALAssetsGroupAlbum | ALAssetsGroupEvent | ALAssetsGroupFaces | ALAssetsGroupSavedPhotos;
[csAssetsLibrary enumerateGroupsWithTypes:groupTypes usingBlock:^(ALAssetsGroup *group, BOOL *stop)
{
if([group numberOfAssets] > 0)
{
if(IsImages)
[group setAssetsFilter:[ALAssetsFilter allPhotos]];
else
[group setAssetsFilter:[ALAssetsFilter allVideos]];
[group enumerateAssetsWithOptions:NSEnumerationReverse usingBlock:^(ALAsset *asset, NSUInteger index, BOOL *stop)
{
if(asset)
{ //1.fetching all assets from device library
//2.Add all fetched assests from library
[date setObject:asset forKey:[asset valueForProperty:ALAssetPropertyDate]];
}
}];
}
else
{ NSLog(#"---> load table -------->");
if(date != nil && date.count > 0)
{ //3.Sort using date by ascending order and moved to dictionary to array
NSArray *sortedKeys = [[date allKeys] sortedArrayUsingSelector: #selector(compare:)];
for (NSString *key in sortedKeys)
[self.csCollectionsArray addObject: [date objectForKey:key]];
//4.Load images into collection view after fetching all datas
[self reloadCollectionView];
if(self.csCollectionView != nil)
[self.csCollectionView scrollToItemAtIndexPath:[NSIndexPath indexPathForItem:([self.csCollectionsArray count] - 1) inSection:0] atScrollPosition:UICollectionViewScrollPositionBottom animated:YES];
}
date = nil;
}
}failureBlock:^(NSError *error)
{
if((csCollectionsArray == nil || [csCollectionsArray count] == 0))
{
ALAuthorizationStatus status = [ALAssetsLibrary authorizationStatus]; if(status != ALAuthorizationStatusAuthorized)
{
[self showAlertAndCloseUploaderView:#"You can just go to \"Settings\" app (General -> Reset -> Reset Location & Privacy) then come again and click ok when the alert dialog is showing for enable the permission to access the photo library"];
}
}
}];
}
You can use this below method to fetch all images or videos from assets library in ios.
Use this assetslibrary framework(must)
NOTE:- #import
-(void)getFromGallery:(BOOL )IsImages
{
if(self.csCollectionsArray != nil)
[self.csCollectionsArray removeAllObjects];
__block NSMutableDictionary *date = [[NSMutableDictionary alloc] init];
ALAssetsLibrary *csAssetsLibrary = [[ALAssetsLibrary alloc] init];
NSUInteger groupTypes = ALAssetsGroupAlbum | ALAssetsGroupEvent | ALAssetsGroupFaces | ALAssetsGroupSavedPhotos;
[csAssetsLibrary enumerateGroupsWithTypes:groupTypes usingBlock:^(ALAssetsGroup *group, BOOL *stop)
{
if([group numberOfAssets] > 0)
{
if(IsImages)
[group setAssetsFilter:[ALAssetsFilter allPhotos]];
else
[group setAssetsFilter:[ALAssetsFilter allVideos]];
[group enumerateAssetsWithOptions:NSEnumerationReverse usingBlock:^(ALAsset *asset, NSUInteger index, BOOL *stop)
{
if(asset)
{ //1.fetching all assets from device library
//2.Add all fetched assests from library
[date setObject:asset forKey:[asset valueForProperty:ALAssetPropertyDate]];
}
}];
}
else
{ NSLog(#"---> load table -------->");
if(date != nil && date.count > 0)
{ //3.Sort using date by ascending order and moved to dictionary to array
NSArray *sortedKeys = [[date allKeys] sortedArrayUsingSelector: #selector(compare:)];
for (NSString *key in sortedKeys)
[self.csCollectionsArray addObject: [date objectForKey:key]];
//4.Load images into collection view after fetching all datas
[self reloadCollectionView];
if(self.csCollectionView != nil)
[self.csCollectionView scrollToItemAtIndexPath:[NSIndexPath indexPathForItem:([self.csCollectionsArray count] - 1) inSection:0] atScrollPosition:UICollectionViewScrollPositionBottom animated:YES];
}
date = nil;
}
}failureBlock:^(NSError *error)
{
if((csCollectionsArray == nil || [csCollectionsArray count] == 0))
{
ALAuthorizationStatus status = [ALAssetsLibrary authorizationStatus]; if(status != ALAuthorizationStatusAuthorized)
{
[self showAlertAndCloseUploaderView:#"You can just go to \"Settings\" app (General -> Reset -> Reset Location & Privacy) then come again and click ok when the alert dialog is showing for enable the permission to access the photo library"];
}
}
}];
}

To Get all Images from Photo Library in iphone

I trying to retrive images from Photo Library & display in my app using AssetsLibrary.
I got the URL path of photos but I don't know how to get photo through it.
My Code is as Follow:
NSMutableArray* assetURLDictionaries = [[NSMutableArray alloc] init];
void (^assetEnumerator)( ALAsset *, NSUInteger, BOOL *) = ^(ALAsset *result, NSUInteger index, BOOL *stop) {
if(result != nil) {
if([[result valueForProperty:ALAssetPropertyType] isEqualToString:ALAssetTypePhoto]) {
[assetURLDictionaries addObject:[result valueForProperty:ALAssetPropertyURLs]];
NSLog(#"result is:%#",result);
NSLog(#"asset URLDictionary is:%#",assetURLDictionaries);
NSURL *url= (NSURL*) [[result defaultRepresentation]url];
[library assetForURL:url
resultBlock:^(ALAsset *asset) { [assetsp addObject:asset]; }
failureBlock:^(NSError *error){ NSLog(#"test:Fail"); } ];
}
}
};
NSMutableArray *assetGroups = [[NSMutableArray alloc] init];
void (^ assetGroupEnumerator) ( ALAssetsGroup *, BOOL *)= ^(ALAssetsGroup *group, BOOL *stop){
NSLog(#"hi");
if(group != nil) {
[group enumerateAssetsUsingBlock:assetEnumerator];
[assetGroups addObject:group];
NSLog(#"Number of assets in group :%d",[group numberOfAssets]);
}
};
assetGroups = [[NSMutableArray alloc] init];
ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];
[library enumerateGroupsWithTypes:ALAssetsGroupAll
usingBlock:assetGroupEnumerator
failureBlock:^(NSError *error) {NSLog(#"A problem occurred");}];
This code is fetched from some ELCImagePickerController example from here
Some modifications are done for simplification.
May this will help you
[self.assetGroup enumerateAssetsUsingBlock:^(ALAsset *result, NSUInteger index, BOOL *stop)
{
if(result == nil)
return;
UIImageView *assetImageView = [[UIImageView alloc] initWithFrame:viewFrames];
[assetImageView setContentMode:UIViewContentModeScaleToFill];
[assetImageView setImage:[UIImage imageWithCGImage:[result thumbnail]]];
}];
Happy Coding :)
NEW ANSWER
Just use
[UIImage imageWithCGImage:[[asset defaultRepresentation] fullScreenImage]]
to store image directly instead of storing the asset at the time of storing asset in assetsp
just as follow
void (^assetEnumerator)( ALAsset *, NSUInteger, BOOL *) = ^(ALAsset *result, NSUInteger index, BOOL *stop) {
if(result != nil) {
if([[result valueForProperty:ALAssetPropertyType] isEqualToString:ALAssetTypePhoto]) {
[assetURLDictionaries addObject:[result valueForProperty:ALAssetPropertyURLs]];
NSLog(#"result is:%#",result);
NSLog(#"asset URLDictionary is:%#",assetURLDictionaries);
NSURL *url= (NSURL*) [[result defaultRepresentation]url];
[library assetForURL:url
resultBlock:^(ALAsset *asset) { //Your line
//[assetsp addObject:asset];
//My Changed line will store image directly to assetsp
[assetsp addObject:[UIImage imageWithCGImage:[[asset defaultRepresentation] fullScreenImage]]];
}
failureBlock:^(NSError *error){ NSLog(#"test:Fail"); } ];
}
}
};
NEW ANSWER 1
Try this code to store the ALAsset data in mutable array
NSMutableArray *returnArray = [[NSMutableArray alloc] init];
for(ALAsset *asset in _assets) {
NSMutableDictionary *workingDictionary = [[NSMutableDictionary alloc] init];
[workingDictionary setObject:[asset valueForProperty:ALAssetPropertyType] forKey:#"UIImagePickerControllerMediaType"];
[workingDictionary setObject:[UIImage imageWithCGImage:[[asset defaultRepresentation] fullScreenImage]] forKey:#"UIImagePickerControllerOriginalImage"];
[workingDictionary setObject:[[asset valueForProperty:ALAssetPropertyURLs] valueForKey:[[[asset valueForProperty:ALAssetPropertyURLs] allKeys] objectAtIndex:0]] forKey:#"UIImagePickerControllerReferenceURL"];
[returnArray addObject:workingDictionary];
and to get the image in UIImageView just do this
NSDictionary *dict = [info objectAtIndex:i];
UIImageView *imageview = [[UIImageView alloc] initWithImage:[dict objectForKey:UIImagePickerControllerOriginalImage]];
[imageview setContentMode:UIViewContentModeScaleAspectFit];
My code is as follows:
- (void)viewDidLoad
{
carousel.type = iCarouselTypeCoverFlow2;
[super viewDidLoad];
xy =[[NSMutableArray alloc]init];
NSMutableArray* assetURLDictionaries = [[NSMutableArray alloc] init];
ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];
void (^assetEnumerator)( ALAsset *, NSUInteger, BOOL *) = ^(ALAsset *result, NSUInteger index, BOOL *stop) {
if(result != nil) {
if([[result valueForProperty:ALAssetPropertyType] isEqualToString:ALAssetTypePhoto]) {
[assetURLDictionaries addObject:[result valueForProperty:ALAssetPropertyURLs]];
NSLog(#"result is:%#",result);
NSLog(#"asset URLDictionary is:%#",assetURLDictionaries);
NSURL *url= (NSURL*) [[result defaultRepresentation]url];
[library assetForURL:url
resultBlock:^(ALAsset *asset) {
[xy addObject:[UIImage imageWithCGImage:[[asset defaultRepresentation] fullScreenImage]]];
NSLog(#" xy is:%#",xy);
image =[ [UIImageView alloc ] initWithImage:[xy objectAtIndex:0]];
NSLog(#"image is:%#",image);
}
failureBlock:^(NSError *error){ NSLog(#"test:Fail"); } ];
}
}
};
NSMutableArray *assetGroups = [[NSMutableArray alloc] init];
void (^ assetGroupEnumerator) ( ALAssetsGroup *, BOOL *)= ^(ALAssetsGroup *group, BOOL *stop) {
NSLog(#"hello");
if(group != nil) {
[group enumerateAssetsUsingBlock:assetEnumerator];
[assetGroups addObject:group];
NSLog(#"Number of assets in group :%d",[group numberOfAssets]);
NSLog(#"asset group is:%#",assetGroups);
}
};
assetGroups = [[NSMutableArray alloc] init];
[library enumerateGroupsWithTypes:ALAssetsGroupAll
usingBlock:assetGroupEnumerator
failureBlock:^(NSError *error) {NSLog(#"A problem occurred");}];

Upload ALAsset URL images to the server

I am trying to access iPhone's photo album photo images through ALAssetsLibrary and upload(send) the images to my server. I am being successful accessing the photo album and get the asset URL of each images, via the following code:
- (void)viewDidLoad
{
[super viewDidLoad];
void (^assetEnumerator)(struct ALAsset *, NSUInteger, BOOL *) = ^(ALAsset *result, NSUInteger index, BOOL *stop) {
if(result != NULL) {
NSLog(#"See Asset: %#", result);
[assets addObject:result];
// Here storing the asset's image URL's in NSMutable array urlStoreArr
NSURL *url = [[result defaultRepresentation] url];
[urlStoreArr addObject:url];
}
};
void (^assetGroupEnumerator)(struct ALAssetsGroup *, BOOL *) = ^(ALAssetsGroup *group, BOOL *stop)
{
if(group != nil) {
[group enumerateAssetsUsingBlock:assetEnumerator];
}
[self.activity stopAnimating];
[self.activity setHidden:YES];
};
assets = [[NSMutableArray alloc] init];
library = [[ALAssetsLibrary alloc] init];
[library enumerateGroupsWithTypes:ALAssetsGroupAlbum
usingBlock:assetGroupEnumerator
failureBlock: ^(NSError *error) {
NSLog(#"Failure");
}];
urlStoreArr = [[NSMutableArray alloc] init];
}
-(void) UploadImagesToServer
{
for (int i=0; i<[urlStoreArr count]; i++)
{
// To get the each image URL here...
NSString *str = [urlStoreArr objectAtIndex:i];
NSLog(#"str: %#",str);
// Need to upload the images to my server..
}
}
I want to upload the images which i got from the device asset's URL to my server. Could someone please advise how can i program it for sending the images to the server using this case?
Thank you!
you could use the below SO post code for uploading images to server.
How can I upload a photo to a server with the iPhone?
upload image from iphone to the server folder

ALAssetsLibrary doesn't retrieve image URL's in physical iOS 4.1 iPod device?

I am trying to access iPhone's photo album photo images through ALAssetsLibrary. I could access all the photo albums and get the asset URL of each images on Simulator, via the following code:
- (void)viewDidLoad
{
[super viewDidLoad];
void (^assetEnumerator)(struct ALAsset *, NSUInteger, BOOL *) = ^(ALAsset *result, NSUInteger index, BOOL *stop) {
if(result != NULL) {
NSLog(#"See Asset: %#", result);
// assets is a NSMutableArray..
[assets addObject:result];
// Here storing the asset's image URL's in NSMutablearray urlStoreArr
NSURL *url = [[result defaultRepresentation] url];
[urlStoreArr addObject:url];
}
};
void (^assetGroupEnumerator)(struct ALAssetsGroup *, BOOL *) = ^(ALAssetsGroup *group, BOOL *stop)
{
if(group != nil) {
[group enumerateAssetsUsingBlock:assetEnumerator];
}
[self.activity stopAnimating];
[self.activity setHidden:YES];
};
assets = [[NSMutableArray alloc] init];
library = [[ALAssetsLibrary alloc] init];
[library enumerateGroupsWithTypes:ALAssetsGroupAlbum usingBlock:assetGroupEnumerator failureBlock: ^(NSError *error) {
NSLog(#"Failure");
}];
urlStoreArr = [[NSMutableArray alloc] init];
}
-(void) GetURLImages
{
for (int i=0; i<[urlStoreArr count]; i++)
{
// To get the each image URL here...
NSString *str = [urlStoreArr objectAtIndex:i];
NSLog(#"str: %#",str);
}
}
It works as expected on iOS 4.0 Simulator, i.e, getting all the images URL's (ex: assets-library://asset/asset.JPG?id=1000000002&ext=JPG). But it doesn't retrieve image URL's on iPod 4.1 device. What could be the problem here? Can someone please help me fix so the code could also work on iPod? I'm totally confused.
Thank you!
Try what I mentioned in my comment or the following
library enumerateGroupsWithTypes:ALAssetsGroupSavedPhotos
It also depends what photos you want.
void (^assetGroupEnumerator)(struct ALAssetsGroup *, BOOL *) = ^(ALAssetsGroup *group, BOOL *stop)
{
if(group != nil) {
[group enumerateAssetsUsingBlock:assetEnumerator];
}
[self.activity stopAnimating];
[self.activity setHidden:YES];
/* make */ group=nil;//otherwise it is enumerated thrice.
};

retrieve video format using AssetLibrary and display on uilabel

I would like to know how to retrieve video format using AssetLibrary and display on uilabel? i read on forum to use ALAssetPropertyRepresentations but im just lost. some help please?
I'm not sure what you mean by "format", but this code will display the video's UTI (basically, file type) and any metadata.
ALAssetsGroupEnumerationResultsBlock assetEnumerator = ^(ALAsset *asset, NSUInteger index, BOOL *stop) {
if(asset != nil) {
ALAssetRepresentation* representation = [asset defaultRepresentation];
NSLog(#"UTI = %#", [representation UTI]);
NSLog(#"Metadata = %#", [representation metadata]);
}
};
ALAssetsLibraryGroupsEnumerationResultsBlock assetGroupEnumerator = ^(ALAssetsGroup *group, BOOL *stop) {
if(group != nil) {
[group setAssetsFilter:[ALAssetsFilter allVideos]];
[group enumerateAssetsUsingBlock:assetEnumerator];
}
};
ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];
[library enumerateGroupsWithTypes:ALAssetsGroupAll
usingBlock:assetGroupEnumerator
failureBlock:^(NSError *error) {
NSLog(#"A problem occured. %#", error);
}];
[library release];
(Code modified from here.)
If you already have your asset, the code to update the label looks like this:
myLabel.text = [[myAsset defaultRepresentation] UTI];