How do I get access to the album I saved photos like in camera app?

问题

I have saved photos to my customised album in my app using code

[library saveImage:self.capturedImg toAlbum:@"FunCam" withCompletionBlock:^(NSError *error) {
    if (error!=nil) {
        NSLog(@"Big error: %@", [error description]);
    }
}];

Now I want to retrive all photos saved to that album when user click some button and show them in view like camera app (the default app on iphone) shows

Please help me how can I do that?

Thanks in advance

回答1:

Try these methods...

-(void)loadNewLibraryImages
{
    self.assetGroups = [[NSMutableArray alloc] init];
    // Group enumerator Block
    dispatch_async(dispatch_get_main_queue(), ^
                   {    
                       void (^assetGroupEnumerator)(struct ALAssetsGroup *, BOOL *) = ^(ALAssetsGroup *group, BOOL *stop) 
                       {
                           if (group == nil) 
                           {
                               return;
                           }
                           if ([[group valueForProperty:ALAssetsGroupPropertyName] isEqualToString:@"YOUR ALBUM NAME"]) {
                               [self.assetGroups addObject:group];                             
                               [self loadImages];
                               return;
                           }                           

                           if (stop) {
                               return;
                           }

                       };

                       // Group Enumerator Failure Block
                       void (^assetGroupEnumberatorFailure)(NSError *) = ^(NSError *error) {

                           UIAlertView * alert = [[UIAlertView alloc] initWithTitle:@"ERROR" message:[NSString stringWithFormat:@"No Albums Available"] delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles:nil];
                           [alert show];
                           [alert release];
                       };   

                       // Enumerate Albums
                       ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];        
                       [library enumerateGroupsWithTypes:ALAssetsGroupAll
                                              usingBlock:assetGroupEnumerator 
                                            failureBlock:assetGroupEnumberatorFailure];


                   });


}

-(void)loadImages
{   
    //for (ALAssetsGroup *assetGroup in self.assetGroups) {
//  for (int i = 0; i<[self.assetGroups count]; i++) {

        ALAssetsGroup *assetGroup = [self.assetGroups objectAtIndex:0];
        NSLog(@"ALBUM NAME:;%@",[assetGroup valueForProperty:ALAssetsGroupPropertyName]);

        [assetGroup enumerateAssetsUsingBlock:^(ALAsset *result, NSUInteger index, BOOL *stop) 
         {         
         if(result == nil) 
         {
         return;
         }
            UIImage *img = [UIImage imageWithCGImage:[[result defaultRepresentation] fullScreenImage] scale:1.0 orientation:(UIImageOrientation)[[result valueForProperty:@"ALAssetPropertyOrientation"] intValue]];         

         }];  

//  }
}

hope they will help....

来源：https://stackoverflow.com/questions/10040731/how-do-i-get-access-to-the-album-i-saved-photos-like-in-camera-app

标签

iphone

ios

camera

alassetslibrary