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objective-ciosuiimageassetsfilepath

Load an image to UIImage from a file path to the asset library


Related to my previous question here.

I have a path to an image in the asset library , for example:

assets-library://asset/asset.JPG?id=1000000001&ext=JPG

Now, how could I load the image from this path to a UIImage object?

Here is the code:

NSString *path = [occasion imagePath];

//temp
NSLog(@"the 2nd occasion imagePath is: %@", path);
//end

if (path != nil)
{
    //UIImage *image = [UIImage imageNamed:path];
    UIImage *image = [UIImage imageWithContentsOfFile:path];

    image = [image imageByScalingAndCroppingForSize:CGSizeMake(36.0, 42.0)];
    [[cell imageView] setImage:image];
}

Solution

  • from the answer linked in my comment above:

        -(void)findLargeImage
    {
        NSString *mediaurl = [self.node valueForKey:kVMMediaURL];
    
        //
        ALAssetsLibraryAssetForURLResultBlock resultblock = ^(ALAsset *myasset)
        {
            ALAssetRepresentation *rep = [myasset defaultRepresentation];
            CGImageRef iref = [rep fullResolutionImage];
            if (iref) {
                largeimage = [UIImage imageWithCGImage:iref];
                [largeimage retain];
            }
        };
    
        //
        ALAssetsLibraryAccessFailureBlock failureblock  = ^(NSError *myerror)
        {
            NSLog(@"booya, cant get image - %@",[myerror localizedDescription]);
        };
    
        if(mediaurl && [mediaurl length] && ![[mediaurl pathExtension] isEqualToString:AUDIO_EXTENSION])
        {
            [largeimage release];
            NSURL *asseturl = [NSURL URLWithString:mediaurl];
            ALAssetsLibrary* assetslibrary = [[[ALAssetsLibrary alloc] init] autorelease];
            [assetslibrary assetForURL:asseturl 
                           resultBlock:resultblock
                          failureBlock:failureblock];
        }
    }