Currently Being ModeratedAug 17, 2012 3:10 AM (in response to MarionMck)
The memory consumed by a file is not based on the display size of the file. It is not even based on the size of the file on disk. It is based on the physical dimensions of the file. Even a small JPEG file can turn out to be massive in memory. Find out how big your images should be on the screen with a retina display and create smaller versions of them for your thumbnails. That is your only option.
Currently Being ModeratedAug 17, 2012 3:29 AM (in response to etresoft)
Thanks etresoft, but I still think I'm missing something fundamental. I can take hundreds of photographs on my iPad, each about 1MB. They will be happily displayed as thumbnail-type images in the Photos app, 5 to a row. I don't see a second small image file if I browse the iPad. My image files are around 0.5MB, so surely that means I should be able to do something similar.
Currently Being ModeratedAug 17, 2012 5:02 AM (in response to MarionMck)
Hhmm, I think I'm beginning to get it, looking at the thumbail example under 'creating an image from an image source'. Do the ALAssets effectively have a hidden thumbnail which is accessed?