将图像保存到已保存的照片后，相机胶卷资产图像不可用

Question

I am using ALAssetsLibrary to make an array of all images in the camera roll when my iPhone app starts. I store every image as a ALAsset * in an array. Later in the app, I am saving an image to the gallery using this:

UIImageWriteToSavedPhotosAlbum(croppedImage, self, @selector(image:didFinishSavingWithError:contextInfo:), nil);

The image is saved successfully to the saved photos album. But, now my problem is that when I try to retrieve images using the existing array of all images, I don't get anything. Do I need to build the array of all images again or is there some other way to do this?

Answer 1

Saving an image changes the library and invalidates objects like assets from the library. You need to reload assets from the library whenever the library changes - do that when you receive an ALAssetsLibraryChangedNotification .