问题
I am using this ImagePicker to select multiple images from library or camera. Once user is done selecting images, I am storing those images in to an array. I want display images to the Frame according to number of images selected. for example, if more than 5 images selected the result will be something like this from the selected Images.
Imagepicker is new for me. I don't know how to achieve this. I've read many posts but not getting clear idea how to implement in my case.
I am testing it on Demo project given,
func doneButtonDidPress(_ imagePicker: ImagePickerController, images: [UIImage]) {
imagePicker.dismiss(animated: true, completion: nil)
imageArray = images
createCollage()
}
func createCollage() {
}
If I use UIimageView to display/load images it shows massive memory usage.
Can please anyone help me here with any of these issue? Any help will be much appreciated!!
回答1:
look at the doc and code of ImagePicker, they are recommend to use
public var imageAssets: [UIImage] {
return AssetManager.resolveAssets(imagePicker.stack.assets)
}
by looking for AssetManager.resolveAssets implementation we will se some config size
open static func resolveAsset(_ asset: PHAsset, size: CGSize = CGSize(width: 720, height: 1280), completion: @escaping (_ image: UIImage?) -> Void) {
set size depends from your imageView size
--- UPD
or use the property
open var preferredImageSize: CGSize?
回答2:
Tested the same code on real device and it is working fine. In my case, testing on simulator was causing massive memory usage issue here.
来源：https://stackoverflow.com/questions/45842393/image-picker-display-multiple-images-like-collage-without-memory-issue