I add the following info in the build settings of my app.
Then I also add the icon to my asset.
I build the app, it works normally, but I notice that when I changed the icon to 'AppIcon-Defaults', The icon change alert didn't appear. but it succeeds
.
I uploaded the archive to App Store I got:
ITMS-90895: Missing Icon - The Info.plist key CFBundleIcons.CFBundleAlternateIcons contains an entry “AppIcon-Defaults” that references asset “AppIcon-Defaults.” No such asset is present in the asset catalog.
Then I use xcrun --sdk iphoneos assetutil --info Assets.car to check the assets inside the archieved app, It have the asset.
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I extracted the gain map info from an image using
let url = Bundle.main.url(forResource: "IMG_1181", withExtension: "HEIC")
let source = CGImageSourceCreateWithURL(url! as CFURL, nil)
let portraitData = CGImageSourceCopyAuxiliaryDataInfoAtIndex(source!, 0, kCGImageAuxiliaryDataTypeHDRGainMap) as! [AnyHashable : Any]
let metaData = portraitData[kCGImageAuxiliaryDataInfoMetadata] as! CGImageMetadata
Then I printed all the metadata tags
func printMetadataProperties(from metadata: CGImageMetadata) {
guard let tags = CGImageMetadataCopyTags(metadata) as? [CGImageMetadataTag] else {
return
}
for tag in tags {
if let prefix = CGImageMetadataTagCopyPrefix(tag) as String?,
let namespace = CGImageMetadataTagCopyNamespace(tag) as String?,
let key = CGImageMetadataTagCopyName(tag) as String?,
let value = CGImageMetadataTagCopyValue(tag){
print("Namespace: \(namespace), Key: \(key), Prefix: \(prefix), value: \(value)")
} else {
}
}
}
//Namespace: http://ns.apple.com/ImageIO/1.0/, Key: hasXMP, Prefix: iio, value: True
//Namespace: http://ns.apple.com/HDRGainMap/1.0/, Key: HDRGainMapVersion, Prefix: HDRGainMap, value: 131072
//Namespace: http://ns.apple.com/HDRGainMap/1.0/, Key: HDRGainMapHeadroom, Prefix: HDRGainMap, value: 3.586325
I want to create a new CGImageMetadata and tags.
But when it comes to the HDR tags. It always fails to add to metadata.
let tag = CGImageMetadataTagCreate(
"http://ns.apple.com/HDRGainMap/1.0/" as CFString,
"HDRGainMap" as CFString,
"HDRGainMapHeadroom" as CFString,
.default,
3.56 as CFNumber
)
let path = "\(HDRGainMap):\(HDRGainMapHeadroom)" as CFString
let success = CGImageMetadataSetTagWithPath(metadata, nil, path, tag)// always false
The hasXMP works fine.
Is HDR a private dict for Apple?
I've requested the authentication in my main app.
PHPhotoLibrary.requestAuthorization(for: .readWrite) { status in }
Add the privacy description in both the main app and the extension.
But No matter the device is locked or unlocked. When I call
let fetchResult = PHAsset.fetchAssets(with: .image, options: nil)
let count = fetchResult.count
the count is always zero, even after a new photo is saved to the album in the same session.
In my SwiftUI view, I try to load the image from data.
var body: some View {
Group{
if let data = model.detailImageData, let uiimage = UIImage(data: data) {// no memory issue
Image(uiImage: uiimage)
.resizable()
.scaledToFit()
}
}
}
But I want to get the HDR style of my image, so I use
if let data = model.detailImageData, let uiimage = UIImageReader.default.image(data:data){ //memory leaks!!!
When I change the data, the memory of the previous image is never freeed. finally caused my app to crash.
You can see it from the Instrument screenshot.
I use this code to show the Image in HDR in SwiftUI
struct HDRImageView: UIViewRepresentable {
// Set up a common reader for all UIImage read requests.
static let reader: UIImageReader = {
var config = UIImageReader.Configuration()
config.prefersHighDynamicRange = true
return UIImageReader(configuration: config)
}()
let data:Data?
let enableHDR:Bool
func makeUIView(context: Context) -> UIImageView {
let view = UIImageView()
view.preferredImageDynamicRange = enableHDR ? .high : .standard
update(view)
// Set this view to fit itself to the parent view.
view.setContentCompressionResistancePriority(.defaultLow, for: .horizontal)
view.setContentCompressionResistancePriority(.defaultLow, for: .vertical)
view.setContentHuggingPriority(.required, for: .horizontal)
view.setContentHuggingPriority(.required, for: .vertical)
return view
}
func updateUIView(_ view: UIImageView, context: Context) {
update(view)
}
func update(_ view: UIImageView) {
autoreleasepool{//not working
if let data = data {
view.image = nil//set to nil first is not working
view.image = HDRImageView.reader.image(data: data)
} else {
view.image = nil
}
view.preferredImageDynamicRange = enableHDR ? .high : .standard
}
}
}
But when I update the input data, seems that the old image data can not be freeed.
After several changes, the app takes too much memory and crash.
I found it's the VM:ImageIO_Surface_Data and the VM_Image_IO take up the memory.
If I change the HDRImageView into a normal Image(uiimage:UIImage(data:)) It no longer have this issue.
Is it a memory leak? and how to solve this.
Update: I then tried using Image(_:cgImage), and it appear to be the same result.