ios - PHImageManager 抛出 "First stage of an opportunistic image request returned a non-table format image, this is not fatal, but it is unexpected"

Question

我正在使用 PHImageCachingManager 获取 PHAsset 的图像。我需要使用机会主义模式，以便首先加载可用的低分辨率图像，然后在全分辨率可用时加载它。

出于某种原因，我不断收到以下警告，并且我的低分辨率图像无法加载。仅当(从 iCloud)获取最高分辨率时才加载图像。

警告:

"First stage of an opportunistic image request returned a non-table format image, this is not fatal, but it is unexpected."

我做错了什么？

    let imageRequestOptions = PHImageRequestOptions()
    imageRequestOptions.isNetworkAccessAllowed = true
    imageRequestOptions.deliveryMode = .opportunistic
    let imageCachingManager = PHCachingImageManager()

    imageCachingManager.requestImage(for: asset , targetSize: PHImageManagerMaximumSize, contentMode: .aspectFill, options: imageRequestOptions) { (image, infoDict) in
        DispatchQueue.main.async {
            if self.myImageView.identifierTag == asset.localIdentifier {
                self.myImageView.image = image
            }
        }
    }

Answer 1

imageCachingManager.requestImage(for: asset , targetSize: PHImageManagerMaximumSize, contentMode: .aspectFill, options: imageRequestOptions) { (image, infoDict) in
    DispatchQueue.main.async {
        if self.myImageView.identifierTag == asset.localIdentifier {
            self.myImageView.image = image
        }
    }
}

您正在设置可用的最大图像尺寸。改变

targetSize: PHImageManagerMaximumSize

至

targetSize: CGSize(width: asset.pixelWidth, height: asset.pixelHeight)

或者指定图像大小，如 CGSize(with: 150, height: 150)，除非你想因为内存耗尽而爆炸你的设备。