PHImageManager抛出"First stage of an opportunistic image request returned a non-table format image, th

Question

我正在使用phimagecachingmanager获取phasset的图像。我需要使用opportunistic模式，以便首先加载可用的低分辨率图像，然后随着完整分辨率可用，它被加载。

由于某种原因，我不断收到以下警告，低分辨率图像不会加载。仅当从iCloud获取最高分辨率时，图像才会加载。

警告：

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

我在做什么错？

    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
        }
    }
}

您将最大尺寸设置为图像大小。更改

targetSize: PHImageManagerMaximumSize

to

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

或指定图像大小，例如cgsize（使用：150，高度：150），除非您要由于内存耗尽而爆炸设备。

Answer 2

PHImageRequestOptions *option = [[PHImageRequestOptions alloc] init];
option.synchronous = YES;
``
将synchronous 属性设置为YES