ios - PHImageManager 获取全尺寸图像

Question

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Answer 1

使用 PHImageManagerMaximumSize 作为 targetSize:

func fetchImage(asset: PhotoAsset, size: CGSize, resizeMode: ResizeMode = .Exact, completion: (result: UIImage?) -> Void) {
        let photoAsset = asset as! PHAsset
        var options: PHImageRequestOptions?
        switch resizeMode {
            case .Exact:
                options = PHImageRequestOptions()
                options?.resizeMode = .Exact
            case .Default:
                options = nil
        }
        manager.requestImageForAsset(
            photoAsset,
            targetSize: PHImageManagerMaximumSize,
            contentMode: .AspectFill,
            options: options
        ) { [weak self] result, _ in
            completion(result: result)
        }
    }