保存照片并检索资产时，应用图片中的 Swift Camera 不保存 GPS 信息？答案

【问题标题】：Swift Camera in app picture not saving GPS information when photo is saved and the asset is retrieved?保存照片并检索资产时，应用图片中的 Swift Camera 不保存 GPS 信息？
【发布时间】：2018-03-18 22:20:15
【问题描述】：

我正在用相机和 UIImagePickerController 拍照，然后用

将它保存到相册

@objc func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {

    ImagePicker.dismiss(animated: true, completion: nil)
    photoChanged = true

    let image: UIImage = info[UIImagePickerControllerOriginalImage] as! UIImage
    let compressedImage = image.resizeWithWidth(width: 450)
    let ext: String = "JPEG"

    UIImageWriteToSavedPhotosAlbum(image, self, #selector(image(image:didFinishSavingWithError:contextInfo:)), nil)
    submittedPhoto = Photo(photo: compressedImage, ext: ext, key: nil, idx: nil, postId: post?.postId)

    if let cell = tableView.cellForRow(at: IndexPath(row: 1, section: 0)) as? SubmitHunterTVC {

        cell.addPhotoB.iconImageView.image = image
        cell.addPhotoB.iconImageView.contentMode = .scaleAspectFill
        cell.addPhotoB.clipsToBounds = true
    }
    tableView.reloadData()
}

当我检索资产并检查位置时，我从 EXIF 和资产中获得了空的 {GPS} 信息。

E7F0DDE0-3A89-4E77-AF0C-2AED2A4F96FF/L0/001 mediaType=1/0, sourceType=1, (3024x4032), creationDate=2018-03-18 22:19:36 +0000, location=0, hidden =0, 最爱=0

【问题讨论】：

标签： ios swift camera uiimagepickercontroller

【解决方案1】：

有一个很好的答案HERE，下面是该答案的一些代码，可能需要更新为当前语法：

func addAsset(image: UIImage, location: CLLocation? = nil) {
    PHPhotoLibrary.shared().performChanges({
        // Request creating an asset from the image.
        let creationRequest = PHAssetChangeRequest.creationRequestForAsset(from: image)
        // Set metadata location
        if let location = location {
            creationRequest.location = location
        }
    }, completionHandler: { success, error in
        if !success { NSLog("error creating asset: \(error)") }
    })
}

【讨论】：