如何从照片获取GPS数据

Question

我已经尝试了几天，以找到一种从照片库中的照片获取GPS位置的方法。我正在使用UIImagePicker来获取照片，但是在互联网上发布的任何一种解决方案似乎都没有用。我知道我应该将UIImage转换为PHAsset，但是到处都在使用一种不推荐使用的方法，称为fetchAssets(withALAssetURLs: [URL], options: PHFetchOptions?)。有什么办法可以做到这一点？非常感谢

Answer 1

我希望这会对您有所帮助：-

//step1:- import Photos

//step2:- when you presenting imagepicker controller

    if PHPhotoLibrary.authorizationStatus() == .authorized || PHPhotoLibrary.authorizationStatus() == .authorized{
        PHPhotoLibrary.requestAuthorization { [weak self](_) in
        // Present the UIImagePickerController
        self?.present(self!.imagePicker, animated: true, completion: nil)
    }
}

swift3.0和Swift4.0

//step3:-
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {

    //obtaining saving path
    let fileManager = FileManager.default
    let documentsPath = fileManager.urls(for: .documentDirectory, in: .userDomainMask).first
    let imagePath = documentsPath?.appendingPathComponent("image.jpg")
    // extract image from the picker and save it
    if let pickedImage = info[UIImagePickerControllerOriginalImage] as? UIImage {
        let data = UIImageJPEGRepresentation(pickedImage, 0.75)
        data.write(toFile: localPath!, atomically: true)
    }

    let coordinate = (info[UIImagePickerControllerPHAsset] as? PHAsset)?.location?.coordinate
    print(coordinate?.latitude ?? "No latitude found")
    print(coordinate?.longitude ?? "No longitude found")
    self.dismiss(animated: true, completion: nil)
}

迅捷4.2

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {

    //obtaining saving path
    let fileManager = FileManager.default
    let documentsPath = fileManager.urls(for: .documentDirectory, in: .userDomainMask).first
    let imagePath = documentsPath?.appendingPathComponent("image.jpg")

    // extract image from the picker and save it
    if let pickedImage = info[UIImagePickerController.InfoKey.originalImage] as? UIImage {

        let imageData = pickedImage.jpegData(compressionQuality: 0.75)
        try! imageData?.write(to: imagePath!)
    }

    let coordinate = (info[UIImagePickerController.InfoKey.phAsset] as? PHAsset)?.location?.coordinate
    print(coordinate?.latitude ?? "No latitude found")
    print(coordinate?.longitude ?? "No longitude found")
    self.dismiss(animated: true, completion: nil)
}

谢谢