我正在尝试制作一个可以将图片从iphone的照片库映射到谷歌地图的应用程序。我试图从图像中提取经度和纬度信息。我引用了此Get Exif data from UIImage - UIImagePickerController指南并成功检索了exif数据，但它不包含纬度和经度信息。它给了我以下输出
exif_dict: {
ApertureValue = "2.52606882168926";
BrightnessValue = "3.144031311154599";
ColorSpace = 1;
ComponentsConfiguration = (
1,
2,
3,
0
);
DateTimeDigitized = "2014:10:25 13:31:21";
DateTimeOriginal = "2014:10:25 13:31:21";
ExifVersion = (
2,
2,
1
);
ExposureMode = 0;
ExposureProgram = 2;
ExposureTime = "0.008333333333333333";
FNumber = "2.4";
Flash = 32;
FlashPixVersion = (
1,
0
);
FocalLenIn35mmFilm = 35;
FocalLength = "3.85";
ISOSpeedRatings = (
320
);
LensMake = Apple;
LensModel = "iPhone 4 front camera 3.85mm f/2.4";
LensSpecification = (
"3.85",
"3.85",
"2.4",
"2.4"
);
MeteringMode = 5;
PixelXDimension = 640;
PixelYDimension = 480;
SceneCaptureType = 0;
SceneType = 1;
SensingMethod = 2;
ShutterSpeedValue = "6.909195402298851";
SubsecTimeDigitized = 616;
SubsecTimeOriginal = 616;
WhiteBalance = 0;
}
请帮我检索经度和纬度信息。提前致谢