在Swift中将GPS元数据写入EXIF

import CoreLocation
import ImageIO

let locationManager = CLLocationManager()
locationManager.requestWhenInUseAuthorization()

if CLLocationManager.locationServicesEnabled() {
    locationManager.delegate = self
    locationManager.desiredAccuracy = kCLLocationAccuracyBest
    locationManager.startUpdatingLocation()
}

extension YourViewController: CLLocationManagerDelegate {
    func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
        guard let location = locations.last else { return }
        
        // 获取经纬度信息
        let latitude = location.coordinate.latitude
        let longitude = location.coordinate.longitude
        
        // 创建一个包含GPS信息的字典
        let gpsMetadata = [
            kCGImagePropertyGPSLatitude: latitude,
            kCGImagePropertyGPSLongitude: longitude,
            // 其他GPS信息...
        ]
        
        // 将GPS信息写入照片的EXIF中
        if let imageURL = Bundle.main.url(forResource: "your_image", withExtension: "jpg"),
           let imageSource = CGImageSourceCreateWithURL(imageURL as CFURL, nil),
           let imageDestination = CGImageDestinationCreateWithURL(imageURL as CFURL, kUTTypeJPEG, 1, nil) {
            
            let mutableMetadata = CGImageMetadataCreateMutableCopy(CGImageSourceCopyMetadataAtIndex(imageSource, 0, nil)!)
            CGImageMetadataSetTagWithPath(mutableMetadata, nil, kCGImagePropertyGPSDictionary as CFString, gpsMetadata as CFTypeRef)
            
            CGImageDestinationAddImageAndMetadata(imageDestination, CGImageSourceCreateImageAtIndex(imageSource, 0, nil)!, mutableMetadata, nil)
            CGImageDestinationFinalize(imageDestination)
        }
        
        // 停止更新GPS信息
        locationManager.stopUpdatingLocation()
    }
    
    func locationManager(_ manager: CLLocationManager, didFailWithError error: Error) {
        print("Failed to get GPS location: \(error.localizedDescription)")
    }
}