如何添加地理标记位置图像相机

Question

如何在拍摄照片时添加位置，例如当智能手机要拍照并且相机打开时，该位置已经在图像选择器中可用，并且在拍摄照片时，位置成为照片上的水印。这是我编写的代码

Future pickImage(ImageSource source) async {
try {
  final image = await ImagePicker.pickImage(source: source);
  if(image == null) return;

  final imageTemporary = File(image.path);
  print(imageTemporary);
  
  
   setState(() => this.image = imageTemporary); 
  
} on PlatformException catch(e) {
  print('failed to pick image');
}

}

和

Container(padding: EdgeInsets.all(5),child: Row(children: [
                    Column(
                      children: [
                        image != null ? Image.file(image,
                       width: 50, height: 50, fit: BoxFit.cover,) : Text("Rumah Depan"),
                     Container(
                        margin: const EdgeInsets.fromLTRB(15, 5, 0, 0),
                       child: RaisedButton(
                         
                         padding: EdgeInsets.all(10),
                        onPressed: () {
                          pickImage(ImageSource.camera);
                        },
                       child: Icon(Icons.camera),
                  ),
                     ),

Answer 1

您需要从该坐标中获取坐标和名称位置。要获取坐标，请使用 geolocator。示例：

Geolocator.Position position = await Geolocator.Geolocator.getCurrentPosition(
              desiredAccuracy: Geolocator.LocationAccuracy.high);
// where position has lat and lang -> LatLng(position.latitude, position.longitude)

并使用 geocoder 将坐标解析为位置名称。示例：

// From coordinates
final coordinates = new Coordinates(1.10, 45.50); // <- here set coordinates
addresses = await Geocoder.local.findAddressesFromCoordinates(coordinates);
first = addresses.first;
print("${first.featureName} : ${first.addressLine}");

要将水印等位置打印到图像中，只需将 Stack 设置为图像的父级：

Stack(
    children: <Widget>[
        yourImage,
        Center(child: Text("text")),
    ]
)

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