Hi,
It seems like the image picker for ios does not provide the correct image metadata when picking an image. When I use the plugin on android, it is possible to read the metadata from the image, providing latitude and longitude coordinates of the image. When using the same code and the same image on IOS, the image is displayed correctly but no metadata or sparse meta data (5 elements of around 50) is returned.
The following code is used for reproducing this:
import 'package:exif/exif.dart';
import 'package:image_picker/image_picker.dart';
...
var userImage = await ImagePicker.pickImage(source: ImageSource.gallery);
var bytes = await userImage.readAsBytes();
var tags = await readExifFromBytes(bytes);
tags.forEach((key, value) => print("$key : $value"));
which on ios provide:
2019-04-28 18:38:56.034770+0200 Runner[56038:217320] flutter: Image Orientation : Horizontal (normal)
2019-04-28 18:38:56.034948+0200 Runner[56038:217320] flutter: Image ExifOffset : 38
2019-04-28 18:38:56.035105+0200 Runner[56038:217320] flutter: EXIF ColorSpace : sRGB
2019-04-28 18:38:56.035271+0200 Runner[56038:217320] flutter: EXIF ExifImageWidth : 4608
2019-04-28 18:38:56.035462+0200 Runner[56038:217320] flutter: EXIF ExifImageLength : 3456
while on android provide the following keys (along with many others):
static const String latKey = "GPS GPSLatitude";
static const String lngKey = "GPS GPSLongitude";
static const String latRefKey = "GPS GPSLatitudeRef";
static const String lngRefKey = "GPS GPSLongitudeRef";
The image used:
The image have been tested both on ios simulator (XR) and a physical phone, 6s I think, with the same result. The image have been validated both in photos app on IOS device, where the location can be displayed (by displaying the photo in photos app and swiping from buttom to top, showing "places", which displays where the image was taken), and on website: http://metapicz.com/#landing
So it seems to me that the image provided is stripped for its metadata, or at least some of it. Hope you can help resolving this issue.
Hi,
It seems like the image picker for ios does not provide the correct image metadata when picking an image. When I use the plugin on android, it is possible to read the metadata from the image, providing latitude and longitude coordinates of the image. When using the same code and the same image on IOS, the image is displayed correctly but no metadata or sparse meta data (5 elements of around 50) is returned.
The following code is used for reproducing this:
which on ios provide:
while on android provide the following keys (along with many others):
The image used:
The image have been tested both on ios simulator (XR) and a physical phone, 6s I think, with the same result. The image have been validated both in photos app on IOS device, where the location can be displayed (by displaying the photo in photos app and swiping from buttom to top, showing "places", which displays where the image was taken), and on website: http://metapicz.com/#landing
So it seems to me that the image provided is stripped for its metadata, or at least some of it. Hope you can help resolving this issue.