How to fetch latitude,longitude or address from photo which is taken from camera

Question

I would like to fetch latitude,longitude or address from photo which is taken from camera ,I have used the link iPhone Get UIImagePickerController Lat/Lng

and the code which I used is,

So this is how we handle the info given by the picker:

- (void)imagePickerController:(UIImagePickerController *)picker
            didFinishPickingMediaWithInfo:(NSDictionary *)info
{

    if ([picker sourceType] == UIImagePickerControllerSourceTypePhotoCamera) {
        // We'll store the info to use in another function later
        self.imageInfo = info;

        // Get the asset url
        NSURL *url = [info objectForKey:@"UIImagePickerControllerReferenceURL"];

        // We need to use blocks. This block will handle the ALAsset that's returned: 
        ALAssetsLibraryAssetForURLResultBlock resultblock = ^(ALAsset *myasset)
        {
            // Get the location property from the asset  
            CLLocation *location = [myasset valueForProperty:ALAssetPropertyLocation];
            // I found that the easiest way is to send the location to another method
            [self handleImageLocation:location];
        };
        // This block will handle errors:
        ALAssetsLibraryAccessFailureBlock failureblock  = ^(NSError *myerror)
        {
            NSLog(@"Can not get asset - %@",[myerror localizedDescription]);
            // Do something to handle the error
        };


        // Use the url to get the asset from ALAssetsLibrary,
        // the blocks that we just created will handle results
        ALAssetsLibrary* assetslibrary = [[ALAssetsLibrary alloc] init];
        [assetslibrary assetForURL:url 
                       resultBlock:resultblock
                      failureBlock:failureblock];

    }
}

But the location variable returns nil. How extract the location or address from photo which is taken from camera.

@Ani Prasad. Actually i followed that link only .if you observe there is same code — Murali mohan Proddatur, Jun 12 '15 at 07:00
Is the photo localized? If you go to Photos.app and choose it, is it localized? For example, screenshots or photo got from (FaceBook, WhatsApp, etc.) may not be localized. — Larme, Jun 12 '15 at 07:47

soumya · Accepted Answer · 2015-06-18T07:37:42.763

0

I have used this below code for location from camera picture..Hope this helps you

 - (void)imagePickerController:(UIImagePickerController *)picker
        didFinishPickingMediaWithInfo:(NSDictionary *)info
 {

    if ([picker sourceType] == UIImagePickerControllerSourceTypePhotoCamera) {
    // We'll store the info to use in another function later
    self.imageInfo = info;

    // Get the asset url
    NSURL *url = [info objectForKey:@"UIImagePickerControllerReferenceURL"];

    // We need to use blocks. This block will handle the ALAsset that's returned: 
    ALAssetsLibraryAssetForURLResultBlock resultblock = ^(ALAsset *myasset)
    {
        // Get the location property from the asset  

        CLLocation *location = [myasset valueForProperty:ALAssetPropertyLocation];
        // I found that the easiest way is to send the location to another method

        self.lat =location.coordinate.latitude; //[[gpsdata valueForKey:@"Latitude"]floatValue];
        self.lng =location.coordinate.longitude;
        NSLog(@"\nLatitude: %f\nLongitude: %f",self.lat,self.lng);

        strLocation=[NSString stringWithFormat:@"La:%f Lo%f",self.lat,self.lng];

        NSLog(@"Can not get asset - %@",strLocation);

    };
    // This block will handle errors:
    ALAssetsLibraryAccessFailureBlock failureblock  = ^(NSError *myerror)
    {
        NSLog(@"Can not get asset - %@",[myerror localizedDescription]);

    };

    ALAssetsLibrary* assetslibrary = [[ALAssetsLibrary alloc] init];
    [assetslibrary assetForURL:url 
                   resultBlock:resultblock
                  failureBlock:failureblock];

}
 }

edited Jun 18 '15 at 07:37

answered Jun 12 '15 at 08:50

soumya

3,801
9
35
69

where i have to use this method in my code? please clarify me – Murali mohan Proddatur Jun 18 '15 at 06:43
In place of ALAssetsLibraryAssetForURLResultBlock block – soumya Jun 18 '15 at 07:17
i am getting asset.defaultRepresentation.metadata data nil – Murali mohan Proddatur Jun 18 '15 at 07:22
can you give a simple and sweet code sample example? – Murali mohan Proddatur Jun 18 '15 at 07:23
i have just took a glance on it.in that metadata there is no {GPS} key or latitude and longitude. after applying your code will i get it? – Murali mohan Proddatur Jun 18 '15 at 07:32
Can you check the updated with code with valueForProperty:ALAssetPropertyLocation.. ..As defaultRepresentation is going to be deprecated method soon iOS 9 :https://developer.apple.com/library/prerelease/ios/documentation/AssetsLibrary/Reference/ALAsset_Class/index.html#//apple_ref/occ/instm/ALAsset/defaultRepresentation – soumya Jun 18 '15 at 07:41
Are you able to get the location details now? – soumya Jun 18 '15 at 07:59
my xcode is 6.3 .xcode 6.4 or 7 will i get ios 9 sdk? – Murali mohan Proddatur Jun 18 '15 at 08:34
ok sowmya thanks for your relpy. very soon days i will update my code.your older project is able to get latitude and longitude? – Murali mohan Proddatur Jun 18 '15 at 09:40

How to fetch latitude,longitude or address from photo which is taken from camera

1 Answers1