Objective-C - 将GPS信息添加到照片 [英] Objective-C - Adding GPS information to a photograph

问题描述

我现在用来保存图像的代码。

我想知道是否可以在将照片保存到相机胶卷时将GPS信息添加到照片中。是：

  UIImage * theImage =（UIImage *）[info objectForKey：UIImagePickerControllerOriginalImage]; 
 UIImageWriteToSavedPhotosAlbum（theImage，self，
 @selector（image：didFinishSavingWithError：contextInfo :)，nil）; 
  

我在想如何修改图片EXIF数据来添加当前位置，并使其兼容在iPhone上使用'Places'功能。 解决方案

这个例子： http://caffeinatedcocoa.com/blog/?p=7 解释了如何更新照片的日期。转至 CGImageProperties参考资料，并执行同样用相关的GPS键代替示例中的键kCGImagePropertyExifDateTimeDigitized。我自己没有尝试过，但听起来像是应该起作用。 ：）

I am wondering if it is possible to add GPS information to a photograph when saving the item to the camera roll.

The code I currently use to save the image is:

UIImage *theImage = (UIImage *)[info objectForKey: UIImagePickerControllerOriginalImage];
        UIImageWriteToSavedPhotosAlbum(theImage, self, 
                                       @selector(image:didFinishSavingWithError:contextInfo:), nil);

I am wondering how I can modify the image EXIF data to add the current location, and make it compatible with the 'Places' functionality on the iPhone.

解决方案

This example: http://caffeinatedcocoa.com/blog/?p=7 explains how to update the date of a photo. Go to CGImageProperties Reference and do the same replacing the key kCGImagePropertyExifDateTimeDigitized of the example with the relevant GPS keys. I haven't try this myself, but sounds like it should work. :)

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