从iPhone相机捕获图像或从库中获取图像，如何获取图像捕获时间？

Question

I am working on iphone application, sort the images wrt image capture time.

How to get the image capture time?

Thanks.

Answer 1

- (void) imagePickerController: (UIImagePickerController *) picker
 didFinishPickingMediaWithInfo: (NSDictionary *) info {
    NSDictionary *metadata = [[NSDictionary alloc] initWithDictionary:[info objectForKey:UIImagePickerControllerMediaMetadata]];
    NSDictionary *exifData = [[NSDictionary alloc] initWithDictionary:[metadata objectForKey:@"{Exif}"]];
    NSString *captureDate = [exifData objectForKey:@"DateTimeOriginal"];

    NSLog(@"Date: %@", captureDate);
}

Result: Date: 2013:11:07 15:19:45