ios - 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

我正在开发 iphone 应用程序，根据图像捕获时间对图像进行排序。

如何获取图片拍摄时间？

谢谢。

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);
}

结果:日期:2013:11:07 15:19:45