從iPhone相機捕獲圖像或從庫中獲取圖像，如何獲取圖像捕獲時間？

Question

我正在開發iphone應用程序，按圖像捕獲時間對圖像進行排序。

如何獲取圖像捕獲時間？

謝謝。

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);
}

結果：日期：2013：11：07 15:19:45