Segue是空白的（黑色），无法查看数据

Question

(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([segue.identifier isEqualToString:@"DetailPlacePage"]) {
    NSIndexPath *indexPath = [self.Allplace indexPathForSelectedRow];
    NomadPlaceDetailViewController *placedetailcontroller = segue.destinationViewController;
    placedetailcontroller.myDictionary = [self.placeArray objectAtIndex:indexPath.row];
  }
}

这是我用来为UIviewcontroller准备segue的代码。 无法看到下一个视图控制器，屏幕变为空白，只显示导航栏。

Answer 1

尝试投射NomadPlaceDetailViewController：

NomadPlaceDetailViewController *placedetailcontroller = (NomadPlaceDetailViewController *)segue.destinationViewController;