prepareForSegue问题

prepareForSegue不显示pageviewcontroller：

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ([[segue identifier] isEqualToString:@"MYSegue"]) {

    // Get destination view
    PDFViewController *pdfviewController = [segue destinationViewController];
    NSString *path = [[NSBundle mainBundle] pathForResource:@"paper" ofType:@"pdf"];
    PageViewController *page = [[PageViewController alloc] initWithPDFAtPath:path];
    pdfviewController= page;
}
}

只显示了导航栏和后退键。
还报出了语法不匹配指针类型的错误。

你到底要传到那个界面？如果是pdfviewcontroller那这样就可以了，顶多传些个参数

• (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
  {
  if ([[segue identifier] isEqualToString:@"MYSegue"]) {

  // Get destination view
  PDFViewController *pdfviewController = [segue destinationViewController];
  //传参数
  }