带标题的pop方法

    SamplesController *aSamplesController = [[SamplesControlleralloc] initWithStyle:UITableViewStylePlain];

    testsViewController *aSamplesC = [[testsViewControlleralloc] init];

    UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:aSamplesC];

    samplesPopoverController  = [[UIPopoverController alloc] initWithContentViewController:navigationController];