ios - 当 UINavigationController 妨碍时访问 UITableView(在 UISplitViewController 中)

Question

我有一个像这样设置的 UISplitViewController:

-(IBAction)makeStory:(id)sender{
NSLog(@"makeStory:");

    makeStoryTableViewController = [[MakeStoryTableViewController alloc] initWithNibName:@"MakeStoryTableViewController" bundle:nil];
    MakeSentenceTableViewController *detailViewController = [[MakeSentenceTableViewController alloc] initWithNibName:@"MakeSentenceTableViewController" bundle:nil];
    UISplitViewController *splitViewController = [[[UISplitViewController alloc] init] autorelease];

    UINavigationController *rootNav = [[[UINavigationController alloc] initWithRootViewController:makeStoryTableViewController]autorelease];

    UINavigationController *detailNav = [[[UINavigationController alloc] initWithRootViewController:detailViewController] autorelease];

    splitViewController.viewControllers = [NSArray arrayWithObjects:rootNav, detailNav, nil];
    splitViewController.delegate        = makeStoryTableViewController;

    StoryBotAppDelegate *appDelegate = (StoryBotAppDelegate *)[[UIApplication sharedApplication] delegate];
    [appDelegate.window setRootViewController:splitViewController];
}

当我尝试在 UISplitView 委托(delegate)中设置 detailView 作为 didSelectRowAtIndexPath: 的结果时，我只能访问 NavigationController:

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {   
    NSLog(@"ViewControllers: %@", [self.splitViewController viewControllers]);
    MakeSentenceTableViewController *detailViewController = [[self.splitViewController viewControllers] objectAtIndex:1];
    Story *storySet = [fetchedResultsController objectAtIndexPath:indexPath];
    NSLog(@"detailViewController: %@", detailViewController); //Logs a UINavigationController
    [detailViewController setStory:storySet]; //Fails here because Navigation Controllers Can't setStory!
    [detailViewController refreshTables];
} 

这是有道理的，但我如何访问 UINavigationController 负责的 TableView？如果我删除 *rootNav 和 *detailNav 并用 splitViewController.viewControllers 语句中的 UITableViews 替换它们，它工作正常，但是我没有导航栏:

    MakeSentenceTableViewController *detailViewController = [[MakeSentenceTableViewController alloc] initWithNibName:@"MakeSentenceTableViewController" bundle:nil];
    UISplitViewController *splitViewController = [[[UISplitViewController alloc] init] autorelease];

    //UINavigationController *rootNav = [[[UINavigationController alloc] initWithRootViewController:makeStoryTableViewController]autorelease];

    //UINavigationController *detailNav = [[[UINavigationController alloc] initWithRootViewController:detailViewController] autorelease];

    splitViewController.viewControllers = [NSArray arrayWithObjects:makeStoryTableViewController, detailViewController, nil];
    splitViewController.delegate        = makeStoryTableViewController;

    StoryBotAppDelegate *appDelegate = (StoryBotAppDelegate *)[[UIApplication sharedApplication] delegate];
    [appDelegate.window setRootViewController:splitViewController];

如何访问 Detail TableView Controller 并保留导航栏？

Answer 1

我是这样想的。我犯了两个错误，在这些错误中我不得不使用 UINavigationController.viewControllers ObjectAtIndex: 属性。

1. 在函数 makeStory 中，我错误地将 UINavigationController 指定为委托(delegate)而不是 makeStoryTableViewController。我通过这样做来修复它，而不是(特别注意 splitViewController.delegate 部分):

   MakeSentenceTableViewController *detailViewController = [[MakeSentenceTableViewController alloc] initWithNibName:@"MakeSentenceTableViewController" bundle:nil]; 
   UISplitViewController *splitViewController = [[[UISplitViewController alloc] init] autorelease];
   
   UINavigationController *rootNav = [[[UINavigationController alloc] initWithRootViewController:makeStoryTableViewController]autorelease];
   
   UINavigationController *detailNav = [[[UINavigationController alloc] initWithRootViewController:detailViewController] autorelease];
   
   splitViewController.viewControllers = [NSArray arrayWithObjects:rootNav, detailNav, nil];
   
   //splitViewController.viewControllers = [NSArray arrayWithObjects:makeStoryTableViewController, detailViewController, nil];
   //RootViewController *root = (RootViewController *)[navigationController.viewControllers objectAtIndex:0]
   
   splitViewController.delegate        = [rootNav.viewControllers objectAtIndex:0];
   
   NSLog(@"delegate: %@",  [rootNav.viewControllers objectAtIndex:0]);
   
   StoryBotAppDelegate *appDelegate = (StoryBotAppDelegate *)[[UIApplication sharedApplication] delegate];
   NSLog(@"RootViewController: %@", appDelegate.window);
   
   [appDelegate.window setRootViewController:splitViewController];
   
   NSLog(@"AppDelegate.window: %@", appDelegate.window.rootViewController);
   

2. 我又犯了同样的错误，这次是在 didSelectRowAtIndexPath: 中，并尝试在 UINavigationController 中设置故事。为了修复它，我这样做了(特别注意关于 navControllerDetail.viewControllers 的部分:

   UINavigationController *navControllerDetail;
   navControllerDetail = [[self.splitViewController viewControllers] objectAtIndex:1];
   
   
   
   MakeSentenceTableViewController *detailViewController;
   
   detailViewController = [navControllerDetail.viewControllers objectAtIndex:0];
   
   Story *storySet = [fetchedResultsController objectAtIndexPath:indexPath];
   
   
   
   NSLog(@"detailViewController: %@", detailViewController);
   [detailViewController setStory:storySet];
   [detailViewController refreshTables];
   

现在要是我能弄清楚如何获得 SplitViewController to rotate properly 就好了!