我正在使用拆分视图控制器,在使用新的视图控制器替换我的详细视图控制器时出现问题。当我启动应用程序时,我将我的空视图控制器作为我的详细视图控制器,并点击导航栏上的按钮以显示主视图控制器。当我在主视图控制器中选择一行时,我的详细视图控制器将替换为相应的控制器。它在第一次选择行时工作正常,但每次之后,当从主控制器中选择一行时,主控制器不会消失,因此它只会停留在细节控制器的顶部。
的AppDelegate:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
MasterViewController *masterVC = [[MasterViewController alloc]initWithNibName:@"MasterViewController" bundle:nil];
UINavigationController *masterNavController = [[UINavigationController alloc]initWithRootViewController:masterVC];
DetailViewController *detailVC = [[DetailViewController alloc]initWithNibName:@"DetailViewController" bundle:nil];
UINavigationController *detailNavController = [[UINavigationController alloc]initWithRootViewController:detailVC];
masterVC.detailViewController = detailVC;
self.splitViewController = [[UISplitViewController alloc]init];
self.splitViewController.delegate = detailVC;
self.splitViewController.viewControllers = @[masterNavController, detailNavController];
self.window.rootViewController = self.splitViewController;
[self.window makeKeyAndVisible];
return YES;
}
MasterViewController:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
ActionAlertsViewController *rootView = [[ActionAlertsViewController alloc]initWithNibName:nil bundle:nil];
AppDelegate *appDelegate = (AppDelegate *)[[UIApplication sharedApplication]delegate];
NSMutableArray *details = [self.splitViewController.viewControllers mutableCopy];
if (indexPath.section == 0) {
if (indexPath.row == 0) {
rootView.title = @"Action Alerts";
rootView.background = [UIImage imageNamed:@"capitol"];
rootView.urlString = @"http://kyfbnewsroom.com/category/public-affairs/notifications/feed/";
[rootView fetchEntries];
UINavigationController *detailNav = [[UINavigationController alloc]initWithRootViewController:rootView];
if (details.count > 1) {
[details replaceObjectAtIndex:1 withObject:detailNav];
} else {
[details insertObject:detailNav atIndex:1];
}
appDelegate.splitViewController.viewControllers = details;
appDelegate.window.rootViewController = self.splitViewController;
appDelegate.splitViewController.delegate = rootView;
[appDelegate.splitViewController viewWillAppear:YES];
}
}
}
答案 0 :(得分:1)
我不知道从哪里开始:
UIViewControllers
:[self.splitViewController.viewControllers mutableCopy]
[appDelegate.splitViewController viewWillAppear:YES]
appDelegate.window.rootViewController
AppDelegate
找出你是哪个观点viewWillAppear
,这是系统调用的视图控制器生命周期方法。你应该说[self.splitViewController showDetailViewController:detailNav sender:self]
请阅读documentation并按照教程进行操作: