iphone模拟器只加载黑屏

Question

我目前正在尝试在 Xcode5 中以表格视图列表的形式制作线路管理应用程序。我正在尝试将作为 queue.h 属性的 mutablearray 提供给也具有可变数组属性的 queueviewcontroller。这样做的主要原因是我稍后将创建另一个 nsmutablearray，其对象是队列的数组，即它将是成员列表的列表。 由于某种原因（我已经搜索过 Google 和 SO），应用程序编译得很好，即没有问题，但是当我运行模拟器时，它只会产生黑屏。

我在编程方面相对较新，因此不胜感激。如果你们需要更多信息，请告诉我。

Queue 是一个 NSObject 子类，具有一个名为 arrayQueue 的 NSMutableArray 属性

情节提要只是一个导航控制器，附带有 tableviewcontroller(QueueViewController)。

这是来自 QueueViewController.m 的代码 .h 文件只有一个名为 *queue 的 nsmutable 数组属性；

@implementation QueueViewController
{
Queue *list;
}

- (void)viewDidLoad
{
[super viewDidLoad];

list = [[Queue alloc]init];

QueueMember *member = [[QueueMember alloc]init];
member.name = @"adam";
member.rank = 1;
member.eta = 5;
[list.arrayQueue addObject:member];

member = [[QueueMember alloc]init];
member.name = @"bob";
member.rank = 2;
member.eta = 10;
[list.arrayQueue addObject:member];

member = [[QueueMember alloc]init];
member.name = @"cason";
member.rank = 3;
member.eta = 15;
[list.arrayQueue addObject:member];

QueueViewController *queueViewController = [[QueueViewController alloc]init];
queueViewController.queue = list.arrayQueue;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"QueueCell"];

QueueMember *member = (self.queue)[indexPath.row];
cell.textLabel.text = member.name;
cell.detailTextLabel.text = [NSString stringWithFormat:@"%d min", member.eta];

return cell;
}

整个应用 delegate.m

#import "AppDelegate.h"

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{   
return YES;
}

- (void)applicationWillResignActive:(UIApplication *)application
{
// Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
// Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
}

- (void)applicationDidEnterBackground:(UIApplication *)application
{
// Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later. 
// If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
}

- (void)applicationWillEnterForeground:(UIApplication *)application
{
// Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the  background.
}

- (void)applicationDidBecomeActive:(UIApplication *)application
{
// Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
}

- (void)applicationWillTerminate:(UIApplication *)application
{
// Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
}

@end

Answer 1

您没有设置window 的rootViewController。

编辑：

您可以在viewDidLoad 中创建数组。在viewDidLoad 写：

list = [[Queue alloc]init];

QueueMember *member = [[QueueMember alloc]init];
member.name = @"adam";
member.rank = 1;
member.eta = 5;
[list.arrayQueue addObject:member];

member = [[QueueMember alloc]init];
member.name = @"bob";
member.rank = 2;
member.eta = 10;
[list.arrayQueue addObject:member];

member = [[QueueMember alloc]init];
member.name = @"cason";
member.rank = 3;
member.eta = 15;
[list.arrayQueue addObject:member];