Question

我目前正在尝试以Xcode5中的表格视图列表的形式创建一个线路管理应用程序。我正在尝试将queue.h的属性mutablearray提供给queueviewcontroller，它也具有可变数组属性。这样做的主要原因是我稍后会创建另一个nsmutablearray，其对象是队列数组，即它将是一个成员列表列表。由于某种原因（我搜索谷歌和SO）应用程序编译正常，但没有问题，但当我运行模拟器时，它只产生黑屏。

我在编程方面相对较新，所以感谢任何帮助。如果您需要其他信息，请告诉我们。

Queue是一个NSObject子类，其属性为NSMutableArray，名为arrayQueue

故事板只是一个带有附加tableviewcontroller（QueueViewController）的navcontroller。

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app 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

您未设置rootViewController的{{1}}。

修改

您可以在window中创建数组。在viewDidLoad中写道：

viewDidLoad

iphone模拟器只加载黑屏

1 个答案: