ttLauncherItem:立即更改徽章(或:如何刷新ttLauncherView)

我有一个 TTLauncherView 与一些 TTLauncherItems . 这些显示徽章,表示来自网络的消息。我把徽章放进去了 viewWillAppear: 如果我切换到另一个视图,然后返回,将显示正确的徽章。但我想在收到消息后立即更新徽章。

打电话 setNeedsDisplay 在ttLauncherView上没有帮助?

我如何刷新 TTD ?

在我的MessageReceiver类中,我执行以下操作:

TTNavigator* navigator = [TTNavigator navigator];

            [(OverviewController *)[navigator viewControllerForURL:@"tt://launcher"] reloadLauncherView] ;

我的ttviewcontroller派生的概述controller

@implementation OverviewController


- (id)init {
  if (self = [super init]) {
    self.title = OverviewTitle;
  }
  return self;
}

- (void)dealloc {
    [items release];
    [overView release];
    [super dealloc];
}


-(void)viewDidLoad
{
    [super viewDidLoad];

    overView = [[TTLauncherView alloc] initWithFrame:self.view.bounds];
    overView.backgroundColor = [UIColor whiteColor];
    overView.delegate = self;
    overView.columnCount = 4;

    items = [[NSMutableArray alloc] init];
    for(int i = 1; i <= NumberOfBars; ++i){
        NSString *barID = [NSString stringWithFormat:NameFormat, IDPrefix, i];
        TTLauncherItem *item = [[[TTLauncherItem alloc] initWithTitle:barID
                                                                image:LogoPath
                                                                  URL:[NSString stringWithFormat:@"tt://item/%d", i]
                                                            canDelete:NO] autorelease];
        [barItems addObject: item];


    }
    overView.pages = [NSArray arrayWithObject:items];
    [self.view addSubview:overView];

}

-(void)viewWillAppear:(BOOL)animated
{


    for(int i = 0; i <[barItems count]; i++){
        TTLauncherItem *item = [items objectAtIndex:i];
        NSString *barID = [NSString stringWithFormat:NameFormat, IDPrefix, i+1];
        P1LOrderDispatcher *dispatcher = [OrderDispatcher sharedInstance];
        P1LBarInbox *barInbox = [dispatcher.barInboxMap objectForKey:barID];
        item.badgeNumber = [[barInbox ordersWithState:OrderState_New]count];
    }
    [super viewWillAppear:animated];
}


- (void)launcherView:(TTLauncherView*)launcher didSelectItem:(TTLauncherItem*)item 
{
    TTDPRINT(@"%@", item);
    TTNavigator *navigator = [TTNavigator navigator];
    [navigator openURLAction:[TTURLAction actionWithURLPath:item.URL]];
}

-(void)reloadLauncherView
{

    [overView setNeedsDisplay];//This doesn't work
}
@end