objective-c - TTLauncherItem : change badge immediately (or: how to refresh TTLauncherView)

Question

我有一个 TTLauncherView 和一些 TTLauncherItems。这些显示角标(Badge)，代表来自网络的消息。我在 viewWillAppear: 中设置了角标(Badge)，因此如果我切换到另一个 View 然后返回，则会显示正确的角标(Badge)。但是我想在收到消息后立即更新角标(Badge)。

在 TTLauncherView 上调用 setNeedsDisplay 没有帮助？

如何刷新 TTLauncherView？

在我的 MessageReceiver 类中，我这样做:

TTNavigator* navigator = [TTNavigator navigator];

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

我的 TTViewController 派生的 OverviewController

@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

Answer 1

我在 AppDelegate 上用 LauncherView 注册了我的 Controller 。在我的消息传递类中，我调用 [appDelegate reloadLauncherView]; 再次调用它

-(void)reloadLauncherView
{
    [self viewWillAppear:NO ];
}

在包含 LauncherView 的 Controller 上。