Question

一点背景。我采用了GCCalendar，它只能在纵向工作，并将其扩展到类似于iPhone的日历应用程序的工作方式。我通过复制主视图类并将其修改为在横向中工作来完成此操作。因此，当手机处于纵向方向时，CGCalendar将使用原始纵向视图类从应用程序主视图控制器实例化，并在使用新修改的横向视图类横向时实例化。 GCCalendar中的大多数其他类都是共享的，无需修改。还有一些必须重复。

除了数据源的问题外，我把它全部搞定了。首次加载日历时以及每次用户更改正在查看的日期时都会调用数据源。问题是我无法在第一次调用时获得数据源调用。

我很难过，因为它在纵向方向工作正常，我发现两个版本之间没有任何区别。

以下是一些代码，它显示了第一次如何进入数据源调用。后续调用将删除所有日历子视图，并使用新日期再次实例化它们。重复的格局类名称以LS结尾。否则，你可以看到它们是相同的。

有没有人知道我可能会在哪里解决这个问题？

谢谢，

约翰

--------------------------------
   //App main view controller

- (void)showLandscapeCalendar {
    GCCalendarLandscapeView *calendar = [[[GCCalendarLandscapeView alloc] init] autorelease];
    calendar.dataSource = self;
    calendar.delegate = self;              
    navigationController = [[UINavigationController alloc] initWithRootViewController:calendar];
    [self presentModalViewController:navigationController animated:YES];
}

- (void)showPortraitCalendar {
    GCCalendarPortraitView *calendar = [[[GCCalendarPortraitView alloc] init] autorelease];
    calendar.dataSource = self;
    calendar.delegate = self;              
    navigationController = [[UINavigationController alloc] initWithRootViewController:calendar];
    [self presentModalViewController:navigationController animated:YES];
}

- (NSArray *)calendarEventsForDate:(NSDate *)date{
     //build and return the events array
     //this is the protocol datasource method
     //It is supposed to run every time the date changes in the calendar


}


-------------------------------
    // GCCalendarLandscapeView...
- (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];    
    if (viewDirty) {
        [self reloadDayAnimated:NO context:NULL];
        viewDirty = NO;
    }
    viewVisible = YES;  
}


- (void)reloadDayAnimated:(BOOL)animated context:(void *)context {
    GCCalendarDayViewLS *nextDayView = [[GCCalendarDayViewLS alloc] initWithCalendarView:self];
}

-------------------------------
     //GCCalendarDayViewLS
- (id)initWithCalendarView:(GCCalendarView *)view {
   if (self = [super init]) {
       dataSource = view.dataSource;

    }

    return self;
}


- (void)reloadData {
    //** first time through the dataSource method does not run
    events = [dataSource calendarEventsForDate:date];
}

-------------------------------
    // GCCalendarPortraitView...
- (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];    
    if (viewDirty) {
        [self reloadDayAnimated:NO context:NULL];
        viewDirty = NO;
    }
    viewVisible = YES;  
}


- (void)reloadDayAnimated:(BOOL)animated context:(void *)context {
    GCCalendarDayView *nextDayView = [[GCCalendarDayView alloc] initWithCalendarView:self];
}

-------------------------------
     //GCCalendarDayView
- (id)initWithCalendarView:(GCCalendarView *)view {
   if (self = [super init]) {
       dataSource = view.dataSource;

    }

    return self;
}


- (void)reloadData {
    **//this one works every time 
    events = [dataSource calendarEventsForDate:date];
}

无法从viewWillAppear调用数据源的麻烦

0 个答案: