无法在OSx中访问EKEventStore

Question

我尝试使用EKEventStore检查网页中的文档和引用。但仍然得到下面的问题，似乎我不能访问商店在OSx。我的版本是10.7.5，请帮我指出我在这方面做错了什么。

#import "AppDelegate.h" 
@implementation AppDelegate
@synthesize store = _store;
@synthesize defaultCalendar = _defaultCalendar;

- (void)applicationDidFinishLaunching:(NSNotification *)aNotification
{
    // Insert code here to initialize your application
    self.store = [[EKEventStore alloc] initWithAccessToEntityTypes:EKEntityTypeEvent];
    self.defaultCalendar  = [self.store defaultCalendarForNewEvents];
}

- (IBAction)startPress:(id)sender {
    NSLog(@"Default calendar:%@ is nil:%@", [self.defaultCalendar title],(self.defaultCalendar));
    NSArray *calendars = [self.store calendarsForEntityType:EKEntityTypeEvent];
    NSLog(@"Total calendars %lu", calendars.count);
}

这是在Log中得出的结果

2013-02-02 08:24:42.429 iCalendarProfiler-Test011520132296:403默认日历：(Null) is nil:(null) 2013-02-02 08:24:42.429 iCalendarProfiler-Test011520132296:403总日历0

Answer 1

适用于OS X的EKEventStore自10.8起可用，不适用于OS X 10.7.5