ios - 无法在 iOS 上创建本地日历

Question

我正在尝试在 iOS 上创建本地日历。我请求访问 EKEntityTypeEvent 并获得授权，从 EKEventStore 创建日历(是的，我请求访问的同一实例)，找到 EKSourceTypeLocal 然后将其设置在我的新日历上。调用 saveCalendar:commit:error(使用 commit:YES)返回 YES 并且没有 NSError。生成的日历分配了一个 calendarIdentifier。

但是当我翻到 iOS 日历应用程序时，我的日历不在那里!我试过 iOS 7 和 8 模拟器(在“重置内容和设置...”之后，因此没有配置 iCloud)和装有 iOS 8 的 iCloud 连接的 iPhone 5s。没有任何效果!

我错过了什么？

我使用以下 View Controller 创建了一个裸项目来说明问题:

@import EventKit;
#import "ViewController.h"

@interface ViewController ()

@property (weak, nonatomic) IBOutlet UILabel *resultLabel;

@property (nonatomic, assign) NSUInteger calendarCount;
@property (nonatomic, strong) EKEventStore *eventStore;

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.

    self.resultLabel.text = @"";        
    self.eventStore = [[EKEventStore alloc] init];
}

- (IBAction)userDidTapCreateCalendar:(id)sender {
    EKAuthorizationStatus status = [EKEventStore authorizationStatusForEntityType:EKEntityTypeEvent];

    if (status == EKAuthorizationStatusNotDetermined) {
        __weak typeof(self) weakSelf = self;
        [self.eventStore requestAccessToEntityType:EKEntityTypeEvent
                                        completion:^(BOOL granted, NSError *error) {
                                            if (granted) {
                                                [weakSelf createCalendar];
                                            } else {
                                                weakSelf.resultLabel.text = @"If you don't grant me access, I've got no hope!";
                                            }
                                        }];
    } else if (status == EKAuthorizationStatusAuthorized) {
        [self createCalendar];
    } else {
        self.resultLabel.text = @"Access denied previously, go fix it in Settings.";
    }
}

- (void)createCalendar
{
    EKCalendar *calendar = [EKCalendar calendarForEntityType:EKEntityMaskEvent eventStore:self.eventStore];
    calendar.title = [NSString stringWithFormat:@"Calendar %0lu", (unsigned long)++self.calendarCount];

    [self.eventStore.sources enumerateObjectsUsingBlock:^(EKSource *source, NSUInteger idx, BOOL *stop) {
        if (source.sourceType == EKSourceTypeLocal) {
            calendar.source = source;
            *stop = YES;
        }
    }];

    NSError *error = nil;
    BOOL success = [self.eventStore saveCalendar:calendar commit:YES error:&error];
    if (success && error == nil) {
        self.resultLabel.text = [NSString stringWithFormat:@"Created \"Calendar %0lu\" with id %@",
                                 (unsigned long)self.calendarCount, calendar.calendarIdentifier];
    } else {
        self.resultLabel.text = [NSString stringWithFormat:@"Error: %@", error];
    }
}

@end

Answer 1

我已经在设备上测试了这段代码，它工作正常(更改 EKEntityMaskEvent -> EKEntityTypeEvent)。我可以在 iOS 日历中看到新日历。看起来模拟器实际上并没有保存您的日历。我前段时间遇到了同样的问题。