EKCalendar与Domain=NSMachErrorDomain Code=268435459

Question

我正在探索EKEventKit。我连接我的iPhone并调用来安装日历

EKEventStore *eventDB = [[EKEventStore alloc] init];
NSArray * calendars = [eventDB calendars ];

但是，当我记录日历时，我会得到以下错误消息：

"CADObjectGetIntProperty失败与错误Domain=NSMachErrorDomain Code=268435459“操作无法完成。(马赫错误268435459 -(ipc/发送)无效的目标端口)

有人知道这是什么以及我为什么要得到它吗。谢谢

雷扎

Answer 1

我发现了问题。

我以前在代码中加载并保留了一个EKEventStore。他们中的一人解决了这个问题。

雷扎

Answer 2

我的控制台上有同样的警告日志

早期代码：

"CalendarEventHandler.m"
eventStore = [[EKEventStore alloc] init];


"CalendarEventHandler.h"

@property (nonatomic,strong) EKEventStore *eventStore;

码修改后的

self.eventStore = [[EKEventStore alloc] init];//This helped me to remove warning

Answer 3

@ EKEventStore类EKEventsStore.h文件的讨论内容如下：

"It is generally best to hold onto a long-lived instance of an event store, most likely as a singleton instance in your application."

在这里也是这样写的：阅读和书写日历事件，在Connecting to the Event Store部分：

"An EKEventStore object requires a relatively large amount of time to initialize and release. Consequently, you should not initialize and release a separate event store for each event-related task. Instead, initialize a single event store when your app loads, and use it repeatedly to ensure that your connection is long-lived."

所以正确的方法是：

@interface MyEventStore : EKEventStore

+ (MyEventStore *)sharedStore;

@end

+ (MyEventStore *)sharedStore
{
    static dispatch_once_t onceToken;
    static MyEventStore *shared = nil;
    dispatch_once(&onceToken, ^{
        shared = [[MyEventStore alloc] init];
    });
    return shared;
}

@end

并使用它调用[MyEventStore sharedStore]。

此方法还修正了警告。