爲HMLocationEvent準備NSPredicate

Question

我的要求是必須爲附件和位置事件創建HMEventTrigger。例如：我有一個名爲acc1的配件，它具有電源特性。例如，我想創建HMEventTrigger，如果acc1處於打開狀態以及何時到達某個位置。在這種情況下，我已經創建了ACC1謂詞像下面

謂詞HMCharacteristicWriteAction

HMCharacteristicWriteAction *chWr = [writeActionsArr objectAtIndex:0]; 
NSPredicate *pred1 = [HMEventTrigger predicateForEvaluatingTriggerWithCharacteristic:chWr.characteristic relatedBy:NSEqualToPredicateOperatorType toValue:chWr.targetValue]; 

謂詞HMLocationEvent

HMLocationEvent *b = (HMLocationEvent*)[locationsArr objectAtIndex:0]; 
NSDateComponents *com = [[NSDateComponents alloc] init]; 
NSPredicate *pred2 = [HMEventTrigger predicateForEvaluatingTriggerOccurringOnDateWithComponents:com]; 

EX：IF ACC1.ON AND THEN LOCATIONEVENT PERFORM HMACTIONSET

如果我組合了pred1和pred2對象，它也包括當前日期，但我不想包含日期。所以我必須在不包含時間或日期的情況下使用pred1和pred2創建觸發器，只需包含位置。感謝您閱讀我的文章。任何想法/建議都很有幫助。

Answer 1

您的問題陳述不明確。也許在位置事件中創建一個新的HMEventTrigger作爲events數組中唯一的對象？

HMHome *home = ... // home 
HMLocationEvent *locationEvent = ... // your event variable 
NSDateComponents *dateComponents = [[NSDateComponents alloc] init]; // create your date components 
HMEventTrigger *trigger = [[HMEventTrigger alloc] initWithName:@"eventName" events:@[locationEvent] predicate:[HMEventTrigger predicateForEvaluatingTriggerOccurringOnDateWithComponents:dateComponents]]; 
[home addTrigger:trigger completionHandler:^(NSError *error) { 
    // ... 
}];