当应用程序在后台触发任务时更新位置。但无法以后台模式执行任务。我的scheduleBackgroundRefreshWithPreferredDate示例代码如下[WKExtension.sharedExtensionscheduleBackgroundRefreshWithPreferredDate:[NSDatedateWithTimeIntervalSinceNow:60]userInfo:nilscheduledCompletion:^(NSError*_Nullableerror){if(error==nil){NSLog(@"backgroundrefreshtaskre-