不在背景上调用CLLocationManager委派方法 [英] CLLocationManager delegate methods not being called on background

问题描述

我正在建立一个应用程式，检查使用者是否在我的客户的商店附近，如果有，则会传送通知给他。

我已将此行添加到我的 info.plist 文件：

image

这里是我的代码：

AppDelegate.m ：

   - （BOOL）application：（UIApplication *）application willFinishLaunchingWithOptions：（NSDictionary *）launchOptions 
 { ; 
 [self.locationManager startUpdatingLocation]; 
 
 return YES; 
} 
  - （void）configureLocationManager 
 {
 //初始化locationManager 
 self.locationManager = [[CLLocationManager alloc] init]; 
 //设置locationManager的（CLLocationManager）委托为self
 self.locationManager.delegate = self.monitorLocationVC; 
 //将locationManager的（CLLocationManager）的距离过滤器设置为none 
 //self.locationManager.distanceFilter=kCLDistanceFilterNone; 
 //将locationManager的（CLLocationManager）的activityType设置为导航
 self.locationManager.activityType = CLActivityTypeAutomotiveNavigation; 
 //设置locationManager的（CLLocationManager）desiredAccuracy为最好
 self.locationManager.desiredAccuracy = kCLLocationAccuracyBestForNavigation; 
 //如果操作系统版本是9或更高 - 设置allowBackgroundLocationUpdates为YES 
 if（[[[UIDevice currentDevice] systemVersion] floatValue]> = 9）{
 self.locationManager。 allowedBackgroundLocationUpdates = YES; 
} 
} 
  

MonitorLocationViewController.m

   - （void）locationManager：（CLLocationManager *）manager didUpdateLocations：（NSArray< CLLocation *> *）locations 
 {
 [self checkIfNearStore]; //不在后台调用
} 
 
  - （void）checkIfNearStore 
 {
 for（Store * currentStore in self.allStores）{
 if （[currentStore.circularRegion containsCoordinate：self.locationManager.location.coordinate]&&& currentStore.alreadySendNotification == NO）{
 NSLog（@Entered：％@，[[self storeForRegion：currentStore.circularRegion]地址]）; 
 currentStore.alreadySendNotification = YES; 
 [self.storesAlreadySentNotifications addObject：currentStore]; 
} 
} 
 
 for（Store * currentStore in self.storesAlreadySentNotifications）{
 if（！[currentStore.circularRegion containsCoordinate：self.locationManager.location.coordinate] ）{
 currentStore.alreadySendNotification = NO; 
} 
} 
} 
  

任何人都有想法？感谢！

解决方案

很抱歉，由于NDA，我无法发布用于地理围栏的代码，但本文可以帮助您实现您想要的： https ：//corgitoergosum.net/2013/01/12/geo-fencing-in-timetraveler-v2-part-i-of-3/

I'm building an application that checks if the user is near a store of my client, if it does, it sends him a notification.

I want the app to check it in the background as well.

I've added this lines to my info.plist file:

image

and here is my code:

AppDelegate.m:

-(BOOL)application:(UIApplication *)application willFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
[self configureLocationManager];
[self.locationManager startUpdatingLocation];

return YES;
}
-(void)configureLocationManager
{
    //Initializing locationManager
    self.locationManager=[[CLLocationManager alloc] init];
    //setting "locationManager"'s(CLLocationManager) delegate to "self"
    self.locationManager.delegate=self.monitorLocationVC;
    //Setting "locationManager"'s(CLLocationManager)'s distance filter to none
    //self.locationManager.distanceFilter=kCLDistanceFilterNone;
    //Setting "locationManager"'s(CLLocationManager)'s activityType to navigation
    self.locationManager.activityType=CLActivityTypeAutomotiveNavigation;
    //setting "locationManager"'s(CLLocationManager) desiredAccuracy to "best"
    self.locationManager.desiredAccuracy=kCLLocationAccuracyBestForNavigation;
    //If OS version is 9 or above - setting "allowsBackgroundLocationUpdates" to YES
    if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 9) {
        self.locationManager.allowsBackgroundLocationUpdates = YES;
    }
}

MonitorLocationViewController.m:

-(void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray<CLLocation *> *)locations
{
    [self checkIfNearStore]; //Not being called in background
}

-(void)checkIfNearStore
{
    for (Store *currentStore in self.allStores) {
        if ([currentStore.circularRegion containsCoordinate:self.locationManager.location.coordinate]&&currentStore.alreadySendNotification==NO) {
            NSLog(@"Entered: %@",[[self storeForRegion:currentStore.circularRegion] address]);
            currentStore.alreadySendNotification=YES;
            [self.storesAlreadySentNotifications addObject:currentStore];
        }
    }

    for (Store *currentStore in self.storesAlreadySentNotifications) {
        if (![currentStore.circularRegion containsCoordinate:self.locationManager.location.coordinate]) {
            currentStore.alreadySendNotification=NO;
        }
    }
}

Anybody have an idea? Thanks!

解决方案

Unfortunately, I can't post the code I use for geofencing due to NDA, but this article could help you achieve what you want: https://corgitoergosum.net/2013/01/12/geo-fencing-in-timetraveler-v2-part-i-of-3/

这篇关于不在背景上调用CLLocationManager委派方法的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！