后台持续定位，实时上传坐标

background.jpg

项目配置

• 1: 需在项目配置中开启如下权限

  
  setting
• 2:在info.plist中添加 NSLocationAlwaysAndWhenInUseUsageDescription 及 NSLocationWhenInUseUsageDescription

实现部分代码

demo点这里

//定位 相关参数设置
- (CLLocationManager *)locManager
{
    if (!_locManager) {
        _locManager = [[CLLocationManager alloc] init];
        if ([_locManager respondsToSelector:@selector(setAllowsBackgroundLocationUpdates:)]) {
            _locManager.allowsBackgroundLocationUpdates = YES;
        }
        _locManager.pausesLocationUpdatesAutomatically = NO;
        _locManager.distanceFilter = kCLDistanceFilterNone;
        _locManager.desiredAccuracy = kCLLocationAccuracyBestForNavigation;
    }
    return _locManager;
}

- (void)startLocation
{    
    if ([CLLocationManager locationServicesEnabled] == NO) {
        NSLog(@"locationServicesEnabled false");
    } else {
        CLAuthorizationStatus authorizationStatus= [CLLocationManager authorizationStatus];
        
        if(authorizationStatus == kCLAuthorizationStatusDenied || authorizationStatus == kCLAuthorizationStatusRestricted) {
            NSLog(@"authorizationStatus failed");
        } else {
            NSLog(@"authorizationStatus authorized");
            self.locManager.delegate = self;
            
            [self.locManager requestAlwaysAuthorization];
//            [self.locManager requestWhenInUseAuthorization];
            [self.locManager startUpdatingLocation];
}   

//回调
- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray<CLLocation *> *)locations
{
    if (![self canUpload]) return;
    
    CLLocation *loc = locations.firstObject;
    
    NSLog(@"----- i = %d, 维度: %f, 经度: %f", i++, loc.coordinate.latitude, loc.coordinate.longitude);
    
    //上传定位
    [self uploadLocation:loc.coordinate];
}

- (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error
{
    NSLog(@"定位失败: %@", error);
}

- (BOOL)canUpload
{
    CFTimeInterval t = CACurrentMediaTime();
    if (t - self.lastUpdateTime > _interval) {
        self.lastUpdateTime = t;
        return YES;
    }
    return NO;
}

效果图

foreground.png lock.jpg

后言

由于截图是在位置不变的情况下进行的测试，位置不变，定位回调会间隔有点长，可能不会每60s（所设置的时间间隔）就回调一次， 但是如果在室外位置移动的情况及设置 _locManager.desiredAccuracy = kCLLocationAccuracyBest; 的情况下， 几乎可以达到每秒定位回调成功一次。