ios - 仅每 5 分钟获取一次 GPS 位置

Question

在我的位置应用程序中实现了 didUpdateToLocation 方法。此方法每秒调用一次并提供位置数据。但我不需要每秒获取位置，我只需要每 5 分钟触发一次此方法。可以这样做吗？

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    //initialize location lisetener on Application startup
    self.myLocationManager = [[CLLocationManager alloc]init];
    self.myLocationManager.desiredAccuracy = kCLLocationAccuracyBest;
    self.myLocationManager.delegate = self;
    [self.myLocationManager startUpdatingLocation];


    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    // Override point for customization after application launch.
    if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
        self.viewController = [[INNOViewController alloc] initWithNibName:@"INNOViewController_iPhone" bundle:nil];
    } else {
        self.viewController = [[INNOViewController alloc] initWithNibName:@"INNOViewController_iPad" bundle:nil];
    }
    self.window.rootViewController = self.viewController;
    [self.window makeKeyAndVisible];
    return YES;
}


-(void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
{
    /*
    if(self.executingInBackground)
    {
        NSLog(@"Aplication running in background");
    }
    else
    {
        NSLog(@"Aplication NOT running in background");
    }
     */


    //NSLog(@"new location->%@ and old location -> %@",newLocation,oldLocation);

    NSString *urlAsString = @"http://www.apple.com";

    NSURL *url=[NSURL URLWithString:urlAsString];

    NSURLRequest *urlRequest=[NSURLRequest requestWithURL:url];

    NSOperationQueue *queue = [[NSOperationQueue alloc]init];


    [NSURLConnection sendAsynchronousRequest:urlRequest queue:queue completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) {

        if ([data length] > 0 && error == nil) {
            NSString *html = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
            NSLog(@"Downloaded html -> %@",html);
            //NSLog(@"Downloaded successfully");
        }
        else if([data length] == 0 && error == nil)
        {
            NSLog(@"Nothing downloaded");
        }
        else
        {
            NSLog(@"Error occured -> %@",error);
        }

    }];
}

Answer 1

它被快速调用是因为您请求了 kCLLocationAccuracyBest。退后一点。它不是基于时间，而是基于增量距离。以这种精度，即使距离发生微小变化也会在接收良好的区域触发更新。使用不同的值。

同样，这些方法并不意味着要根据时间使用。它们旨在根据增量距离使用。