ios – startMonitoringForRegion实际上有用吗？

2024年1月25日 295次阅读

我一直在尝试使用startMonitoringForRegion,但遇到了捕获进入/退出事件的问题.当我在模拟器上启动应用程序并移动到我指定的位置时,我得到1个输入事件,但输入从未再次触发的事件.如果我做得对,有人可以告诉我吗？

test.h

#import <UIKit/UIKit.h>
#import <CoreLocation/CoreLocation.h>

@interface EWViewController : UIViewController<CLLocationManagerDelegate> 
{
    CLLocationManager *locman;
}

@end

test.m

- (void)viewDidLoad
{
    if(locman == nil)
        locman = [[CLLocationManager alloc]init];

    locman.delegate = self;
    CLLocationCoordinate2D coord = CLLocationCoordinate2DMake(37.787359, -122.408227);
    CLRegion *region = [[CLRegion alloc]initCircularRegionWithCenter:coord radius:1000.0 identifier:@"SF"];
    [locman startMonitoringForRegion:region desiredAccuracy:kCLLocationAccuracyKilometer];

    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
}

- (void) locationManager:(CLLocationManager *)manager didEnterRegion:(CLRegion *)region
{
    NSLog(@"ENTER");
}

- (void) locationManager:(CLLocationManager *)manager didExitRegion:(CLRegion *)region
{
    NSLog(@"EXIT");
}

最佳答案 是的它有效,但它对当前时刻非常有吸引力. (我在俄罗斯测试过)

我建议你改用它：

- (void)locationManager:(CLLocationManager *)manager
    didUpdateToLocation:(CLLocation *)newLocation
           fromLocation:(CLLocation *)oldLocation;
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