[英]didEnterRegion never gets called in ios
不知道我在做什么错。 我希望触发本地通知,告诉用户他在特定对象附近。 我的代码如下:
- (void)viewDidLoad {
self.locationManager = [[CLLocationManager alloc] init];
self.locationManager.desiredAccuracy = kCLLocationAccuracyHundredMeters;
self.locationManager.delegate = self;
[self.locationManager startUpdatingLocation];
CLLocationDistance radius = 1000.00;
CLLocationCoordinate2D location2D = CLLocationCoordinate2DMake(_location.coordinate.latitude, _location.coordinate.longitude);
CLCircularRegion *region = [[CLCircularRegion alloc] initWithCenter:location2D
radius:radius
identifier:@"theRegion"];
[self.locationManager startMonitoringForRegion:region];
}
- (void)locationManager:(CLLocationManager *)manager didEnterRegion:(CLRegion *)region
{
NSLog(@"GeoFence: didEnterRegion");
UILocalNotification *notification = [[UILocalNotification alloc] init];
notification.alertBody = @"You entered a region";
notification.soundName = UILocalNotificationDefaultSoundName;
[[UIApplication sharedApplication] presentLocalNotificationNow:notification];
}
如果您已经在该区域中,则不会收到关于您输入区域的通知,因为状态尚未更改。
在iOS 7和更高版本上,可以在开始监视区域时使用-[CLLocationManager requestStateForRegion:]
请求区域的当前状态。 -(void)locationManager:(CLLocationManager *)manager didDetermineState:(CLRegionState)state forRegion:(CLRegion *)region
。
如果您需要支持iOS 6,则可以通过-[CLRegion containsCoordinate:]
检查区域是否包含设备的当前坐标,从而手动执行此操作。
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