startMonitoringForRegion不起作用

时间:2010-09-08 06:30:54

标签: objective-c cllocationmanager

当用户到达某个地区时,我想要基于位置的提醒

为此,我写了以下代码

CLLocationManager *manager=[[CLLocationManager alloc] init];
manager.desiredAccuracy=kCLLocationAccuracyBest;

manager.delegate=self;

CLLocationCoordinate2D loc;

loc.latitude=LReminder.lat;

loc.longitude=LReminder.lon;

CLRegion *region=[[CLRegion alloc] initCircularRegionWithCenter:loc
radius:LReminder.accuracy dentifier:LReminder.title];

CLLocationAccuracy acc=1.0;

[manager startMonitoringForRegion:region desiredAccuracy:acc];

[manager startMonitoringSignificantLocationChanges];

对于经理代表

-(void)locationManagerCLLocationManager *)manager didEnterRegionCLRegion *)region
{

    NSLog(@"didEnterRegion for %@",region.identifier);

    UIAlertView *alr=[[UIAlertView alloc] initWithTitle:@"Reminder didEnterRegion" 
message:region.identifier delegate:nil cancelButtonTitle:nil otherButtonTitles:@"Ok",nil];

    [alr show];

    [alr release];
}

-(void)locationManagerCLLocationManager *)manager didExitRegionCLRegion *)region
{
    NSLog(@"didExitRegion for %@",region.identifier);

    UIAlertView *alr=[[UIAlertView alloc] initWithTitle:@"Reminder didExitRegion" message:region.identifier delegate:nil cancelButtonTitle:nil otherButtonTitles:@"Ok",nil];

    [alr show];

    [alr release];
}

问题是当我到达提醒位置时,它没有调用任何代表的方法

请帮帮我

1 个答案:

答案 0 :(得分:2)

我不知道更多,我只能猜测,但我打赌你没有使用iPhone 4.区域监控目前仅适用于iPhone 4.

您应该使用:

[CLLocationManager regionMonitoringEnabled]

确定您的设备是否可以使用区域监控。