startMonitoringForRegion无法正常工作 [英] startMonitoringForRegion not working

问题描述

我想要在用户到达特定区域时基于位置的提醒

I want Location based Reminder when user reaches to certain region

为此，我编写了后续代码

For that I have writen followin code

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，它没有呼叫任何代表'方法

Problem is when I reach to reminder location it is not calling any of the delegates' methods

请帮助我

推荐答案

我不知道更多，只能猜测，但我敢打赌，您未使用iPhone4。区域监视当前仅在iPhone 4上有效。

Without knowing more, I can only guess, but I'm betting you're not using an iPhone 4. Region monitoring currently only works on the iPhone 4.

您应使用：

[CLLocationManager regionMonitoringEnabled]

确定您的设备是否可以使用区域监视。

to determine if your device can use region monitoring.

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