基于地区的本地通知

Dan*_*n_R 6 geocoding geolocation geofencing

我目前正在使用"Regions"示例代码:https: //developer.apple.com/library/ios/#samplecode/Regions/Introduction/Intro.h tml#// apple_ref/doc/uid/DTS40010726-Intro-DontLinkElementID_2

我想更进一步,当用户退出该区域时生成或触发通知(可以同时进入和退出,我不介意,对于初始实现最简单的事情).

我一直在查看CLLocation类参考,位置感知编程指南以及本地和推送通知编程指南.而我正在遭受信息超载.

非常感谢 :)

编辑:我想我可能有一个解决问题的想法:在RegionsViewController实现文件中有这样的:

- (void)locationManager:(CLLocationManager *)manager didExitRegion:(CLRegion *)region        {
    NSString *event = [NSString stringWithFormat:@"didExitRegion %@ at %@", region.identifier, [NSDate date]];

    [self updateWithEvent:event];
}
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由于我想在用户退出指定区域边界时实现本地通知,我输入了以下内容:

- (void)locationManager:(CLLocationManager *)manager didExitRegion:(CLRegion *)region {
    NSString *event = [NSString stringWithFormat:@"didExitRegion %@ at %@", region.identifier, [NSDate date]];
    [self updateWithEvent:event];
    //implement local notification: 
    UIApplication *app                = [UIApplication sharedApplication];
    UILocalNotification *notification = [[UILocalNotification alloc] init];
    [[UIApplication sharedApplication] cancelAllLocalNotifications];

    if (notification == nil)
        return;

    notification.alertBody = [NSString stringWithFormat:@"Did You Lock Your House?"];
    notification.alertAction = @"Lock House";
    notification.soundName = UILocalNotificationDefaultSoundName; 
    notification.applicationIconBadgeNumber = 1;
    [app presentLocalNotificationNow:notification];

    [notification release];
}
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有人可以告诉我这是否正确,或者是否有任何建议?(对格式不佳道歉)

Lau*_*ent 1

你是对的,没有比从 locationManager:didExitRegion 触发本地通知更好的方法了:此外,即使您的应用程序在后台运行或关闭,这也将起作用。