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ios - iBeacon : What is the difference between didEnterRegion and didDetermineState(CLRegionStateInside)

我想在用户进入某个区域时发布通知。但是,由于相同的两个CLLocationManagerDelegate方法,我很困惑。我应该如何正确使用这两种方法?有人说,如果应用程序在区域中启动,则需要“didDetermineState”方法来启动区域观察。谢谢,-(void)locationManager:(CLLocationManager*)managerdidEnterRegion:(CLRegion*)region{[selfsendNotification:@"didEnterRegion"];}-(void)locationManager:(CLLocationManager*)m