title: Iphone CLLocationManager horizontalAccuracy update. When? and how do I know it?
body: <p>I need to display horizontalAccuracy of currentLocation on the map in my app. To do that I put a line of code in viewDidLoad(); 
  (_currentLocation is CLLocationManager's location.)</p>
  
  <pre><code>label4Accuracy.text = [NSString stringWithFormat:@"Accuracy: %.fm", _currentLocation.horizontalAccuracy];
  </code></pre>
  
  <p>And it display's accuracy. </p>
  
  <p>The problem is the accuracy does not change. The horizontalAccuracy changes its accuracy if we wait enough (not always though). </p>
  
  <p>What I want my app to be able to do is that it changes the accuracy and display it on the map in real time.</p>
  
  <p>I expected there might be a method somewhere near CLLocationManager like;
  - (CLLocationAccuracy *)horizontalAccuracyUpdated():</p>
  
  <p>but there isn't. So my question is where should I put the line of code above to display the horizontalAccuracy of currentLocation that changes in accordance to the actual device's current accuracy?</p>