無法通過<code>NSDictionaries</code>設置不同的字典

Question

我環路不同的值來計算的註解從用戶位置的距離是這樣的：

CLLocation *pinLocation = [[CLLocation alloc] 
             initWithLatitude:realLatitude 
             longitude:realLongitude]; 

CLLocation *userLocation = [[CLLocation alloc] 
             initWithLatitude:mapView.userLocation.coordinate.latitude 
             longitude:mapView.userLocation.coordinate.longitude]; 

CLLocationDistance distance = [pinLocation distanceFromLocation:userLocation]; 

結果：

NSLog(@"Distance: %4.0f m.", distance); 

2013-05-04 15:58:53.301 testApp[3194:907] Distance: 65758 m. 
2013-05-04 15:58:53.304 testApp[3194:907] Distance: 91454 m. 
2013-05-04 15:58:53.308 testApp[3194:907] Distance: 248726 m. 
2013-05-04 15:58:53.310 testApp[3194:907] Distance: 297228 m. 
2013-05-04 15:58:53.313 testApp[3194:907] Distance: 163058 m. 

然後我嘗試添加距離用於字典

NSString *dist = [NSString stringWithFormat:@"%4.0f m.", distance]; 

[ann setValue:dist forKey:@"Distance"]; 

但它只添加最後一個距離（距離：163058米）爲所有字典。

如何爲不同的字典設置不同的值？

編輯：我的環

if ([[NSUserDefaults standardUserDefaults] boolForKey:@"blueKey"]) 
    { 

     ann = [dict objectForKey:@"Blue"]; 

     [resultArray addObject:@"Blue"]; 


     for(int i = 0; i < [ann count]; i++) { 


      NSString *coordinates = [[ann objectAtIndex:i] objectForKey:@"Coordinates"]; 

      double realLatitude = [[[coordinates componentsSeparatedByString:@","] objectAtIndex:1] doubleValue]; 
      double realLongitude = [[[coordinates componentsSeparatedByString:@","] objectAtIndex:0] doubleValue]; 

      MyAnnotation *myAnnotation = [[MyAnnotation alloc] init]; 
      CLLocationCoordinate2D theCoordinate; 
      theCoordinate.latitude = realLatitude; 
      theCoordinate.longitude = realLongitude; 

      myAnnotation.coordinate=CLLocationCoordinate2DMake(realLatitude,realLongitude); 
      myAnnotation.title = [[ann objectAtIndex:i] objectForKey:@"Name"]; 
      myAnnotation.subtitle = [[ann objectAtIndex:i] objectForKey:@"Address"]; 
      myAnnotation.icon = [[ann objectAtIndex:0] objectForKey:@"Icon"]; 

      [mapView addAnnotation:myAnnotation]; 
      [annotations addObject:myAnnotation]; 



      // Calculating distance 
      CLLocation *pinLocation = [[CLLocation alloc] 
             initWithLatitude:realLatitude 
             longitude:realLongitude]; 

      CLLocation *userLocation = [[CLLocation alloc] 
             initWithLatitude:mapView.userLocation.coordinate.latitude 
             longitude:mapView.userLocation.coordinate.longitude]; 

      CLLocationDistance distance = [pinLocation distanceFromLocation:userLocation]; 

      // NSLog(@"Distance: %4.0f m.", distance); 


      NSString *dist = [NSString stringWithFormat:@"%4.0f m.", distance]; 
      [ann setValue:dist forKey:@"Distance"]; 


     } 



    } 

Answer 1

您可以添加所有的值在一些數組，然後你可以用它在不同的字典，以節省。

此線之後：

// NSLog(@"Distance: %4.0f m.", distance); 

添加：

NSString *dist = [NSString stringWithFormat:@"%4.0f m.", distance]; 
NSMutableDictionary *inDict = [[NSMutableDictionary alloc] init]; 
inDict = [ann objectAtIndex:i]; 
[inDict setValue:dist forKey:@"Distance"];