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POiOS filter an array with an array
 

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    <p>I have an array of strings that I want to use as the filter for another array of dictionaries that is created from a plist. For example, if I had a plist of dictionaries that looked like so:</p> <pre><code>Key: Value: car1 audi car2 bmw car3 bmw car4 audi car5 jaguar </code></pre> <p>and my array of strings was "audi, jaguar". How would I code it so that I can create a new array that would return "car1, car4, car5"? Hope this makes sense. Or better yet, how can I walk down this dictionary and filter it based on a value and then create a new array of dictionaries to use.</p> <p>Code:</p> <pre><code>-(void)plotStationAnnotations { desiredDepartments = [[NSMutableArray alloc] init]; BOOL tvfrSwitchStatus = [[NSUserDefaults standardUserDefaults] boolForKey:@"tvfrSwitchStatus"]; BOOL hfdSwitchStatus = [[NSUserDefaults standardUserDefaults] boolForKey:@"hfdSwitchStatus"]; if (tvfrSwitchStatus) { NSString *tvfr = @"TVF&amp;R"; [desiredDepartments addObject:tvfr]; } if (hfdSwitchStatus) { NSString *hfd = @"HFD"; [desiredDepartments addObject:hfd]; } NSLog(@"Array 1 = %@", desiredDepartments); NSString *path = [[NSBundle mainBundle] pathForResource:@"stationAnnotations" ofType:@"plist"]; NSMutableArray *anns = [[NSMutableArray alloc] initWithContentsOfFile:path]; NSMutableArray *newDictionaryArray = [NSMutableArray array]; for (NSDictionary *dictionary in anns) { for (NSString *string in desiredDepartments) { if ([dictionary allKeysForObject:string]) { [newDictionaryArray addObject:dictionary]; break; } } } NSLog(@"Array = %@", keyMutableArray); for (int i = 0; i &lt; [keyMutableArray count]; i++) { float realLatitude = [[[keyMutableArray objectAtIndex:i] objectForKey:@"latitude"] floatValue]; float realLongitude = [[[keyMutableArray objectAtIndex:i] objectForKey:@"longitude"] floatValue]; StationAnnotations *myAnnotation = [[StationAnnotations alloc] init]; CLLocationCoordinate2D theCoordinate; theCoordinate.latitude = realLatitude; theCoordinate.longitude = realLongitude; myAnnotation.coordinate = theCoordinate; myAnnotation.title = [[keyMutableArray objectAtIndex:i] objectForKey:@"station"]; myAnnotation.subtitle = [[keyMutableArray objectAtIndex:i] objectForKey:@"department"]; [mapView addAnnotation:myAnnotation]; } } </code></pre>
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    1. USJon Erickson
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