Hello All, I am VERY new to iOS development. I've spent the last few years programming using the Silverlight API... ...Anyways I think I may have stumbled on a bug. I was following the example in the ArcGIS iOS API for geocoding and for some reason I cannot get the AGSLocator object to return my address candidates in the correct spatial reference. If I specify web mercator (WKID: 102100) I get my candidates back off the coast of Africa (clearly in WGS-84).I am using Xcode v4.2 and I am using the iOS API with Automated Reference Counting enabled.here is some code from my AddressFinder.m file- (IBAction)btnLocate_Click:(id)sender
{
//show progress indicator graphic
self.progressIndicator.hidden = NO;
//collect values from text fields
self.address1 = self.txtAddress1.text;
self.address2 = self.txtAddress2.text;
self.addressCity = self.txtAddressCity.text;
self.addressState = self.txtAddressState.text;
self.addressZip = self.txtAddressZip.text;
...
//package address input for geocoder
self.addressFields = [[NSDictionary alloc]initWithObjectsAndKeys:self.address1, @"Street", self.addressCity, @"City", self.addressState, @"State", self.addressZip, @"ZIP", nil];
//specify return fields for the address candidates coming back
self.outFields = [NSArray arrayWithObjects: @"Score", @"Match_addr", @"StreetName", @"X", @"Y", nil];
//disable UI input while search is in progress
[self ToggleEnableAll:NO];
self.btnLocate.enabled = NO;
self.btnClear.enabled = NO;
//fire up geocoder if applicable
if(self.locationService == nil)
{
if(self.locatorRESTEndpoint != NULL && self.locatorRESTEndpoint != @"")
{
NSURL *locatorURL = [[NSURL alloc] initWithString:self.locatorRESTEndpoint];
self.locationService = [[AGSLocator alloc]initWithURL:locatorURL];
}
else
{
//alert user that no REST endpoint was specified. bad news bears
...
return;
}
}
self.locationService.delegate = self; //AGSLocator object
//hit geocode service and handle output in delegate functions below
[self.locationService locationsForAddress:self.addressFields returnFields:self.outFields outSpatialReference:self.mapSpatialReference];
}
I output the value of 'self.mapSpatialReference.wkid' and I get 102100 as expected. Here's my callback code- (void)locator:(AGSLocator *)locator operation:(NSOperation*)op didFindLocationsForAddress:(NSArray *)candidates
{
if(candidates.count == 0)
{
//alert user that no candidates came back
...
}
else
{
//restore UI
[self ToggleEnableAll:YES];
self.btnLocate.enabled = YES;
self.btnClear.enabled = YES;
//call delegate so that subscribers can handle candidate data
[self.delegate OnFoundCandidates:candidates];
}
//hide progress indicator
self.progressIndicator.hidden = YES;
}
if more than zero candidates come back I handle them on my main view controller. Here is code from the delegate function- (void) OnFoundCandidates : (NSArray *)candidates
{
//this is the callback for the geocoder's "found address candidate" delegate
//here we'll be either putting a point on the map for the best candidate or
//allowing the user to choose his/her intended candidate
if(candidates.count == 1)
{
//put it on the map
AGSAddressCandidate *soleCandidate = [candidates objectAtIndex:0];
if(soleCandidate)
{
//initialise symbol and geometry
AGSPoint *mapPoint = soleCandidate.location;
AGSSimpleMarkerSymbol *sms = [[AGSSimpleMarkerSymbol alloc]initWithColor:[UIColor blueColor]];
//initialise graphic
AGSGraphic *candidateGraphic = [[AGSGraphic alloc]initWithGeometry:mapPoint symbol:sms attributes:nil infoTemplateDelegate:nil];
//transfer attributes from candidate to graphic for callout data display later
[candidateGraphic.attributes addEntriesFromDictionary:soleCandidate.attributes];
//close popover
[self.testController dismissPopoverAnimated:YES];
//add graphic to map
[self.geocodeGraphicsLayer addGraphic:candidateGraphic];
[self.geocodeGraphicsLayer dataChanged];
}
}
else
{
AGSAddressCandidate *oneHundredPercentMatch;
for(AGSAddressCandidate * candidate in candidates)
{
if([[candidate.attributes objectForKey:@"Score"] doubleValue] == 100.0f)
{
oneHundredPercentMatch = candidate;
break;
}
}
if(oneHundredPercentMatch != nil && oneHundredPercentMatch != NULL)
{
NSLog(@"100 percent match: %f, %f ::: %f, %f",oneHundredPercentMatch.location.x, oneHundredPercentMatch.location.y, [[oneHundredPercentMatch.attributes objectForKey:@"X"]doubleValue], [[oneHundredPercentMatch.attributes objectForKey:@"Y"]doubleValue]);
//initialise symbol and geometry
AGSPoint *mapPoint = oneHundredPercentMatch.location;
AGSSimpleMarkerSymbol *sms = [[AGSSimpleMarkerSymbol alloc]initWithColor:[UIColor blueColor]];
//intiialise graphic
AGSGraphic *candidateGraphic = [[AGSGraphic alloc]initWithGeometry:mapPoint symbol:sms attributes:nil infoTemplateDelegate:nil];
//transfer attributes from candidate to graphic for callout data display later
[candidateGraphic.attributes addEntriesFromDictionary:oneHundredPercentMatch.attributes];
//close popover
[self.testController dismissPopoverAnimated:YES];
//add graphic to map
[self.geocodeGraphicsLayer addGraphic:candidateGraphic];
[self.geocodeGraphicsLayer dataChanged];
}
else
{
...
}
}
}
The geocode service i was using is http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Locators/ESRI_Geocode_USA/GeocodeServer. when I use the service in a browser I get the expected results which leads me to believe that the AGSLocator object doesn't support outspatialreference.Sorry for being so verbose. I've been chasing my tail for a while and hope that someone can help.Thanks in advance,Hasheen
