I am new to mapkit and I figured out how to create map pins but there is absolutely no tutorial in cyberspace about how to save map annotation pins in Xcode. Do any of you know how I can do this. Is i core data? is it NSuserdefaults?
I am using Parse to store the longitude and latitude of a map pin, but I can only retrieve one coordinate at a time.
Do any of you have any suggestions where I can pull down multiple annotation pins. How can I save multiple annotation pins and load them on the map??? Please help me.
PFQuery *que = [PFQuery queryWithClassName:#"map"];
[que orderByDescending:#"createdAt"];
que.limit=10;
[que getFirstObjectInBackgroundWithBlock:^(PFObject *object, NSError *error) {
if (!error) {
NSLog(#"%#", [object objectForKey:#"lati"]);
goat.text=[object objectForKey:#"lati"];
goat2.text=[object objectForKey:#"longi"];
NSString *ps;
NSString *ls;
ps=goat.text;
ls=goat2.text;
// int value = [ps intValue];
//int valu = [ls intValue];
NSLog(#"GOO %#", ps);
NSLog(#"GOO %#", ls);
lat=[ps floatValue];
lon =[ls floatValue];
NSMutableArray *locationss=[[NSMutableArray alloc]init];
CLLocationCoordinate2D dizhi;
VP *myann;
myann=[[VP alloc]init];
dizhi.latitude =lat;
dizhi.longitude =lon;
myann.coordinate=dizhi;
myann.title =#"arsenal";
[locationss addObject:myann];
NSLog(#"QAD %f", dizhi.latitude);
NSLog(#"QAD %f", dizhi.longitude);
MKPointAnnotation *point = [[MKPointAnnotation alloc] init];
point.coordinate = myann.coordinate;
point.title = #"Where am I?";
point.subtitle = addre.text;
[mapview addAnnotation:point];
myann=[[VP alloc]init];
dizhi.latitude =lattude;
dizhi.longitude =longtude;
myann.coordinate=dizhi;
myann.title =#"gees";
[locationss addObject:myann];
[mapview addAnnotations:locationss];
}
}];
This is how you can save and load one CLLocationCoordinate2D to NSUserDefaults.
// Save
CLLocationCoordinate2D myCoord = ...
NSData *coordinateData = [NSData dataWithBytes:&myCoord length:sizeof(myCoord)];
[[NSUserDefaults standardUserDefaults] setObject:coordinateData forKey:#"MyCoordinate"];
[[NSUserDefaults standardUserDefaults] synchronize];
// Load
CLLocationCoordinate2D myCoord;
NSData *coordinateData = [[NSUserDefaults standardUserDefaults] objectForKey:#"MyCoordinate"];
[coordinateData getBytes:&myCoord length:sizeof(myCoord)];
Call findObjectsInBackgroundWithBlock: and it will return the array of (up to) 10 location objects for you to iterate over.
Look also at cachePolicy which you could use to have parse SDK store the data for you, then you don't need to worry about Core Data or NSUserDefaults.
Related
In my application, I was published recorded video from particular location. I can get the list of published location details from another service response. so Initially I got that published location details and displayed it on MapView. In MapView the pins are displayed with Cluster effect, so I used kingpin.
Here below I have loaded the Annotations on Map.
- (void)loadLocations:(NSArray *)arrayValues
{
_annotationArray = arrayValues;
[self.clusteringController setAnnotations:[self reSetannotations]];
[self.mapView setZoomEnabled:YES];
[self.mapView setCenterCoordinate:self.mapView.userLocation.coordinate];
[self.mapView setUserTrackingMode:MKUserTrackingModeFollow];
KPGridClusteringAlgorithm *algorithm = [KPGridClusteringAlgorithm new];
algorithm.annotationSize = CGSizeMake(25, 50);
algorithm.clusteringStrategy = KPGridClusteringAlgorithmStrategyTwoPhase;
self.clusteringController = [[KPClusteringController alloc] initWithMapView:self.mapView
clusteringAlgorithm:algorithm];
self.clusteringController.delegate = self;
self.clusteringController.animationOptions = UIViewAnimationOptionCurveEaseOut;
[self.clusteringController setAnnotations:[self annotations]];
NSString * lastobjlat;
double miles;
CLLocation * location = [COMMON currentLocation];
lastobjlat = [NSString stringWithFormat:#"%f",location.coordinate.latitude];
miles = 1.;
double scalingFactor = ABS( (cos(2 * M_PI * [lastobjlat floatValue] / 360.0) ));
MKCoordinateSpan span;
span.latitudeDelta = miles/69.0;
span.longitudeDelta = miles/(scalingFactor * 69.0);
MKCoordinateRegion region;
region.span = span;
region.center = location.coordinate;
[self.mapView setRegion:region animated:YES];
self.mapView.showsUserLocation = YES;
//Call in the below selectAnnotationAction method when I came to this, after I published new one on existed or new locations
if (COMMON.isRecentPublication == YES) {
COMMON.isRecentPublication = NO;
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(.5 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
[self selectAnnotationAction];
});
}
}
//To reset the Annotations
- (NSArray *)reSetannotations
{
NSMutableArray *annotations = [NSMutableArray array];
return annotations;
}
//Here I managed location details on my custom marker class MapAnnotation.
- (NSArray *)annotations {
CLLocationCoordinate2D locationPort;
NSMutableArray *annotations = [NSMutableArray array];
NSString *latitude, *longitude;
if ([_annotationArray count] > 0) {
for (int i = 0; i <[_annotationArray count]; i++){
latitude = [NSString stringWithFormat:#"%#",[[_annotationArray objectAtIndex:i] valueForKey:#"latitude"]];
latitude = [latitude stringByReplacingOccurrencesOfString:#"\n" withString:#""];
latitude = [latitude stringByReplacingOccurrencesOfString:#"\t" withString:#""];
longitude = [NSString stringWithFormat:#"%#",[[_annotationArray objectAtIndex:i] valueForKey:#"longitude"]];
longitude = [longitude stringByReplacingOccurrencesOfString:#"\n" withString:#""];
longitude = [longitude stringByReplacingOccurrencesOfString:#"\t" withString:#""];
latitude = [NSString replaceEmptyStringInsteadOfNull:latitude];
longitude = [NSString replaceEmptyStringInsteadOfNull:longitude];
int publicationRatio = [[[_annotationArray objectAtIndex:i] valueForKey:#"publicationRatio"] intValue];
int publicationCount = [[[_annotationArray objectAtIndex:i] valueForKey:#"publicationsCount"] intValue];
int teazLocationId = [[[_annotationArray objectAtIndex:i] valueForKey:#"objectId"] intValue];
BOOL isUpgrade = [[[_annotationArray objectAtIndex:i] valueForKey:#"isUpgraded"] boolValue];
locationPort = CLLocationCoordinate2DMake([latitude doubleValue] ,
[longitude doubleValue]);
//TODO : This is my custom annotation method
MapAnnotation *a1 = [[MapAnnotation alloc] initWithCoordinate:locationPort
tag:i
publicationRatio:publicationRatio
publicationCount:publicationCount
teazLocationId:teazLocationId isUpgraded:isUpgrade];
a1.itemindex = i + 1;
a1.publicationRatio = publicationRatio;
a1.publicationCount = publicationCount;
a1.teazLocationId = teazLocationId;
a1.isUpgraded = isUpgrade;
a1.coordinate = CLLocationCoordinate2DMake([latitude doubleValue] ,
[longitude doubleValue] );
[annotations addObject:a1];
if (COMMON.isRecentPublication == YES) {
if ([COMMON.recentPublicationLocationID isEqual: #(publishedLocationId)]) {
_recentAnnotationView = [[MKPinAnnotationView alloc] initWithAnnotation:a1 reuseIdentifier:#"cluster"];
}
}
}
}
return annotations;
}
It's not a problem to load Annotations with clustering effect on initial time. But when I published some one from same or different(new also) locations, I need to redirect Map screen(publishing section is other screen) and I need to display that publication detail with Active pin image.
Following steps I made to show the published location detail on Map
I created recentPublicationLocationID as a global variable and store the recentPublishedLocationID from response after published service.
Then this return type method - (NSArray *)annotations(after redirect to mapView I got the location details from another webservice after that it will called),
I have compared with recentPublishedId If existed or not. Then If existed, I have assigned my custom annotation (contains the recentPublished location details) to global MKPinAnnotationView instance - _recentAnnotationView
Then I directly called the didSelectPinAnnotation delegate method from this method - (void)loadLocations:(NSArray *)arrayValues like below,
//Pass recent published location details
if (COMMON.isRecentPublication == YES)
{
COMMON.isRecentPublication = NO;
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(.5 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
[self selectAnnotationAction];
});
}
//selectAnnotationAction
- (void)selectAnnotationAction {
COMMON.isRecentPublication = NO;
COMMON.recentPublicationLocationID = nil;
[self mapView:self.mapView didSelectAnnotationView:_recentAnnotationView];
}
If I directly passed recentPublishedLocation details to didSelectAnnotationView delegate, I can only show the In Active pin instead of Active pin.
Then I debug with breakpoint why I can see the In active pin only ?
Because In this situation the didselect delegate was called and I can see the Active pin image. But it's only within sec.
Because viewForAnnotation delegate was called quickly for other pin annotations so the selected one goes to unselected state
This is the real problem. How can I overcome this work with clusters ?
Because when I displayed that published location detail correctly on map even it should be work with clustering effect. Yes I will zoom back to see the pins with cluster effect .
Finally I got the solution and achieved my requirement using ClusterKit library instead of Kingpin.
This tool really helpful me against possible to achieve append annotations and customize every thing adopt with my requirements.
So it's more helpful to me. Of course all of you.
And this tool supports Apple & Goole maps with Objective c as well as Swift.
I hope this one more helpful to other developers also.
Thanks :)
I have this code where I use NSMutableArray to parse a csv file. There are no errors that stop me from running the app however the map doesn't display anything.
NSString *csvFilePath = [[NSBundle mainBundle] pathForResource:#"Data2" ofType:#"csv"];
NSString *dataStr = [NSString stringWithContentsOfFile:csvFilePath encoding:NSUTF8StringEncoding error:nil];
NSMutableArray *allLinedStrings = [[NSMutableArray alloc]initWithArray:[dataStr componentsSeparatedByString:#"\r"]];
NSMutableArray *latitude = [[NSMutableArray alloc]init];
NSMutableArray *longitude = [[NSMutableArray alloc]init];
NSMutableArray *description = [[NSMutableArray alloc]init];
NSMutableArray *address = [[NSMutableArray alloc]init];
NSMutableArray *temperature = [[NSMutableArray alloc]init];
NSMutableArray *time = [[NSMutableArray alloc]init];
NSMutableArray *ambient = [[NSMutableArray alloc]init];
NSMutableArray *filteredLocations = [NSMutableArray array];
MKMapPoint* pointArr = malloc(sizeof(MKMapPoint) * filteredLocations.count);
for (int idx = 0; idx < [allLinedStrings count]; idx++)
{
NSMutableArray *infos = [[NSMutableArray alloc]initWithArray:[[allLinedStrings objectAtIndex:idx] componentsSeparatedByString:#","]];
if ([infos count] > 1)
{
[latitude addObject:[infos objectAtIndex:4]];
[longitude addObject:[infos objectAtIndex:5]];
[description addObject:[infos objectAtIndex:0]];
[address addObject:[infos objectAtIndex:10]];
[temperature addObject:[infos objectAtIndex:6]];
[time addObject:[infos objectAtIndex:15]];
[ambient addObject:[infos objectAtIndex:8]];
if([[latitude objectAtIndex:4] isEqualToString:#"NULL"] || [[longitude objectAtIndex:5] isEqualToString:#"NULL"] || [[description objectAtIndex:0] isEqualToString:#"NULL"] || [[address objectAtIndex:10]isEqualToString:#"NULL"] || [[temperature objectAtIndex:6] isEqualToString:#"NULL"] || [[time objectAtIndex:15]isEqualToString:#"NULL"] || [[ambient objectAtIndex:8] isEqualToString:#"NULL"]) {continue;}
CLLocationCoordinate2D coordinate;
coordinate.latitude = [[latitude objectAtIndex:4] doubleValue];
coordinate.longitude = [[longitude objectAtIndex:5] doubleValue];
Location *annotation = [[Location alloc] initWithName:[description objectAtIndex:0] address:[address objectAtIndex:10] temperature:[temperature objectAtIndex:6] time:[time objectAtIndex:15] ambient:[ambient objectAtIndex:8] coordinate:coordinate] ;
[mapview addAnnotation:annotation];
[filteredLocations addObject:annotation];
MKMapPoint point = MKMapPointForCoordinate(coordinate);
pointArr[idx] = point;
}
}
self.routeLine = [MKPolyline polylineWithPoints:pointArr count:filteredLocations.count];
[self.mapview addOverlay:self.routeLine];
free(pointArr);
MKMapRect zoomRect = MKMapRectNull;
for (id <MKAnnotation> annotation in mapview.annotations)
{
MKMapPoint annotationPoint = MKMapPointForCoordinate(annotation.coordinate);
MKMapRect pointRect = MKMapRectMake(annotationPoint.x, annotationPoint.y, 0.1, 0.1);
zoomRect = MKMapRectUnion(zoomRect, pointRect);
}
[mapview setVisibleMapRect:zoomRect animated:YES];
self.mapview.delegate = self;
}
I guess there must be something wrong with how I'm calling the objects or maybe the MKMapPoint but I don't manage to find what's blocking the app from displaying the data. I've tried using both "initWithObjects" and removing "if ([infos count] > 1){" but when ran it crashed showing a breakdown point in "NSMutableArray *latitude = [[NSMutableArray alloc]init];".
Based on your previous questions about this project, you want to do the following at a high level:
Parse a CSV file where each line has coordinate data. Ignore lines that have "null" data. (For the purpose of this answer, let's ignore that one could use a pre-built CSV parser, or use a different format altogether.)
Show annotations for lines with "good" data.
Connect all the annotations with a line.
For requirement 1 (R1), you already know how to load the CSV file, loop through the lines, and identify the lines with "null" data.
For requirement 2 (R2), after some research, you know that you can create and add annotations to the map one at a time and the map doesn't need to know ahead of time how many you will add so that means the first two requirements could be done in the same loop.
For requirement 3 (R3), after some research, you know that to create and add a polyline to the map, you need to know ahead of time how many points will be in the line.
For R1 and R2, you will be looping through the lines of the CSV and identify the non-null lines.
So that means you will know how many points will be in the polyline after the loop that handles R1 and R2. That means the polyline must be created after that loop.
But to create the polyline, you need not just the point count but the coordinates for each point as well.
That means while looping through the lines in the CSV, you need to save the coordinate data somewhere (in the same order it appeared in the CSV).
In Objective-C, a convenient structure that allows you to add data to it without knowing in advance how many objects will be added is an NSMutableArray.
So now we have this very high-level plan:
Loop through the CSV file, ignore lines with null data, create and add annotations, add the line data to an NSMutableArray (NSMA).
Create a polyline using the point data in NSMA, add the polyline to the map.
With this plan, we see we need one NSMutableArray. Notice that in the existing code, you have a Location class that holds (or could hold) all the data from each line of the CSV.
That means we could simply add these Location objects to the NSMA. NSMutableArrays can hold any type of object (they don't have to be just NSStrings).
So here's a slightly more detailed plan:
Initialize an NSMutableArray called filteredLocations (eg. NSMutableArray *filteredLocations = [NSMutableArray array];).
Loop through the CSV file, ignore lines with null data, create a Location object and add as an annotation, add the Location object to filteredLocations (eg. [filteredLocations addObject:annotation];).
Initialize (malloc) a C array to hold the points of the polyline with the point count being the count of filteredLocations.
Loop through filteredLocations, add point from filteredLocations to the C array.
Create and add a polyline to the map.
In this plan note we have two separate loops: The first one is for R1 and R2. The second one is for R3.
If required, I will post sample code that implements this plan.
First, just to explain your latest NSRangeException error, it is happening on this line:
if([[latitude objectAtIndex:4] isEqualToString:#"NULL"] || ...
because you've declared latitude as an array and the first time the if executes in the loop, latitude only has one object (a few lines above this if you do [latitude addObject:...). The index of an array starts at zero so the bounds of an array with one object are zero to zero hence the error message saying index 4 beyond bounds [0 .. 0].
There are many other issues with the rest of the code.
There is not enough room in this answer to explain in detail.
I urge you, if possible, to stop, step back and re-start with a much simpler project or tutorials and, most importantly, learn the absolute basics of programming in general.
Here is an example of code that should work based on your sample data:
-(void)viewDidLoad
{
[super viewDidLoad];
self.mapview.delegate = self;
NSString *csvFilePath = [[NSBundle mainBundle] pathForResource:#"Data2" ofType:#"csv"];
NSString *dataStr = [NSString stringWithContentsOfFile:csvFilePath encoding:NSUTF8StringEncoding error:nil];
NSArray *allLinedStrings = [dataStr componentsSeparatedByCharactersInSet:[NSCharacterSet newlineCharacterSet]];
NSMutableArray *filteredLocations = [NSMutableArray array];
for (int idx = 0; idx < [allLinedStrings count]; idx++)
{
NSArray *infos = [[allLinedStrings objectAtIndex:idx] componentsSeparatedByString:#","];
if ([infos count] > 15)
{
NSString *latitude = [infos objectAtIndex:4];
NSString *longitude = [infos objectAtIndex:5];
NSString *description = [infos objectAtIndex:0];
NSString *address = [infos objectAtIndex:10];
NSString *temperature = [infos objectAtIndex:6];
NSString *time = [infos objectAtIndex:15];
NSString *ambient = [infos objectAtIndex:8];
if([latitude isEqualToString:#"NULL"]
|| [longitude isEqualToString:#"NULL"]
|| [description isEqualToString:#"NULL"]
|| [address isEqualToString:#"NULL"]
|| [temperature isEqualToString:#"NULL"]
|| [time isEqualToString:#"NULL"]
|| [ambient isEqualToString:#"NULL"])
{
continue;
}
CLLocationCoordinate2D coordinate;
coordinate.latitude = [latitude doubleValue];
coordinate.longitude = [longitude doubleValue];
Location *annotation = [[Location alloc] initWithName:description
address:address
temperature:temperature
time:time
ambient:ambient
coordinate:coordinate];
[mapview addAnnotation:annotation];
[filteredLocations addObject:annotation];
}
}
MKMapPoint* pointArr = malloc(sizeof(MKMapPoint) * filteredLocations.count);
for (int flIndex = 0; flIndex < filteredLocations.count; flIndex++)
{
Location *location = [filteredLocations objectAtIndex:flIndex];
MKMapPoint point = MKMapPointForCoordinate(location.coordinate);
pointArr[flIndex] = point;
}
self.routeLine = [MKPolyline polylineWithPoints:pointArr count:filteredLocations.count];
[self.mapview addOverlay:self.routeLine];
free(pointArr);
[self.mapview showAnnotations:self.mapview.annotations animated:YES];
}
As the question says I am trying to add pins to my map based on the coordinates returned by my php file. Said file returns the following results
[{"dogid":"1","latitude":"15.435786","longitude":"-21.318447"},{"dogid":"1","latitude":"14.00000","longitude":"-18.536711"}]
What I am doing (well I believe i am) is taking the values from the link and saving them to a string. Secondly, save that string value to an array. Then, I go thru this array and save out the latitude and longitude and assign it to CLLocationCordinate 2dcoord. After whch I expect both pins to be dropped on whatever location they received.
However, what occurs is: Upon running the program, when it arrives on this lin
for (NSDictionary *row in locations) {
the loop is not run to assign the values, and it jumps to the end. Oddly, a single pin is dropped on the map (thou location doesnt appear to be the values that it waas passed).
Would appreciate a little incite into the matter.
Thanks
- (void)viewDidAppear:(BOOL)animated
{
NSMutableArray *annotations = [[NSMutableArray alloc] init];
NSURL *myURL =[NSURL URLWithString:#"link.php"];
NSError *error=nil;
NSString *str=[NSString stringWithContentsOfURL:myURL encoding:NSUTF8StringEncoding error:&error];
CLLocationCoordinate2D coord;
NSArray *locations=[NSArray arrayWithContentsOfFile:str];
for (NSDictionary *row in locations) {
NSNumber *latitude = [row objectForKey:#"latitude"];
NSNumber *longitude = [row objectForKey:#"longitude"];
// NSString *title = [row objectForKey:#"title"];
//Create coordinates from the latitude and longitude values
coord.latitude = latitude.doubleValue;
coord.longitude = longitude.doubleValue;
}
MKPointAnnotation *pin = [[MKPointAnnotation alloc] init];
pin.coordinate = coord;
[self.mapView addAnnotation:pin];
}
It looks like you are trying to save api response to and Array.
Api always returns json string which is NSString.
You need to convert decode json string.
In your case
NSString *str=[NSString stringWithContentsOfURL:myURL encoding:NSUTF8StringEncoding error:&error];
you need to decode str with [NSJSONSerialization JSONObjectWithData:<#(NSData )#> options:<#(NSJSONReadingOptions)#> error:<#(NSError *)#>] which give you proper array of dictionary.
Hope it will help you
I'm getting the same issue as described in following SO questions:
(The route lines is not following the streets when I zoom in)
MapKit - Make route line follow streets when map zoomed in
and
Route drawing on Google Maps for iOS not following the street lines
But seems there are no any answer which solved mentioned issue.
I'm adding to points to the my GMSMapView map by following function:
-(void) addPointToMap:(CLLocationCoordinate2D) coordinate
{
CLLocationCoordinate2D position = CLLocationCoordinate2DMake(
coordinate.latitude,
coordinate.longitude);
GMSMarker *marker = [GMSMarker markerWithPosition:position];
marker.map = mapView_;
[waypoints_ addObject:marker];
NSString *positionString = [[NSString alloc] initWithFormat:#"%f,%f",
coordinate.latitude,coordinate.longitude];
[waypointStrings_ addObject:positionString];
if([waypoints_ count]>1){
NSString *sensor = #"false";
NSArray *parameters = [NSArray arrayWithObjects:sensor, waypointStrings_,
nil];
NSArray *keys = [NSArray arrayWithObjects:#"sensor", #"waypoints", nil];
NSDictionary *query = [NSDictionary dictionaryWithObjects:parameters
forKeys:keys];
MDDirectionService *mds=[[MDDirectionService alloc] init];
SEL selector = #selector(addDirections:);
[mds setDirectionsQuery:query
withSelector:selector
withDelegate:self];
}
}
and here are setDirectionsQuery function:
static NSString *kMDDirectionsURL = #"http://maps.googleapis.com/maps/api/directions/json?";
- (void)setDirectionsQuery:(NSDictionary *)query withSelector:(SEL)selector
withDelegate:(id)delegate{
NSArray *waypoints = [query objectForKey:#"waypoints"];
NSString *origin = [waypoints objectAtIndex:0];
int waypointCount = [waypoints count];
int destinationPos = waypointCount -1;
NSString *destination = [waypoints objectAtIndex:destinationPos];
NSString *sensor = [query objectForKey:#"sensor"];
NSMutableString *url =
[NSMutableString stringWithFormat:#"%#&origin=%#&destination=%#&sensor=%#",
kMDDirectionsURL,origin,destination, sensor];
if(waypointCount>2) {
[url appendString:#"&waypoints=optimize:true"];
int wpCount = waypointCount-2;
for(int i=1;i<wpCount;i++){
[url appendString: #"|"];
[url appendString:[waypoints objectAtIndex:i]];
}
}
url = [url
stringByAddingPercentEscapesUsingEncoding: NSASCIIStringEncoding];
_directionsURL = [NSURL URLWithString:url];
[self retrieveDirections:selector withDelegate:delegate];
}
Note: I have followed this Google tutorial and modified it a little bit:
https://www.youtube.com/watch?v=AdV7bCWuDYg
Thanks in advance, any help will be appreciated!
Finally I have found solution, Thanks to the WWJD's last edit in his question!
Route drawing on Google Maps for iOS not following the street lines
From the answer:
What I basically did before was that I was getting and working only with the information I'm receiving in the routes while if you check the JSON file you're receiving from Google Directions API, you'll see that you receive much more information in the and the . This is the information we need to produce the proper results and the right polyline.
I would like to plot markers on Google Maps for iOS, and this by including JSON file that will includes longitude and latitude. I can do it manually in the code, by replacing the values.
The problem is that I don't know how to show new markers on the map from JSON file.
Here is my code :
- (void)addDefaultMarkers {
// Add a custom 'glow' marker around Sydney.
GMSMarker *sydneyMarker = [[GMSMarker alloc] init];
sydneyMarker.title = #"Sydney!";
sydneyMarker.icon = [UIImage imageNamed:#"glow-marker"];
sydneyMarker.position = CLLocationCoordinate2DMake(25.062718, 55.130761);
sydneyMarker.map = mapView_;
GMSMarker *melbourneMarker = [[GMSMarker alloc] init];
melbourneMarker.title = #"Melbourne!";
melbourneMarker.icon = [UIImage imageNamed:#"arrow"];
melbourneMarker.position = CLLocationCoordinate2DMake(25.100822, 55.17467);
melbourneMarker.map = mapView_;
}
Any ideas on how to do it ?
chech my question in this link, stackoverflow.com/questions/20902732/…. This link will help,
First of all parse the json data. And collect it as array or dictionary, then U can directly plot the value in map
The first two lines are to parse the data into an array
SBJsonParser *jsonParser = [SBJsonParser new];
NSArray *jsonData = (NSArray *) [jsonParser objectWithString:outputData error:nil];
then, the loop should continue till the no. of values,
for(int i=0;i<[jsonData count];i++)
{
NSDictionary *dict=(NSDictionary *)[jsonData objectAtIndex:i];
Nslog(#"%#",dict);
double la=[[dict objectForKey:#"latitude"] doubleValue];
double lo=[[dict objectForKey:#"longitude"] doubleValue];
CLLocation * loca=[[CLLocation alloc]initWithLatitude:la longitude:lo];
CLLocationCoordinate2D coordi=loca.coordinate;
marker=[GMSMarker markerWithPosition:coordi];
marker.snippet = #"Hello World";
marker.animated = YES;
marker.map = mapView;
}