Essential Books

Adding PinPoint Annotation on map

suggest change

For annotating some point of interest on map, we use pin annotation. Now, start by creating annotation object first. 

MKPointAnnotation *pointAnnotation = [[MKPointAnnotation alloc] init];

Now provide coordinate to pointAnnotation,as 

CLLocationCoordinate2D coordinate = CLLocationCoordinate2DMake(23.054625,72.534562);
pointAnnotation.coordinate = coordinate;

Now, provide title and subtitle to annotation, 

pointAnnotation.title = @"XYZ Point";
pointAnnotation.subtitle = @"Ahmedabad Area";

Now, add this annotation to map. 

[self.mapView addAnnotation:pointAnnotation];

Yeaah.. Hurrah.. you have done the job. You can now see point annotation(red coloured pin) at given coordinate.

But now, what if you want to change color of the pin(3 available colors are - Purple,red and green). Then follow this step.

set mapview’s delegate to self, 

self.mapView.delegate = self;

Add MKMapViewDelegate implementation. Now add following method then, 

- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation
{
   // If it's the user location, just return nil, because it have user location's own annotation, if you want to change that, then use this object;
   if ([annotation isKindOfClass:[MKUserLocation class]])
       return nil;

   if ([annotation isKindOfClass:[MKPointAnnotation class]])
   {
       //Use dequed pin if available
       MKAnnotationView *pinView = [mapView dequeueReusableAnnotationViewWithIdentifier:@"PinAnnotationView"];
   
       if (!pinView)
       {
           // If not dequed, then create new.
           pinView = [[MKAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"PinAnnotationView"];
           pinView.canShowCallout = YES;
           pinView.image = [UIImage imageNamed:@"abc.png"];
           pinView.calloutOffset = CGPointMake(0, 32);
       } else {
           pinView.annotation = annotation;
       }
       return pinView;
   }
   return nil;
}
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MKMapView:
* Change map-type
* Add MKMapView
* Set ZoomRegion for Map
* Local search implementation using MKLocalSearch
* OpenStreetMap Tile-Overlay
* Show UserLocation and UserTracking example
* Adding PinPoint Annotation on map
* Simulate a custom location
* 0Scroll to coordinate and zoom-level
* Working With Annotation
* Adjust the map views visible rect in order to display all annotations
Table Of Contents
0 Getting started with iOS
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2 Change Status Bar Color
3 Passing Data between View Controllers
4 Managing the Keyboard
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135 MPMediaPickerDelegate
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143 AirPrint tutorial
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154 WCSessionDelegate
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166 Simulator
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171 Cache online images
172 MVP Architecture
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174 Configure Beacons with CoreBluetooth
175 Core Data
176 Extension for rich Push Notification
177 Profiling with Instruments
178 Application rating review request
179 MyLayout
180 UIFont
181 Simulator Builds
182 Simulating Location Using GPX files
183 Custom methods of selection of UITableViewCells
184 Custom methods of selection of UITableViewCells
185 UISegmentedControl
186 SqlCipher integration
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191 UIFeedbackGenerator
192 UIKit Dynamics with UICollectionView
193 Multicast Delegates
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198 CydiaSubstrate tweak
199 Create a video from images
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210 Contributors