[IOS地图开发系类]5、改变大头针MKPinAnnotationView的颜色

//
//  MKPinAnnotationView.h
//  MapKit
//
//  Copyright (c) 2009-2012, Apple Inc. All rights reserved.
//

#import <MapKit/MKAnnotationView.h>

enum {
MKPinAnnotationColorRed = 0,
MKPinAnnotationColorGreen,
MKPinAnnotationColorPurple
};
typedef NSUInteger MKPinAnnotationColor;

@class MKPinAnnotationViewInternal;

MK_CLASS_AVAILABLE(NA, 3_0)
@interface MKPinAnnotationView : MKAnnotationView
{
@private
MKPinAnnotationViewInternal *_pinInternal;
}

@property (nonatomic) MKPinAnnotationColor pinColor;

@property (nonatomic) BOOL animatesDrop;

@end

//
//  CustomAnnotation.h
//  LBS_002_mapview
//
//  Created by liqun on 13-7-25.
//  Copyright (c) 2013年 Block Cheng. All rights reserved.
//

#import <Foundation/Foundation.h>
#import <MapKit/MapKit.h>

#define PIN_RED @"Red"
#define PIN_GREEN @"Green"
#define PIN_PURPLE @"Purple"
@interface CustomAnnotation : NSObject<MKAnnotation>

@property (nonatomic, assign, readonly)     CLLocationCoordinate2D coordinate;
@property (nonatomic, copy, readonly)       NSString *title;
@property (nonatomic, copy, readonly)       NSString *subtitle;
@property (nonatomic, unsafe_unretained) MKPinAnnotationColor pinColor;
- (id) initWithCoordinates:(CLLocationCoordinate2D)paramCoordinates
title:(NSString *)paramTitle
subTitle:(NSString *)paramSubTitle;

+ (NSString *) reusableIdentifierforPinColor :(MKPinAnnotationColor)paramColor;
@end

//
//  CustomAnnotation.m
//  LBS_002_mapview
//
//  Created by liqun on 13-7-25.
//  Copyright (c) 2013年 Block Cheng. All rights reserved.
//

#import "CustomAnnotation.h"

@implementation CustomAnnotation

- (void)dealloc
{

[_subtitle  release];
[_title  release];

[super dealloc];
}
- (id) initWithCoordinates:(CLLocationCoordinate2D)paramCoordinates
title:(NSString *)paramTitle
subTitle:(NSString *)paramSubTitle
{

if (self = [super init]) {
_coordinate = paramCoordinates;
_title = [paramTitle copy];
_subtitle = [paramSubTitle copy];
}

return self;
}

+ (NSString *) reusableIdentifierforPinColor :(MKPinAnnotationColor)paramColor{ NSString *result = nil;
switch (paramColor){
case MKPinAnnotationColorRed:{
result = PIN_RED;
break;
}
case MKPinAnnotationColorGreen:{
result = PIN_GREEN;
break;
}
case MKPinAnnotationColorPurple:{
result = PIN_PURPLE;
break;
}
}
return result;
}
@end

//
//  ViewController.m
//  LBS_002_mapview
//
//  Created by liqun on 13-7-25.
//  Copyright (c) 2013年 Block Cheng. All rights reserved.
//

#import "ViewController.h"
#import <MapKit/MapKit.h>
#import "CustomAnnotation.h"

@interface ViewController ()<CLLocationManagerDelegate,MKMapViewDelegate>
@property (nonatomic,retain)MKMapView* mapView;
@property (nonatomic,retain)CLLocationManager* locationManager;
@property (nonatomic,retain)CLLocation* location;
@property (nonatomic, retain) CLGeocoder *myGeocoder;

@end

@implementation ViewController

- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
MKMapView* map = [[MKMapView alloc] initWithFrame:self.view.frame];
map.mapType = MKMapTypeStandard;
map.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
[self.view addSubview:map];
[map release];
self.mapView = map;
self.mapView.delegate = self;

UIButton *addBt = [UIButton buttonWithType:UIButtonTypeRoundedRect];
addBt.frame = CGRectMake(0, 00, 320, 50);
[addBt setTitle:@"locationMe" forState:UIControlStateNormal];

[ addBt addTarget:self action:@selector(handleLocationMe:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview: addBt];

if ([CLLocationManager locationServicesEnabled]){
self.locationManager = [[CLLocationManager alloc] init];
self.locationManager.delegate = self;
self.locationManager.purpose =
@"To provide functionality based on user's current location.";
[self.locationManager startUpdatingLocation];
} else {
/* Location services are not enabled.
Take appropriate action: for instance, prompt the user to enable location services */
NSLog(@"Location services are not enabled");
}

self.myGeocoder = [[CLGeocoder alloc] init];

}

- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation
{
MKAnnotationView *result = nil;
if ([annotation isKindOfClass:[CustomAnnotation class]] == NO){
return result;
}
if ([mapView isEqual:self.mapView] == NO){
/* We want to process this event only for the Map View
that we have created previously */
return result;
}
/* First, typecast the annotation for which the Map View has
fired this delegate message */
CustomAnnotation *senderAnnotation = (CustomAnnotation *)annotation;
/* Using the class method we have defined in our custom
annotation class, we will attempt to get a reusable
identifier for the pin we are about
to create */
NSString *pinReusableIdentifier =
[CustomAnnotation reusableIdentifierforPinColor:senderAnnotation.pinColor];
/* Using the identifier we retrieved above, we will
attempt to reuse a pin in the sender Map View */
MKPinAnnotationView *annotationView = (MKPinAnnotationView *) [mapView dequeueReusableAnnotationViewWithIdentifier:pinReusableIdentifier];
if (annotationView == nil){
/* If we fail to reuse a pin, then we will create one */
annotationView = [[MKPinAnnotationView alloc] initWithAnnotation:senderAnnotation reuseIdentifier:pinReusableIdentifier];
/* Make sure we can see the callouts on top of
each pin in case we have assigned title and/or
subtitle to each pin */
[annotationView setCanShowCallout:YES];
annotationView.draggable = YES;
annotationView.enabled = YES;

}
/* Now make sure, whether we have reused a pin or created a new one,

that the color of the pin matches the color of the annotation */
annotationView.pinColor = senderAnnotation.pinColor;
//自定义图片时，不能用drop
annotationView.animatesDrop = YES;
result = annotationView;
return result;
}

- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}

-(IBAction)handleLocationMe:(id)sender
{
[self.myGeocoder
reverseGeocodeLocation:self.location completionHandler:^(NSArray *placemarks, NSError *error) {
if (error == nil &&[placemarks count] > 0){
CLPlacemark *placemark = [placemarks objectAtIndex:0];
/* We received the results */
NSLog(@"Country = %@", placemark.country);
NSLog(@"Postal Code = %@", placemark.postalCode);
NSLog(@"Locality = %@", placemark.locality);
NSLog(@"dic = %@", placemark.addressDictionary );
NSLog(@"dic FormattedAddressLines= %@", [placemark.addressDictionary objectForKey:@"FormattedAddressLines"]);
NSLog(@"dic Name = %@", [placemark.addressDictionary objectForKey:@"Name"]);
NSLog(@"dic State = %@", [placemark.addressDictionary objectForKey:@"State"]);
NSLog(@"dic Street = %@", [placemark.addressDictionary objectForKey:@"Street"]);
NSLog(@"dic SubLocality= %@", [placemark.addressDictionary objectForKey:@"SubLocality"]);
NSLog(@"dic SubThoroughfare= %@", [placemark.addressDictionary objectForKey:@"SubThoroughfare"]);
NSLog(@"dic Thoroughfare = %@", [placemark.addressDictionary objectForKey:@"Thoroughfare"]);
CLLocationCoordinate2D location =
CLLocationCoordinate2DMake(self.location.coordinate.latitude, self.location.coordinate.longitude);
/* Create the annotation using the location */

CustomAnnotation *annotation =[[CustomAnnotation alloc] initWithCoordinates:location title:placemark.name subTitle:placemark.thoroughfare];
/* And eventually add it to the map */
annotation.pinColor = MKPinAnnotationColorPurple;
[self.mapView addAnnotation:annotation];
[annotation release];

}
else if (error == nil &&
[placemarks count] == 0){
NSLog(@"No results were returned.");
}
else if (error != nil){
NSLog(@"An error occurred = %@", error);
}
}];
}

- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation{
/* We received the new location */
NSLog(@"Latitude = %f", newLocation.coordinate.latitude);
NSLog(@"Longitude = %f", newLocation.coordinate.longitude);
self.location = newLocation;

}
- (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error{
/* Failed to receive user's location */
}

- (void)dealloc
{
self.mapView = nil;
self.location = nil;
self.locationManager = nil;

[super dealloc];
}

@end