ios 开发 iphone和ipad程序中使用google地图的方法

概述在ios开发iphone的程序中，需要在地图上标记一个或者多个点，同时点击以后可以切换到其他界面 开发步骤说明： 项目框架中加入 Mapkit Framework 在 地图上每一个记号，都是一個MKAnnotationView，也就是UI。而每一個MKAnnotationView都需要有对应的资料 MKAnnotation，这是Protocal，也就是存储每個座坐标所需要用到的资料的地方。因此，我

在ios开发iphone的程序中，需要在地图上标记一个或者多个点，同时点击以后可以切换到其他界面

开发步骤说明：

项目框架中加入 Mapkit Framework

在 地图上每一个记号，都是一個MKAnnotationVIEw，也就是UI。而每一個MKAnnotationVIEw都需要有对应的资料 MKAnnotation，这是Protocal，也就是存储每個座坐标所需要用到的资料的地方。因此，我们要先建立一個使用MKAnnotation的类别。

依照iPhone开发者文件的说明。这个Protocal需要声明三个属性和一个初始化方法。三个属性分別是coordinate、Title、subTitle，和一个方法initWithCoords。

开发步骤：

定义一个MKAnnotation.

////  SD4SAnnotation.h//  Selfdriving////  Created by 泽宇 徐 on 12-6-5.//  copyright (c) 2012年 WenBinGao. All rights reserved.//#import <Foundation/Foundation.h>#import "MapKit/MapKit.h"@interface SD4SAnnotation : NSObject<MKAnnotation>{	CLLocationCoordinate2D  coordinate;	Nsstring   *  Title;	Nsstring  *  subTitle;	    //自己定义的其他信息成员}@property(nonatomic,Readonly)  CLLocationCoordinate2D  coordinate;@property(nonatomic,retain) Nsstring *Title;@property(nonatomic,retain) Nsstring *subTitle;-(ID) initWithCoordinate:(CLLocationCoordinate2D)   temp_coordinate;@end

////  SD4SAnnotation.m//  Selfdriving////  Created by 泽宇 徐 on 12-6-5.//  copyright (c) 2012年 WenBinGao. All rights reserved.//#import "SD4SAnnotation.h"@implementation SD4SAnnotation@synthesize   coordinate;@synthesize Title;@synthesize subTitle;-(ID) initWithCoordinate:(CLLocationCoordinate2D)   temp_coordinate{    if ([super  init])    {        coordinate=temp_coordinate;    }		return  self;}-(voID)  dealloc{    [Title release];    [subTitle release];	[super  dealloc];}@end

在vIEwController文件中实现显示地图，标记点，点击标记点后跳转的功能
vIEwController.h文件

////  SD4SListVIEwController.h//  Selfdriving////  Created by WenBin Gao on 12-5-24.//  copyright (c) 2012年 WenBinGao. All rights reserved.//#import <UIKit/UIKit.h>#import "MapKit/MapKit.h"#import "SD4SAnnotation.h"@interface SD4SListVIEwController : SDBaseVIEwController<CLLocationManagerDelegate,MKMapVIEwDelegate>{   IBOutlet MKMapVIEw * mapVIEw;   NSMutableArray *mapAnnotations;}@property(nonatomic,retain) MKMapVIEw * mapVIEw; //地图控件@property (nonatomic,retain) NSMutableArray *mapAnnotations; //标记点的数组@end

在vIEwController.m文件中实现

////  SD4SListVIEwController.m//  Selfdriving////  Created by WenBin Gao on 12-5-24.//  copyright (c) 2012年 WenBinGao. All rights reserved.//#import "SD4SListVIEwController.h"#import "SD4SDetailVIEwController.h"@interface SD4SListVIEwController ()@end@implementation SD4SListVIEwController@synthesize mapVIEw;@synthesize mapAnnotations;- (ID)initWithNibname:(Nsstring *)nibnameOrNil bundle:(NSBundle *)nibBundleOrNil{    self = [super initWithNibname:nibnameOrNil bundle:nibBundleOrNil];    if (self) {        // Custom initialization            }    return self;}- (voID)vIEwDIDLoad{    [super vIEwDIDLoad];    self.mapVIEw.mapType = MKMapTypestandard;   // also MKMapTypeSatellite or MKMapTypeHybrID        // create a custom navigation bar button and set it to always says "Back"	        // create out annotations array (in this example only 1)    self.mapAnnotations = [[NSMutableArray alloc] initWithCapacity:1];        // annotation for the City of shanghai    CLLocationCoordinate2D cLLocationCoordinate2D  ;    cLLocationCoordinate2D.latitude = 31.223078;    cLLocationCoordinate2D.longitude = 121.4748;        SD4SAnnotation * annotation = [[SD4SAnnotation alloc] initWithCoordinate:cLLocationCoordinate2D];    annotation.Title=@"宝马4S";    annotation.subTitle=@"宝驴他哥";        [self.mapAnnotations insertObject:annotation atIndex:0];    [annotation release];                [self gotolocation];    // finally goto shanghai        [self.mapVIEw removeAnnotations:self.mapVIEw.annotations];  // remove any annotations that exist        [self.mapVIEw addAnnotations:self.mapAnnotations];}- (voID)gotolocation{    NSLog(@"定位上海");    // start off by default in San Francisco    MKCoordinateRegion newRegion;    newRegion.center.latitude = 31.223078;    newRegion.center.longitude = 121.47480;    newRegion.span.latitudeDelta = 0.112872;    newRegion.span.longitudeDelta = 0.109863;        [self.mapVIEw setRegion:newRegion animated:YES];}- (MKAnnotationVIEw *)mapVIEw:(MKMapVIEw *)theMapVIEw vIEwForAnnotation:(ID <MKAnnotation>)annotation{    // if it's the user location,just return nil.    if ([annotation isKindOfClass:[MKUserLocation class]])        return nil;        // handle our two custom annotations    //    if ([annotation isKindOfClass:[SD4SAnnotation class]])    {        // try to dequeue an existing pin vIEw first        static Nsstring* shop4SAnnotationIDentifIEr = @"Shop4SAnnotationIDentifIEr";//4s店        MKPinAnnotationVIEw* pinVIEw = (MKPinAnnotationVIEw *)        [mapVIEw dequeueReusableAnnotationVIEwWithIDentifIEr:shop4SAnnotationIDentifIEr];        if (!pinVIEw)        {            // if an existing pin vIEw was not available,create one            MKPinAnnotationVIEw* customPinVIEw = [[[MKPinAnnotationVIEw alloc]                                                   initWithAnnotation:annotation reuseIDentifIEr:shop4SAnnotationIDentifIEr] autorelease];            customPinVIEw.pincolor = MKPinAnnotationcolorPurple;            customPinVIEw.animatesDrop = YES;            customPinVIEw.canShowCallout = YES;                        // add a detail disclosure button to the callout which will open a new vIEw controller page            //            // note: you can assign a specific call out accessory vIEw,or as MKMapVIEwDelegate you can implement:            //  - (voID)mapVIEw:(MKMapVIEw *)mapVIEw annotationVIEw:(MKAnnotationVIEw *)vIEw calloutAccessoryControlTapped:(UIControl *)control;            //            UIbutton* rightbutton = [UIbutton buttonWithType:UIbuttonTypeDetaildisclosure];            [rightbutton addTarget:self                            action:@selector(showDetails:)                  forControlEvents:UIControlEventtouchUpInsIDe];            customPinVIEw.rightCalloutAccessoryVIEw = rightbutton;                        return customPinVIEw;        }        else        {            pinVIEw.annotation = annotation;        }        return pinVIEw;    }    return nil;}- (voID)vIEwDIDUnload{    [super vIEwDIDUnload];    // Release any retained subvIEws of the main vIEw.    // e.g. self.myOutlet = nil;}- (BOol)shouldautorotatetoInterfaceOrIEntation:(UIInterfaceOrIEntation)interfaceOrIEntation{    return (interfaceOrIEntation == UIInterfaceOrIEntationPortrait);}-(voID) dealloc{    [self.mapAnnotations release];    [self.mapVIEw release];    [super dealloc];}@end

Annotation 集合中有几个坐标点vIEwForAnnotation方法就会被执行几次。因此每次vIEwForAnnotation被执行，我们都要实例化一个MKAnnotationVIEw。 总结

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