上回我们学会了用苹果原生地图的使用，但是在实际开发中我们往往都是使用第三方SDK，因为它们真的很强大而且使用起来也很方便，本文以高德地图SDK为例介绍使用地图定位、地理编码和周边搜索(POI)
1.在开始开发之前你需要去高德开发者平台去注册，以获取开发你当前应用的apikey
2.假设你已经获取了apikey，接下里我们来进行地图应用的开发
首先，配置工程，笔者这里建议使用cocopods自动配置
编辑的Podfile文件
pod 'AMap3DMap', '2.5.0'
#pod 'AMap2DMap' #2D地图SDK(2D地图和3D地图不能同时使用)
pod 'AMapSearch', '3.3.0' #搜索服务SDK
配置info.plist文件：
(1)需要添加NSLocationWhenInUseUsageDescription 或NSLocationAlwaysUsageDescription 字段，以申请定位权限。
(2)iOS9为了增强数据访问安全，将所有的http请求都改为了https，为了能够在iOS9中正常使用地图SDK，请在"Info.plist"中进行如下配置，否则影响SDK的使用。
<key>NSAppTransportSecurity</key>
<dict>
<key>NSAllowsArbitraryLoads</key>
<true/>
</dict>
(3)在iOS9中为了能正常调起高德地图App的功能，必须在"Info.plist"中将高德地图App的URL scheme列为白名单，否则无法调起，配置如下：
<key>LSApplicationQueriesSchemes</key>
<array>
<string>iosamap</string>
</array>
3.代码部分：
在ViewController的 .m文件中导入头文件,并把你的apikey定义成宏方便后面使用
#import "ViewController.h"
#import <MAMapKit/MAMapKit.h>
#import <AMapSearchKit/AMapSearchKit.h>
#define APIKey @"7d4a7b3386ffbef532ff66417b95e7ad"
@interface ViewController ()<MAMapViewDelegate,AMapSearchDelegate,UITableViewDelegate,UITableViewDataSource>
@property(nonatomic,strong) UITableView *tableView;//显示搜索结果
@property(nonatomic,strong) NSMutableArray *dataArray;//数据源数组
@end
@implementation ViewController
{
MAMapView * _mapView;//地图对象
AMapSearchAPI * _search;//搜索对象
CLLocation * _currentLocation;//坐标位置
}
#pragma mark 地图显示和定位
-(void)initMapView{
[MAMapServices sharedServices].apiKey = APIKey;
_mapView = [[MAMapView alloc] initWithFrame:CGRectMake(0, 0,self.view.frame.size.width,self.view.frame.size.height/2.0f)];
_mapView.delegate = self;
[self.view addSubview:_mapView];
}
#pragma mark serach初始化
-(void)initSearch{
[AMapSearchServices sharedServices].apiKey=APIKey;
_search =[[AMapSearchAPI alloc] init];
_search.delegate=self;
}
#pragma mark 逆地理编码
-(void)reGeoCoding{
if (_currentLocation) {
AMapReGeocodeSearchRequest *request =[[AMapReGeocodeSearchRequest alloc] init];
request.location =[AMapGeoPoint locationWithLatitude:_currentLocation.coordinate.latitude longitude:_currentLocation.coordinate.longitude];
[_search AMapReGoecodeSearch:request];
}
}
#pragma mark 搜索请求发起后的回调
/**失败回调*/
-(void)AMapSearchRequest:(id)request didFailWithError:(NSError *)error{
NSLog(@"request: %@------error: %@",request,error);
}
/**成功回调*/
-(void)onReGeocodeSearchDone:(AMapReGeocodeSearchRequest *)request response:(AMapReGeocodeSearchResponse *)response{
//我们把编码后的地理位置，显示到 大头针的标题和子标题上
NSString *title =response.regeocode.addressComponent.city;
if (title.length == 0) {
title = response.regeocode.addressComponent.province;
}
_mapView.userLocation.title = title;
_mapView.userLocation.subtitle = response.regeocode.formattedAddress;
}
#pragma mark 初始化tableview
-(void)initTableView{
self.tableView=[[UITableView alloc] initWithFrame:CGRectMake(0, self.view.frame.size.height/2.0f, self.view.frame.size.width, self.view.frame.size.height/2.0f) style:UITableViewStylePlain];
self.tableView.delegate=self;
self.tableView.dataSource=self;
[self.view addSubview:self.tableView];
}
- (void)viewDidLoad {
[super viewDidLoad];
[self initSearch];
[self initMapView];
[self creatUI];
[self initTableView];
_mapView.showsUserLocation = YES; //YES 为打开定位，NO为关闭定位
[_mapView setUserTrackingMode: MAUserTrackingModeFollow animated:YES];
}
#pragma mark 创建界面
-(void)creatUI{
UIButton *searchButton =[UIButton buttonWithType:UIButtonTypeRoundedRect];
searchButton.frame=CGRectMake(80, CGRectGetHeight(_mapView.bounds)-80,40 , 40);
searchButton.autoresizingMask = UIViewAutoresizingFlexibleRightMargin|UIViewAutoresizingFlexibleTopMargin;
searchButton.backgroundColor=[UIColor whiteColor];
[searchButton setTitle:@"搜索" forState:UIControlStateNormal];
[searchButton addTarget:self
action:@selector(search:) forControlEvents:UIControlEventTouchUpInside];
[_mapView addSubview:searchButton];
}
#pragma mark 搜索点击事件
-(void)search:(UIButton *)sender{
if (_currentLocation==nil||_search==nil) {
NSLog(@"搜索失败");
return;
}
AMapPOIAroundSearchRequest *request=[[AMapPOIAroundSearchRequest alloc] init];
request.location=[AMapGeoPoint locationWithLatitude:_currentLocation.coordinate.latitude longitude:_currentLocation.coordinate.longitude];
request.keywords = @"美食";
[_search AMapPOIAroundSearch:request];
}
#pragma mark 周边搜索回调
-(void)onPOISearchDone:(AMapPOISearchBaseRequest *)request response:(AMapPOISearchResponse *)response{
if (response.pois.count>0) {
self.dataArray = [response.pois mutableCopy];
dispatch_async(dispatch_get_main_queue(), ^{
[self.tableView reloadData];
});
}
}
#pragma mark 懒加载
-(NSMutableArray *)dataArray{
if (!_dataArray) {
_dataArray=[[NSMutableArray alloc] init];
}
return _dataArray;
}
#pragma mark UITableViewDataSource&&UITableViewDelegate
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
NSLog(@"%ld",self.dataArray.count);
return self.dataArray.count;
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
NSString *cellID = @"cell";
UITableViewCell *cell =[tableView dequeueReusableCellWithIdentifier:cellID];
if (cell==nil) {
cell=[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:cellID];
}
AMapPOI *poi = self.dataArray[indexPath.row];
cell.textLabel.text = poi.name;
cell.detailTextLabel.text = poi.address;
return cell;
}
#pragma mark 定位更新回调
-(void)mapView:(MAMapView *)mapView didUpdateUserLocation:(MAUserLocation *)userLocation
updatingLocation:(BOOL)updatingLocation
{
if(updatingLocation)
{
//取出当前位置的坐标
// NSLog(@"latitude : %f,longitude: %f",userLocation.coordinate.latitude,userLocation.coordinate.longitude);
}
_currentLocation = [userLocation.location copy];
[self reGeoCoding];
}
- (void)cancelAllRequests{
NSLog(@"error");
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
值得一提是，之前用cocopods导入最新版的SDK时,不能找到
[MAMapServices sharedServices].apiKey = APIKey;
[AMapSearchServices sharedServices].apiKey=APIKey;
MAMapServices和AMapSearchServices这两个类，因而也不能调用后面的方法，最后实在没办法，笔者就使用了前一个版本 ，然后就发现有这个类了.......如果哪个大神指导怎么回事请告诉笔者，他日，必有重谢
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