iOS开发（第三方使用）——百度地图的简单使用（定位与当前位置的显示）

使用cocoapods导入 pod ‘BaiduMapKit’

在plist添加NSLocationAlwaysUsageDescription

去百度地图开发者中心注册帐号，并创建项目，拿到AK的值

在工程的AppDelegate.m导入头文件BaiduMapAPI_Base/BMKBaseComponent.h、BaiduMapAPI_Map/BMKMapComponent.h

• (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { //百度地图 BMKMapManager *_mapManager = [[BMKMapManager alloc]init]; BOOL ret = [_mapManager start:@"你的AK" generalDelegate:self]; if (!ret) { NSLog(@"manager start failed!"); } return YES; }

在控制器里面导入头文件BaiduMapAPI_Location/BMKLocationService.h、BaiduMapAPI_Map/BMKMapComponent.h并设置代理BMKLocationServiceDelegate,BMKMapViewDelegate

`- (void)viewDidLoad {
[super viewDidLoad];
//初始化BMKLocationService
_locService = [[BMKLocationService alloc]init];
_locService.delegate = self;
//启动LocationService
[_locService startUserLocationService];

_mapView=[[BMKMapView alloc] initWithFrame:self.view.frame];
_mapView.delegate = self; // 此处记得不用的时候需要置nil，否则影响内存的释放
_mapView.mapType = BMKMapTypeStandard;
[_mapView setZoomLevel:19.0];
[self.view addSubview:_mapView];
}

(void)didUpdateBMKUserLocation:(BMKUserLocation *)userLocation
{
BMKCoordinateRegion region;
region.center.latitude = userLocation.location.coordinate.latitude;
region.center.longitude = userLocation.location.coordinate.longitude;

region.span.latitudeDelta = 0.2;
region.span.longitudeDelta = 0.2;
if (_mapView)
{
_mapView.region = region;

}

[_mapView setZoomLevel:19.0];

[_locService stopUserLocationService];//定位完成停止位置更新

//添加当前位置的标注
CLLocationCoordinate2D coord;
coord.latitude = userLocation.location.coordinate.latitude;
coord.longitude = userLocation.location.coordinate.longitude;
BMKPointAnnotation *_pointAnnotation = [[BMKPointAnnotation alloc] init];
_pointAnnotation.coordinate = coord;

CLLocationCoordinate2D pt=(CLLocationCoordinate2D){0,0};
pt=(CLLocationCoordinate2D){coord.latitude,coord.longitude};

dispatch_async(dispatch_get_main_queue(), ^{
[_mapView removeOverlays:_mapView.overlays];
[_mapView setCenterCoordinate:coord animated:true];
[_mapView addAnnotation:_pointAnnotation];

});
}
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