iOS 百度地图获取当前地理位置

//
//  ViewController.m
//  BaiDuDemo
//
//  Created by Chocolate. on 15-3-2.
//  Copyright (c) 2015年 redasen. All rights reserved.
//

#import "ViewController.h"
#import "BMapKit.h"

@interface ViewController () <BMKGeoCodeSearchDelegate,BMKMapViewDelegate, BMKLocationServiceDelegate>
@property (strong, nonatomic) BMKMapView *mapView;
@property (strong, nonatomic) BMKGeoCodeSearch *search;
@property (strong, nonatomic) BMKLocationService *locService;
@end

@implementation ViewController
{
BMKUserLocation *myLocation;
}

- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
_mapView = [[BMKMapView alloc] initWithFrame:self.view.bounds];
[self.view addSubview:_mapView];

_search = [[BMKGeoCodeSearch alloc]init];

//初始化BMKLocationService
_locService = [[BMKLocationService alloc]init];
_locService.delegate = self;
//启动LocationService
[_locService startUserLocationService];
}

-(void)viewWillAppear:(BOOL)animated
{
[_mapView viewWillAppear];
_mapView.delegate = self;
_search.delegate = self;
}

-(void)viewDidAppear:(BOOL)animated
{
[_mapView setShowsUserLocation:YES];
}

-(void)viewWillDisappear:(BOOL)animated
{
[_mapView setShowsUserLocation:NO];
_mapView.delegate = nil;
_search.delegate = nil;
}

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

#pragma mark - BMKLocationServiceDelegate
/**
*在将要启动定位时，会调用此函数
*/
- (void)willStartLocatingUser
{

}

/**
*在停止定位后，会调用此函数
*/
- (void)didStopLocatingUser
{
CLLocationCoordinate2D pt = (CLLocationCoordinate2D){0, 0};

pt = (CLLocationCoordinate2D){myLocation.location.coordinate.latitude, myLocation.location.coordinate.longitude};

BMKReverseGeoCodeOption *option = [[BMKReverseGeoCodeOption alloc]init];
option.reverseGeoPoint = pt;
BOOL result = [_search reverseGeoCode:option];

if(result)
{
NSLog(@"反geo检索发送成功");
}
else
{
NSLog(@"反geo检索发送失败");
}
}

/**
*用户方向更新后，会调用此函数
*@param userLocation 新的用户位置
*/
- (void)didUpdateUserHeading:(BMKUserLocation *)userLocation
{
NSLog(@"heading is %@",userLocation.heading);
}

/**
*用户位置更新后，会调用此函数
*@param userLocation 新的用户位置
*/
- (void)didUpdateBMKUserLocation:(BMKUserLocation *)userLocation
{
if (userLocation != nil) {

NSLog(@"get location success");
myLocation = userLocation;
_mapView.showsUserLocation = NO;
[_locService stopUserLocationService];
}

NSLog(@"didUpdateUserLocation lat %f,long %f",userLocation.location.coordinate.latitude,userLocation.location.coordinate.longitude);
}

/**
*定位失败后，会调用此函数
*@param error 错误号
*/
- (void)didFailToLocateUserWithError:(NSError *)error
{

}

#pragma mark - BMKGeoCodeSearchDelegate

/**
*返回地址信息搜索结果
*@param searcher 搜索对象
*@param result 搜索结BMKGeoCodeSearch果
*@param error 错误号，@see BMKSearchErrorCode
*/
- (void)onGetGeoCodeResult:(BMKGeoCodeSearch *)searcher result:(BMKGeoCodeResult *)result errorCode:(BMKSearchErrorCode)error
{

}

/**
*返回反地理编码搜索结果
*@param searcher 搜索对象
*@param result 搜索结果
*@param error 错误号，@see BMKSearchErrorCode
*/
- (void)onGetReverseGeoCodeResult:(BMKGeoCodeSearch *)searcher result:(BMKReverseGeoCodeResult *)result errorCode:(BMKSearchErrorCode)error
{
UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"" message:result.address delegate:self cancelButtonTitle:@"关闭" otherButtonTitles:nil, nil];
[alert show];
}

@end