最近公司要做一個(gè)類似與美團(tuán)的東西,讓我用百度地圖來(lái)進(jìn)行定位,并顯示地理信息.

預(yù)覽圖

那么我們要如何做呢,直接上代碼

• 先看看包結(jié)構(gòu),要把需要用到的庫(kù)都要引入進(jìn)來(lái).

  
  
  包結(jié)構(gòu)

注意:appdelegate.mm 后綴一定要加個(gè)m

不然的話編譯會(huì)不通過,好像是因?yàn)樗木幾g原理是c++還是怎樣,要詳細(xì)了解的可以百度.

• 那么來(lái)看控制器代碼

    _locService = [[BMKLocationService alloc]init];//定位功能的初始化
    _locService.delegate = self;//設(shè)置代理位self
    //啟動(dòng)LocationService
    [_locService startUserLocationService];//啟動(dòng)定位服務(wù)
    _geocodesearch = [[BMKGeoCodeSearch alloc] init];
    //編碼服務(wù)的初始化(就是獲取經(jīng)緯度,或者獲取地理位置服務(wù))
    _geocodesearch.delegate = self;//設(shè)置代理為self

這段代碼需要放在viewDidLoad里面
啟動(dòng)定位服務(wù)后,_locService.userLocation.location.coordinate就應(yīng)該會(huì)有值了,也就是說經(jīng)度和緯度都可以獲取出來(lái)了.

• 開始定位的點(diǎn)擊事件,將剛剛定位的經(jīng)緯度取出來(lái)并設(shè)置lable的值

-(void)heheda:(UIButton *)btn{
    NSLog(@"進(jìn)入普通定位態(tài)");
    NSLog(@"定位的經(jīng)度:%f,定位的緯度:%f",_locService.userLocation.location.coordinate.longitude,_locService.userLocation.location.coordinate.latitude);
    self.lon.text = [NSString stringWithFormat:@"%f",_locService.userLocation.location.coordinate.longitude];
    [self.lat setText:[NSString stringWithFormat:@"%f",_locService.userLocation.location.coordinate.latitude]];
}

• 獲取地址的點(diǎn)擊事件

-(void)onClickReverseGeocode  //發(fā)送反編碼請(qǐng)求的.
{
    isGeoSearch = false;
    CLLocationCoordinate2D pt = (CLLocationCoordinate2D){0, 0};//初始化
    if (_locService.userLocation.location.coordinate.longitude!= 0
        && _locService.userLocation.location.coordinate.latitude!= 0) {
        //如果還沒有給pt賦值,那就將當(dāng)前的經(jīng)緯度賦值給pt
        pt = (CLLocationCoordinate2D){_locService.userLocation.location.coordinate.latitude,
            _locService.userLocation.location.coordinate.longitude};
    }
    BMKReverseGeoCodeOption *reverseGeocodeSearchOption = [[BMKReverseGeoCodeOption alloc]init];//初始化反編碼請(qǐng)求
    reverseGeocodeSearchOption.reverseGeoPoint = pt;//設(shè)置反編碼的店為pt
    BOOL flag = [_geocodesearch reverseGeoCode:reverseGeocodeSearchOption];//發(fā)送反編碼請(qǐng)求.并返回是否成功
    if(flag)
    {
        NSLog(@"反geo檢索發(fā)送成功");
    }
    else
    {
        NSLog(@"反geo檢索發(fā)送失敗");
    }
    
}

• 如果發(fā)送成功,百度將會(huì)返回東西給你,然后你可以在下面這個(gè)代理函數(shù)中處理

-(void) onGetReverseGeoCodeResult:(BMKGeoCodeSearch *)searcher result:(BMKReverseGeoCodeResult *)result errorCode:(BMKSearchErrorCode)error
{
       if (error == 0) {
        BMKPointAnnotation* item = [[BMKPointAnnotation alloc]init];
        item.coordinate = result.location;
        item.title = result.address;
        NSString* titleStr;
        NSString* showmeg;
        titleStr = @"反向地理編碼";
        showmeg = [NSString stringWithFormat:@"%@",item.title];
           self.addr.text = showmeg;
        UIAlertView *myAlertView = [[UIAlertView alloc] initWithTitle:titleStr message:showmeg delegate:self cancelButtonTitle:nil otherButtonTitles:@"確定",nil];
        [myAlertView show];
    }
}

效果圖

• 有不明白的還是可以到官網(wǎng)下載demo來(lái)看看
  http://lbsyun.baidu.com/index.php?title=iossdk/sdkiosdev-download
  如果喜歡請(qǐng)給個(gè)贊.