iOS - 百度地图

这段时间，在做百度地图的开发过程中，会遇到一些小问题。做点记录。

开发前期，需要两个链接：

申请密钥：http://lbsyun.baidu.com/index.php?title=iossdk/guide/key

配置开发环境：http://lbsyun.baidu.com/index.php?title=iossdk/guide/buildproject

申请到密钥的时候，要注意BundleID和Xcode的一致。

使用效果：

 

为了减少页面的资源，在主要页面里，只放一张静态图，通过调用百度的静态API生成。用户需要查看详情的时候，再跳到地图的导航。

生成静态图API地址：http://lbsyun.baidu.com/index.php?title=static

        NSString *strCerter = [NSString stringWithFormat:@"%@,%@",_houseModel.map.lng,_houseModel.map.lat];
        NSString *mapUrl = [NSString stringWithFormat:@"http://api.map.baidu.com/staticimage?center=%@&width=%f&height=%@&zoom=11&markers=%@&markerStyles=l,A",strCerter,RFSCREEN_W,@"200",strCerter];
        
        UIImageView *mapImageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, RFSCREEN_W, 200)];
        [mapImageView sd_setImageWithURL:[NSURL URLWithString:mapUrl]];
        [cell addSubview:mapImageView];

转跳到MapController就很简单了，代码如：

//
//  RFHouseMapViewController.m
//  RFHouse
//
//  Created by jiangys on 16/3/29.
//  Copyright © 2016年 Jiangys. All rights reserved.
//

#import "RFHouseMapViewController.h"
#import <BaiduMapAPI_Utils/BMKUtilsComponent.h>
#import <BaiduMapAPI_Map/BMKMapComponent.h>
#import <BaiduMapAPI_Search/BMKSearchComponent.h>

@interface RFHouseMapViewController ()<BMKMapViewDelegate, BMKGeoCodeSearchDelegate,BMKGeneralDelegate>
/** 百度地图 */
@property (nonatomic, strong)  BMKMapView *mapView;
@property (nonatomic, strong)  BMKGeoCodeSearch *geocodesearch;
@property (nonatomic, strong)  BMKMapManager *mapManager;
@end

@implementation RFHouseMapViewController

#pragma mark -- 生命周期

- (void)viewDidLoad {
    [super viewDidLoad];
    
    self.view.backgroundColor = Color_White;
    
    // 要使用百度地图，请先启动BaiduMapManager
    _mapManager = [[BMKMapManager alloc]init];
    BOOL ret = [_mapManager start:@"rUvg0vdlCsdI227Z6I1LoV8xGhZ0ZZwb" generalDelegate:self];
    if (!ret) {
        NSLog(@"manager start failed!");
    }
    
    // 初始化地图
    _geocodesearch = [[BMKGeoCodeSearch alloc]init];
    _mapView = [[BMKMapView alloc] initWithFrame:CGRectMake(0, 0, RFSCREEN_W, RFSCREEN_H)];
    [_mapView setZoomLevel:14];
    [self.view addSubview:_mapView];
    
    [self reverseGeocodeWithLng:_lng lat:_lat];
}

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

-(void)viewWillAppear:(BOOL)animated {
    [_mapView viewWillAppear];
    _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
    _geocodesearch.delegate = self; // 此处记得不用的时候需要置nil，否则影响内存的释放
}

-(void)viewWillDisappear:(BOOL)animated {
    [_mapView viewWillDisappear];
    _mapView.delegate = nil; // 不用时，置nil
    _geocodesearch.delegate = nil; // 不用时，置nil
}

- (void)dealloc {
    if (_geocodesearch != nil) {
        _geocodesearch = nil;
    }
    if (_mapView) {
        _mapView = nil;
    }
}

#pragma mark 百度地图API

// 百度地图：反向geo检索
-(void)reverseGeocodeWithLng:(CGFloat)lng lat:(CGFloat)lat
{
    CLLocationCoordinate2D pt = (CLLocationCoordinate2D){0, 0};
    pt = (CLLocationCoordinate2D){lat, lng};
    BMKReverseGeoCodeOption *reverseGeocodeSearchOption = [[BMKReverseGeoCodeOption alloc]init];
    reverseGeocodeSearchOption.reverseGeoPoint = pt;
    BOOL flag = [_geocodesearch reverseGeoCode:reverseGeocodeSearchOption];
    if(flag)
    {
        RFLog(@"反geo检索发送成功");
    }
    else
    {
        RFLog(@"反geo检索发送失败");
    }
}

// 百度地图：根据anntation生成对应的View
- (BMKAnnotationView *)mapView:(BMKMapView *)view viewForAnnotation:(id <BMKAnnotation>)annotation
{
    NSString *AnnotationViewID = @"annotationViewID";
    //根据指定标识查找一个可被复用的标注View，一般在delegate中使用，用此函数来代替新申请一个View
    BMKAnnotationView *annotationView = [view dequeueReusableAnnotationViewWithIdentifier:AnnotationViewID];
    if (annotationView == nil) {
        annotationView = [[BMKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:AnnotationViewID];
        ((BMKPinAnnotationView*)annotationView).pinColor = BMKPinAnnotationColorRed;
        ((BMKPinAnnotationView*)annotationView).animatesDrop = YES;
    }
    
    annotationView.centerOffset = CGPointMake(0, -(annotationView.frame.size.height * 0.5));
    annotationView.annotation = annotation;
    annotationView.canShowCallout = TRUE;
    return annotationView;
}

// 百度地图：反向地址编码
-(void) onGetReverseGeoCodeResult:(BMKGeoCodeSearch *)searcher result:(BMKReverseGeoCodeResult *)result errorCode:(BMKSearchErrorCode)error
{
    NSArray* array = [NSArray arrayWithArray:_mapView.annotations];
    [_mapView removeAnnotations:array];
    array = [NSArray arrayWithArray:_mapView.overlays];
    [_mapView removeOverlays:array];
    if (error == 0) {
        BMKPointAnnotation* item = [[BMKPointAnnotation alloc]init];
        item.coordinate = result.location;
        item.title = result.address;
        [_mapView addAnnotation:item];
        _mapView.centerCoordinate = result.location;
    }
}

- (void)onGetNetworkState:(int)iError
{
    if (0 == iError) {
        NSLog(@"联网成功");
    }
    else{
        NSLog(@"onGetNetworkState %d",iError);
    }
    
}

- (void)onGetPermissionState:(int)iError
{
    if (0 == iError) {
        NSLog(@"授权成功");
    }
    else {
        NSLog(@"onGetPermissionState %d",iError);
    }
}

@end

要注意Start这里填的是百度的"百度地图iOS SDK开发密钥"

BOOL ret = [_mapManager start:@"rUvg0vdlCsdI227Z6I1LoV8xGhZ0ZZwb" generalDelegate:self];