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iOS 高德地图仿微信发送实时位置

2019年07月24日  | 移动技术网移动技术  | 我要评论

最近项目中要写一个微信那种发送位置的功能。具体功能在于：

- 定位到当前位置

- 可定位当前位置附近的poi

- 可自行搜索目标位置，并展示附近的poi

- 选择当前位置或者选择目标位置进行发送

一.准备工作

1.首先去高德地图官网下载相关的sdk（如下图）：

2.按照高德地图官网的步骤继续添加所需要的依赖库

3.根据项目的bundleid前往高德地图api中创建引用并申请相关的key

到这一步前期的准备工作基本差不多了，当然，我这写的不是很具体，详细的引入高德地图sdk还需要耐心按照高德地图官网sdk一步步的去操作

二.代码部分

1.初始化高德地图sdk

在appledelegate中引入相关头文件，从高德地图应用管理中找到该应用对用的key值，进行高德地图sdk的初始化操作。直接贴代码部分：

#import "appdelegate.h"
#import "viewcontroller.h"
#import <amaplocationkit/amaplocationkit.h>
#import <amapfoundationkit/amapfoundationkit.h>

static nsstring *apikey = @"a1500980e29b7ca7612a46c19e0d2e3a";
@interface appdelegate ()

@end
@implementation appdelegate


- (bool)application:(uiapplication *)application didfinishlaunchingwithoptions:(nsdictionary *)launchoptions {
  self.window = [[uiwindow alloc] initwithframe:[uiscreen mainscreen].bounds];
  [self.window makekeyandvisible];
  self.window.rootviewcontroller = [[uinavigationcontroller alloc] initwithrootviewcontroller:[viewcontroller new]];
  [amapservices sharedservices].apikey = apikey;
  
  return yes;
}

2.定位到用户当前位置

在你需要定位的类中引入与地图相关的头文件

初始化地图view：

- (void)initmapview{
  self.mapview = [[mamapview alloc] initwithframe:cgrectmake(0, 64 + 44, screen_width, 300)];
  self.mapview.delegate = self;
  self.mapview.maptype = mamaptypestandard;
  self.mapview.showsscale = no;
  self.mapview.showscompass = no;
  self.mapview.showsuserlocation = yes;
  [self.view addsubview:self.mapview];
  
  uibutton *localbutton = [uibutton buttonwithtype:uibuttontypecustom];
  localbutton.backgroundcolor = [uicolor redcolor];
  localbutton.frame = cgrectmake(screen_width - 60, 240, 50, 50);
  [localbutton addtarget:self action:@selector(localbuttonaction) forcontrolevents:uicontroleventtouchupinside];
  localbutton.layer.cornerradius = 25;
  localbutton.clipstobounds = yes;
  [localbutton setimage:[uiimage imagenamed:@"定位"] forstate:uicontrolstatenormal];
  [self.mapview addsubview:localbutton];
  
}
// 定位sdk

- (void)configlocationmanager {
  self.locationmanager = [[amaplocationmanager alloc] init];
  [self.locationmanager setdelegate:self];
  [self.locationmanager setdesiredaccuracy:kcllocationaccuracyhundredmeters];
  //单次定位超时时间
  [self.locationmanager setlocationtimeout:6];
  [self.locationmanager setregeocodetimeout:3];
}

开启定位操作：

- (void)locateaction {
  [self showhudinview:self.view hint:@"正在定位..."];
  //带逆地理的单次定位
  [self.locationmanager requestlocationwithregeocode:yes completionblock:^(cllocation *location, amaplocationregeocode *regeocode, nserror *error) {
    if (error) {
      [self showhint:@"定位错误" yoffset:-180];
      nslog(@"locerror:{%ld - %@};",(long)error.code,error.localizeddescription);
      if (error.code == amaplocationerrorlocatefailed) {
        return ;
      }
    }
    //定位信息
    nslog(@"location:%@", location);
    if (regeocode)
    {
      [self hidehud];
      self.currentlocationcoordinate = cllocationcoordinate2dmake(location.coordinate.latitude, location.coordinate.longitude);
      self.city = regeocode.city;
      [self showmappoint];
      [self setcenterpoint];
      self.request.location = [amapgeopoint locationwithlatitude:location.coordinate.latitude longitude:location.coordinate.longitude];
      [self.mapsearch amappoiaroundsearch:self.request];
    }
  }];
}

定位成功之后展示大头针到当前位置（如果一直不显示大头针，检查一下自己是否导入了高德地图的资源文件）：

- (void)showmappoint{
  [_mapview setzoomlevel:15.1 animated:yes];
  [_mapview setcentercoordinate:self.currentlocationcoordinate animated:yes];
}

- (void)setcenterpoint{
  mapointannotation * centerannotation = [[mapointannotation alloc] init];//初始化注解对象
  centerannotation.coordinate = self.currentlocationcoordinate;//定位经纬度
  centerannotation.title = @"";
  centerannotation.subtitle = @"";
  [self.mapview addannotation:centerannotation];//添加注解
  
}
#pragma mark - mamapview delegate
- (maannotationview *)mapview:(mamapview *)mapview
      viewforannotation:(id<maannotation>)annotation {
  if ([annotation iskindofclass:[mapointannotation class]]) {
    static nsstring *pointreuseindentifier = @"pointreuseindentifier";
    mapinannotationview*annotationview = (mapinannotationview*)[mapview dequeuereusableannotationviewwithidentifier:pointreuseindentifier];
    if (annotationview == nil)
    {
      annotationview = [[mapinannotationview alloc] initwithannotation:annotation reuseidentifier:pointreuseindentifier];
    }
    annotationview.canshowcallout= yes;    //设置气泡可以弹出，默认为no
    annotationview.animatesdrop = yes;    //设置标注动画显示，默认为no
    annotationview.draggable = yes;    //设置标注可以拖动，默认为no
    annotationview.pincolor = mapinannotationcolorred;
    return annotationview;
  }
  return nil;
}

地图的代理方法等：

- (void)mapview:(mamapview *)mapview regiondidchangeanimated:(bool)animated{
  [self.mapview removeannotations:self.mapview.annotations];
  
  cllocationcoordinate2d centercoordinate = mapview.region.center;
  self.currentlocationcoordinate = centercoordinate;
  
  mapointannotation * centerannotation = [[mapointannotation alloc] init];
  centerannotation.coordinate = centercoordinate;
  centerannotation.title = @"";
  centerannotation.subtitle = @"";
  [self.mapview addannotation:centerannotation];
  //主动选择地图上的地点
  if (!self.isselectedaddress) {
    [self.tableview setcontentoffset:cgpointmake(0,0) animated:no];
    self.selectedindexpath=[nsindexpath indexpathforrow:0 insection:0];
    self.request.location = [amapgeopoint locationwithlatitude:centercoordinate.latitude longitude:centercoordinate.longitude];
    self.currentpage = 1;
    self.request.page = self.currentpage;
    [self.mapsearch amappoiaroundsearch:self.request];
  }
  self.isselectedaddress = no;
}

包括主动选择地图上的点然后进行附近的搜索，可自定义搜索的内容，定位成功之后用户可以获取到当前的经纬度地址等一系列信息。详细的代码有点多就不一一贴出来了，需要的同学可以点击下面的github地址去下载体验。

github地址:https://github.com/xuzzzzzzzz/xclocation

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