Android调用高德地图定位的方法

2019-10-22 18:15:38

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在App中使用地图定位十分常见，购物功能的可以直接定位当前位置，发动态功能可以定位当前位置发出，社交功能可以定位周边用户等等。这里我使用android/243970.html">高德地图定位当前位置并显示地址和经纬度。

github代码传送门

先上效果图：

Android,高德地图定位,高德定位,高德地图

实现步骤：

1. 创建应用获取key：

接入第三方无一例外，去高德地图官网注册账号并创建应用。填入包名和keystore的Sha1。

Android,高德地图定位,高德定位,高德地图

创建应用

获取Sha1，输入命令keytool -v -list -keystore keystore文件路径，我在这里通过控制台获取调试版的：

进入.android目录

cd .android

输入命令获取

keytool -v -list -keystore debug.keystore

过程截图：

Android,高德地图定位,高德定位,高德地图

创建完成获取Key：

Android,高德地图定位,高德定位,高德地图

2. 接入SDK

添加定位库

compile 'com.amap.api:location:latest.integration'

添加2D地图库

compile 'com.amap.api:map2d:latest.integration'

添加地图权限：

 <uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /> <uses-permission android:name="android.permission.READ_PHONE_STATE" /> <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" /> <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" /> <uses-permission android:name="android.permission.CHANGE_CONFIGURATION" /> <uses-permission android:name="android.permission.WAKE_LOCK" /> <uses-permission android:name="android.permission.WRITE_SETTINGS" />

在<application></application>中设置地图key

  <meta-data   android:name="com.amap.api.v2.apikey"   android:value="57b811b21061501ee320e171568f0dac" />

3. 代码实现（带每一步功能注释）：

实现思路：创建MapView显示地图；设置定位定位监听，设置定位参数，在activate激活后启动定位；在定位回调中获取经纬度，在将地图移动到定位位置，在该经纬度上添加覆盖图标。详细代码如下：

地图控件：

  <com.amap.api.maps2d.MapView    android:id="@+id/mapview"    android:layout_width="match_parent"    android:layout_height="match_parent"/>

定位类AmapActivity完整代码：

import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import com.amap.api.location.AMapLocation;import com.amap.api.maps2d.AMap;import com.amap.api.maps2d.CameraUpdateFactory;import com.amap.api.maps2d.LocationSource;import com.amap.api.maps2d.MapView;import com.amap.api.maps2d.model.LatLng;public class AmapActivity extends AppCompatActivity implements LocationSource {  private MapView mapView;  private AMap aMap;  private LocationSource.OnLocationChangedListener mListener = null;//定位监听器  private LocationUtil locationUtil;  @Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_amap);    mapView = (MapView) findViewById(R.id.mapview);    mapView.onCreate(savedInstanceState);    init();  }  private void init() {    if(aMap == null){      aMap = mapView.getMap();    }    setLocationCallBack();    //设置定位监听    aMap.setLocationSource(this);    //设置缩放级别    aMap.moveCamera(CameraUpdateFactory.zoomTo(15));    //显示定位层并可触发，默认false    aMap.setMyLocationEnabled(true);  }  private void setLocationCallBack(){    locationUtil = new LocationUtil();    locationUtil.setLocationCallBack(new LocationUtil.ILocationCallBack() {      @Override      public void callBack(String str,double lat,double lgt,AMapLocation aMapLocation) {        //根据获取的经纬度，将地图移动到定位位置        aMap.moveCamera(CameraUpdateFactory.changeLatLng(new LatLng(lat,lgt)));        mListener.onLocationChanged(aMapLocation);        //添加定位图标        aMap.addMarker(locationUtil.getMarkerOption(str,lat,lgt));      }    });  }  //定位激活回调  @Override  public void activate(OnLocationChangedListener onLocationChangedListener) {    mListener = onLocationChangedListener;    locationUtil.startLocate(getApplicationContext());  }  @Override  public void deactivate() {    mListener = null;  }  @Override  protected void onPause() {    super.onPause();    //暂停地图的绘制    mapView.onPause();  }  @Override  protected void onDestroy() {    super.onDestroy();    //销毁地图    mapView.onDestroy();  }  @Override  protected void onResume() {    super.onResume();    //重新绘制加载地图    mapView.onResume();  }  @Override  public void onSaveInstanceState(Bundle outState) {    super.onSaveInstanceState(outState);    mapView.onSaveInstanceState(outState);  }}

定位参数设置和定位回调LocationUtil类完整代码：

import android.content.Context;import android.util.Log;import com.amap.api.location.AMapLocation;import com.amap.api.location.AMapLocationClient;import com.amap.api.location.AMapLocationClientOption;import com.amap.api.location.AMapLocationListener;import com.amap.api.maps2d.model.BitmapDescriptorFactory;import com.amap.api.maps2d.model.LatLng;import com.amap.api.maps2d.model.MarkerOptions;/** * Created by libo on 2018/2/2. */public class LocationUtil implements AMapLocationListener {  private AMapLocationClient aMapLocationClient;  private AMapLocationClientOption clientOption;  private ILocationCallBack callBack;  public void startLocate(Context context){    aMapLocationClient = new AMapLocationClient(context);    //设置监听回调    aMapLocationClient.setLocationListener(this);    //初始化定位参数    clientOption = new AMapLocationClientOption();    clientOption.setLocationMode(AMapLocationClientOption.AMapLocationMode.Battery_Saving);    clientOption.setNeedAddress(true);    clientOption.setOnceLocation(false);    //设置是否强制刷新WIFI，默认为强制刷新    clientOption.setWifiActiveScan(true);    //设置是否允许模拟位置,默认为false，不允许模拟位置    clientOption.setMockEnable(false);    //设置定位间隔    clientOption.setInterval(2000);    aMapLocationClient.setLocationOption(clientOption);    aMapLocationClient.startLocation();  }  //完成定位回调  @Override  public void onLocationChanged(AMapLocation aMapLocation) {    if(aMapLocation != null){      if(aMapLocation.getErrorCode() == 0){        //定位成功完成回调        String country = aMapLocation.getCountry();        String province = aMapLocation.getProvince();        String city = aMapLocation.getCity();        String district = aMapLocation.getDistrict();        String street = aMapLocation.getStreet();        double lat = aMapLocation.getLatitude();        double lgt = aMapLocation.getLongitude();        callBack.callBack(country + province + city + district + street,lat,lgt,aMapLocation);      }else{        //显示错误信息ErrCode是错误码，errInfo是错误信息，详见错误码表。        Log.e("AmapError", "location Error, ErrCode:"            + aMapLocation.getErrorCode() + ", errInfo:"            + aMapLocation.getErrorInfo());      }    }  }  /**   * 自定义图标   * @return   */  public MarkerOptions getMarkerOption(String str,double lat,double lgt){    MarkerOptions markerOptions = new MarkerOptions();    markerOptions.icon(BitmapDescriptorFactory.fromResource(R.mipmap.position));    markerOptions.position(new LatLng(lat,lgt));    markerOptions.title(str);    markerOptions.snippet("纬度:" + lat + "  经度:" + lgt);    markerOptions.period(100);    return markerOptions;  }  public interface ILocationCallBack{    void callBack(String str,double lat,double lgt,AMapLocation aMapLocation);  }  public void setLocationCallBack(ILocationCallBack callBack){    this.callBack = callBack;  }}

错误情况检查：

Key是否配置错误
在onCreate中调用mapView.onCreate(savedInstanceState);
mapView.onPause()、mapView.onDestroy()、mapView.onResume()、mapView.onSaveInstanceState(outState)是否都已调用且不写错
aMap.setMyLocationEnabled(true)设置显示定位层并可触发
手机是否开启定位

好了，调用地图的基本功能完成，更高级的功能还包括Poi检索，附近搜索，路线规划，后续会继续完善该功能。以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持VEVB武林网。

注：相关教程知识阅读请移步到Android开发频道。

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