百度地图开发（一）——地图定位

（1）BaiDuMapActivity.java

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package intvehapp.intvehapp;

import com.baidu.location.BDLocation;

import com.baidu.location.BDLocationListener;

import com.baidu.location.LocationClient;

import com.baidu.location.LocationClientOption;

import com.baidu.mapapi.SDKInitializer;

import com.baidu.mapapi.map.BaiduMap;

import com.baidu.mapapi.map.MapStatus;

import com.baidu.mapapi.map.MapStatusUpdateFactory;

import com.baidu.mapapi.map.MapView;

import com.baidu.mapapi.map.MyLocationData;

import com.baidu.mapapi.model.LatLng;

import android.app.Activity;

import android.os.Bundle;

public class BaiDuMapActivity extends Activity{

/**

* 定位SDK核心类

*/

private LocationClient locationClient;

/**

* 定位监听

*/

public MyLocationListenner myListener = new MyLocationListenner();

/**

* 百度地图控件

*/

private MapView mapView;

/**

* 百度地图对象

*/

private BaiduMap baiduMap;

boolean isFirstLoc = true; // 是否首次定位

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

SDKInitializer.initialize(getApplicationContext());

setContentView(R.layout.activity_bai_du_map);

/**

* 地图初始化

*/

//获取百度地图控件

mapView = (MapView) findViewById(R.id.bmapView);

//获取百度地图对象

baiduMap = mapView.getMap();

// 开启定位图层

baiduMap.setMyLocationEnabled(true);

/**

* 定位初始化

*/

//声明定位SDK核心类

locationClient = new LocationClient(this);

//注册监听

locationClient.registerLocationListener(myListener);

//定位配置信息

LocationClientOption option = new LocationClientOption();

option.setOpenGps(true); // 打开gps

option.setCoorType("bd09ll"); // 设置坐标类型

option.setScanSpan(1000);//定位请求时间间隔

locationClient.setLocOption(option);

//开启定位

locationClient.start();

}

/**

* 定位SDK监听函数

*/

public class MyLocationListenner implements BDLocationListener {

@Override

public void onReceiveLocation(BDLocation location) {

// map view 销毁后不在处理新接收的位置

if (location == null || mapView == null) {

return;

}

MyLocationData locData = new MyLocationData.Builder()

.accuracy(location.getRadius())

// 此处设置开发者获取到的方向信息，顺时针0-360

.direction(100).latitude(location.getLatitude())

.longitude(location.getLongitude()).build();

baiduMap.setMyLocationData(locData);

if (isFirstLoc) {

isFirstLoc = false;

LatLng ll = new LatLng(location.getLatitude(),

location.getLongitude());

MapStatus.Builder builder = new MapStatus.Builder();

builder.target(ll).zoom(18.0f);

baiduMap.animateMapStatus(MapStatusUpdateFactory.newMapStatus(builder.build()));

}

}

public void onReceivePoi(BDLocation poiLocation) {

}

}

@Override

protected void onPause() {

mapView.onPause();

super.onPause();

}

@Override

protected void onResume() {

mapView.onResume();

super.onResume();

}

@Override

protected void onDestroy() {

// 退出时销毁定位

locationClient.stop();

// 关闭定位图层

baiduMap.setMyLocationEnabled(false);

mapView.onDestroy();

mapView = null;

super.onDestroy();

}

}

（2）activity_bai_du_map.xml：增加百度地图控件

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<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"

android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"

android:paddingRight="@dimen/activity_horizontal_margin"

android:paddingTop="@dimen/activity_vertical_margin"

android:paddingBottom="@dimen/activity_vertical_margin"

tools:context="intvehapp.intvehapp.BaiDuMapActivity">

<com.baidu.mapapi.map.MapView

android:id="@+id/bmapView"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:clickable="true" />

</RelativeLayout>

（3）AndroidManifest.xml：增加百度地图SDK需要的权限、API_KEY和定位服务

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<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

package="intvehapp.intvehapp" >

<!-- 百度地图API所需权限 -->

<uses-permission android:name="android.permission.GET_ACCOUNTS" />

<uses-permission android:name="android.permission.USE_CREDENTIALS" />

<uses-permission android:name="android.permission.MANAGE_ACCOUNTS" />

<uses-permission android:name="android.permission.AUTHENTICATE_ACCOUNTS" />

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

<uses-permission android:name="android.permission.INTERNET" />

<uses-permission android:name="com.android.launcher.permission.READ_SETTINGS" />

<uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />

<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />

<uses-permission android:name="android.permission.READ_PHONE_STATE" />

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

<uses-permission android:name="android.permission.BROADCAST_STICKY" />

<uses-permission android:name="android.permission.WRITE_SETTINGS" />

<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />

<!-- 访问精确位置的权限 -->

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

<application

android:allowBackup="true"

android:icon="@mipmap/ic_launcher"

android:label="@string/app_name"

android:supportsRtl="true"

android:theme="@style/AppTheme" >

<activity android:name=".BaiDuMapActivity" >

<intent-filter>

<action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" />

</intent-filter>

</activity>

<!--百度API_KEY-->

<meta-data

android:name="com.baidu.lbsapi.API_KEY"

android:value="iXDGdZtFiPifnNm6dUEFwDRXYQVeZ37V" />

<!--百度定位服务-->

<service

android:name="com.baidu.location.f"

android:enabled="true"

android:process=":remote" >

</service>

</application>

</manifest>