百度地图api以及定位api的开发实现定位功能

首先，通过百度地图api的主页点击Android SDK申请一个key,按照百度首页操作即可.另本文主要是讲解如何创建一个android的定位功能,首先创建一个工程，导入百度api的包文件，按照百度地图官网操作即可.下面贴出代码配置 AndroidManifest.xml 加入一些相关操作权限以及该应用对于百度地图api的支持，

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.maylor.demo"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="19" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
          <service
            android:name="com.baidu.location.f"
            android:enabled="true"
            android:process=":remote" >
        </service>
        <activity
            android:name="com.maylor.demo.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
     <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" />

    <permission android:name="android.permission.BAIDU_LOCATION_SERVICE" >
    </permission>

    <uses-permission android:name="android.permission.BAIDU_LOCATION_SERVICE" >
    </uses-permission>
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" >
    </uses-permission>
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" >
    </uses-permission>
    <uses-permission android:name="android.permission.INTERNET" >
    </uses-permission>
    <uses-permission android:name="android.permission.ACCESS_MOCK_LOCATION" >
    </uses-permission>
    <!-- <uses-permission android:name="android.permission.WRITE_APN_SETTINGS"></uses-permission> -->
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" >
    </uses-permission>
    <uses-permission android:name="com.android.launcher.permission.READ_SETTINGS" />
    <uses-permission android:name="android.permission.WAKE_LOCK" >
    </uses-permission>
    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
    <uses-permission android:name="android.permission.ACCESS_GPS" />
    <uses-permission android:name="android.permission.READ_PHONE_STATE" />
    <uses-permission android:name="android.permission.READ_CONTACTS" />
    <uses-permission android:name="android.permission.CALL_PHONE" />
    <uses-permission android:name="android.permission.READ_SMS" />
    <uses-permission android:name="android.permission.SEND_SMS" />
    <!-- SDK1.5需要android.permission.GET_TASKS权限判断本程序是否为当前运行的应用? -->
    <uses-permission android:name="android.permission.GET_TASKS" />
    <uses-permission android:name="android.permission.CAMERA" >
    </uses-permission>
    <uses-permission android:name="android.permission.RECORD_AUDIO" >
    </uses-permission>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" >
    </uses-permission>
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
    <uses-permission android:name="android.permission.BROADCAST_STICKY" />
    <uses-permission android:name="android.permission.WRITE_SETTINGS" />
    <!-- 来电消音 -->
    <uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS" >
    </uses-permission>
    <uses-permission android:name="android.permission.READ_PHONE_STATE" />
    <uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />

    <supports-screens
        android:anyDensity="true"
        android:largeScreens="true"
        android:normalScreens="false"
        android:resizeable="true"
        android:smallScreens="true" />
</manifest>

另外要设置activity_main.xml文件，加入地图控件

<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:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >
 <com.baidu.mapapi.map.MapView android:id="@+id/bmapsView"  
                    android:layout_width="fill_parent"  
                    android:layout_height="fill_parent"  
                    android:clickable="true" />  

</RelativeLayout>

最后就是MainActivity.java的代码了

package com.maylor.demo;

import android.app.Activity;
import android.content.Context;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.util.AttributeSet;
import android.util.Log;
import android.view.Menu;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.RadioGroup;
import android.widget.RadioGroup.OnCheckedChangeListener;
import android.widget.TextView;
import android.widget.Toast;
import com.maylor.demo.R;
import com.baidu.location.BDLocation;
import com.baidu.location.BDLocationListener;
import com.baidu.location.LocationClient;
import com.baidu.location.LocationClientOption;
import com.baidu.mapapi.BMapManager;
import com.baidu.mapapi.map.LocationData;
import com.baidu.mapapi.map.MapController;
import com.baidu.mapapi.map.MapView;
import com.baidu.mapapi.map.MyLocationOverlay;
import com.baidu.mapapi.map.MyLocationOverlay.LocationMode;
import com.baidu.mapapi.map.PopupClickListener;
import com.baidu.mapapi.map.PopupOverlay;
import com.baidu.platform.comapi.basestruct.GeoPoint;

/**
 * 此demo用来展示如何结合定位SDK实现定位，并使用MyLocationOverlay绘制定位位置 同时展示如何使用自定义图标绘制并点击时弹出泡泡
 * 
 */
public class MainActivity extends Activity {

	// 定位相关
	LocationClient mLocClient;
	LocationData locData = null;
	public MyLocationListenner myListener = new MyLocationListenner();

	// 定位图层
	MyLocationOverlay myLocationOverlay = null;
	// 弹出泡泡图层
	private View viewCache = null;

	// 地图相关，使用继承MapView的MyLocationMapView目的是重写touch事件实现泡泡处理
	// 如果不处理touch事件，则无需继承，直接使用MapView即可
	MapView mMapView = null; // 地图View
	private MapController mMapController = null;

	// UI相关
	BMapManager mBMapManager = null;

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		/**
		 * 使用地图sdk前需先初始化BMapManager. BMapManager是全局的，可为多个MapView共用，它需要地图模块创建前创建，
		 * 并在地图地图模块销毁后销毁，只要还有地图模块在使用，BMapManager就不应该销毁
		 */
		mBMapManager = new BMapManager(getApplicationContext());
		/**
		 * 如果BMapManager没有初始化则初始化BMapManager
		 */
		mBMapManager.init("8qWmg6SZMeDL3o5GEwWPE9vc", null);
		setContentView(R.layout.activity_main);

		// 地图初始化
		mMapView = (MapView) findViewById(R.id.bmapsView);
		mMapController = mMapView.getController();
		mMapView.getController().setZoom(14);
		mMapView.getController().enableClick(true);
		mMapView.setBuiltInZoomControls(true);

		// 定位初始化
		mLocClient = new LocationClient(this);
		locData = new LocationData();
		mLocClient.registerLocationListener(myListener);
		LocationClientOption option = new LocationClientOption();
		option.setOpenGps(true);// 打开gps
		option.setCoorType("bd09ll"); // 设置坐标类型
		option.setScanSpan(1000);
		mLocClient.setLocOption(option);
		mLocClient.start();
		if (!mLocClient.isStarted()) {
			mLocClient.start();
			mLocClient.requestLocation();
		} else {
			mLocClient.requestLocation();
		}
		mLocClient.requestLocation();
		// 定位图层初始化
		myLocationOverlay = new MyLocationOverlay(mMapView);
		// 设置定位数据
		myLocationOverlay.setData(locData);
		// 添加定位图层
		mMapView.getOverlays().add(myLocationOverlay);
		myLocationOverlay.enableCompass();
		// 修改定位数据后刷新图层生效
		mMapView.refresh();
		mMapView.getController().animateTo(
				new GeoPoint((int) (locData.latitude * 1e6),
						(int) (locData.longitude * 1e6)));

	}

	/**
	 * 定位SDK监听函数
	 */
	public class MyLocationListenner implements BDLocationListener {

		@Override
		public void onReceiveLocation(BDLocation location) {
			if (location == null)
				return;

			locData.latitude = location.getLatitude();
			locData.longitude = location.getLongitude();
			// 如果不显示定位精度圈，将accuracy赋值为0即可
			locData.accuracy = location.getRadius();
			// 此处可以设置 locData的方向信息, 如果定位 SDK 未返回方向信息，用户可以自己实现罗盘功能添加方向信息。
			locData.direction = location.getDerect();
			// 更新定位数据
			myLocationOverlay.setData(locData);
			// 更新图层数据执行刷新后生效
			mMapView.refresh();
			// 是手动触发请求或首次定位时，移动到定位点
			// 移动地图到定位点
			Log.d("LocationOverlay", "receive location, animate to it");
			mMapController.animateTo(new GeoPoint(
					(int) (locData.latitude * 1e6),
					(int) (locData.longitude * 1e6)));
		}

		public void onReceivePoi(BDLocation poiLocation) {
			if (poiLocation == null) {
				return;
			}
		}
	}

	@Override
	protected void onPause() {
		mMapView.onPause();
		super.onPause();
	}

	@Override
	protected void onResume() {
		mMapView.onResume();
		super.onResume();
	}

	@Override
	protected void onDestroy() {
		// 退出时销毁定位
		if (mLocClient != null)
			mLocClient.stop();
		mMapView.destroy();
		super.onDestroy();
	}

	@Override
	protected void onSaveInstanceState(Bundle outState) {
		super.onSaveInstanceState(outState);
		mMapView.onSaveInstanceState(outState);

	}

	@Override
	protected void onRestoreInstanceState(Bundle savedInstanceState) {
		super.onRestoreInstanceState(savedInstanceState);
		mMapView.onRestoreInstanceState(savedInstanceState);
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// getMenuInflater().inflate(R.menu.activity_main, menu);
		return true;
	}

}

实体机安装即可