Android 百度地图 SDK

Android

今天研究了百度地图 Android SDK，照着例程实现了定位功能。在实现的过程中遇到了一些麻烦，现在记录一下。

官方网址

Android 定位 SDK 的官方网址是：http://lbsyun.baidu.com/index.php?title=android-locsdk ，里面有详细的参考教程（吐槽一下，写得不够好）。

开发步骤

网页中的“开发指南”中，有详细说明，不重复造轮子。

1. 获取密钥
2. 配置环境
3. 获取位置

注意事项

• 将 SDK 的 so 文件导入 Eclipse 工程中的 libs 目录时，尽量将所有 so 文件都复制进去，如下图所示。

• AndroidManifest 文件中，要声明 Service，同时 Application 中声明 name，全局初始化。

参考链接：http://blog.csdn.net/u010940300/article/details/43488207

代码

DEMO 下载：链接: http://pan.baidu.com/s/1pK7GIcb 密码: mh8f

DemoApplication.java

package com.example.mymap;
import android.app.Application;
import com.baidu.mapapi.SDKInitializer;
public class DemoApplication extends Application {
    @Override
    public void onCreate() {
        super.onCreate();
        // 在使用 SDK 各组间之前初始化 context 信息，传入 ApplicationContext
        SDKInitializer.initialize(this);
    }
}

MainActivity.java

package com.example.mymap;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.RadioGroup;
import android.widget.RadioGroup.OnCheckedChangeListener;
import com.baidu.location.BDLocation;
import com.baidu.location.BDLocationListener;
import com.baidu.location.LocationClient;
import com.baidu.location.LocationClientOption;
import com.baidu.mapapi.map.BaiduMap;
import com.baidu.mapapi.map.BitmapDescriptor;
import com.baidu.mapapi.map.BitmapDescriptorFactory;
import com.baidu.mapapi.map.MapStatus;
import com.baidu.mapapi.map.MapStatusUpdateFactory;
import com.baidu.mapapi.map.MapView;
import com.baidu.mapapi.map.MyLocationConfiguration;
import com.baidu.mapapi.map.MyLocationConfiguration.LocationMode;
import com.baidu.mapapi.map.MyLocationData;
import com.baidu.mapapi.model.LatLng;
public class MainActivity extends Activity {
    // 定位相关
    LocationClient mLocClient;
    public MyLocationListenner myListener = new MyLocationListenner();
    private LocationMode mCurrentMode;
    BitmapDescriptor mCurrentMarker;
    private static final int accuracyCircleFillColor = 0xAAFFFF88;
    private static final int accuracyCircleStrokeColor = 0xAA00FF00;
    MapView mMapView;
    BaiduMap mBaiduMap;
    // UI相关
    OnCheckedChangeListener radioButtonListener;
    Button requestLocButton;
    boolean isFirstLoc = true; // 是否首次定位
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        requestLocButton = (Button) findViewById(R.id.button1);
        mCurrentMode = LocationMode.NORMAL;
        requestLocButton.setText("普通");
        OnClickListener btnClickListener = new OnClickListener() {
            public void onClick(View v) {
                switch (mCurrentMode) {
                case NORMAL:
                    requestLocButton.setText("跟随");
                    mCurrentMode = LocationMode.FOLLOWING;
                    mBaiduMap
                            .setMyLocationConfigeration(new MyLocationConfiguration(
                                    mCurrentMode, true, mCurrentMarker));
                    break;
                case COMPASS:
                    requestLocButton.setText("普通");
                    mCurrentMode = LocationMode.NORMAL;
                    mBaiduMap
                            .setMyLocationConfigeration(new MyLocationConfiguration(
                                    mCurrentMode, true, mCurrentMarker));
                    break;
                case FOLLOWING:
                    requestLocButton.setText("罗盘");
                    mCurrentMode = LocationMode.COMPASS;
                    mBaiduMap
                            .setMyLocationConfigeration(new MyLocationConfiguration(
                                    mCurrentMode, true, mCurrentMarker));
                    break;
                default:
                    break;
                }
            }
        };
        requestLocButton.setOnClickListener(btnClickListener);
        RadioGroup group = (RadioGroup) this.findViewById(R.id.radioGroup);
        radioButtonListener = new OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(RadioGroup group, int checkedId) {
                if (checkedId == R.id.defaulticon) {
                    // 传入null则，恢复默认图标
                    mCurrentMarker = null;
                    mBaiduMap
                            .setMyLocationConfigeration(new MyLocationConfiguration(
                                    mCurrentMode, true, null));
                }
                if (checkedId == R.id.customicon) {
                    // 修改为自定义marker
                    mCurrentMarker = BitmapDescriptorFactory
                            .fromResource(R.drawable.icon_geo);
                    mBaiduMap
                            .setMyLocationConfigeration(new MyLocationConfiguration(
                                    mCurrentMode, true, mCurrentMarker,
                                    accuracyCircleFillColor,
                                    accuracyCircleStrokeColor));
                }
            }
        };
        group.setOnCheckedChangeListener(radioButtonListener);
        // 地图初始化
        mMapView = (MapView) findViewById(R.id.bmapView);
        mBaiduMap = mMapView.getMap();
        // 开启定位图层
        mBaiduMap.setMyLocationEnabled(true);
        // 定位初始化
        mLocClient = new LocationClient(this);
        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();
    }
    /**
     * 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 || mMapView == 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();
            mBaiduMap.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);
                mBaiduMap.animateMapStatus(MapStatusUpdateFactory
                        .newMapStatus(builder.build()));
            }
        }
        public void onReceivePoi(BDLocation poiLocation) {
        }
    }
    @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
        mLocClient.stop();
        // 关闭定位图层
        mBaiduMap.setMyLocationEnabled(false);
        mMapView.onDestroy();
        mMapView = null;
        super.onDestroy();
    }
}

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.mymap"
    android:versionCode="1"
    android:versionName="1.0" >
    <uses-sdk
        android:minSdkVersion="14"
        android:targetSdkVersion="21" />
    <supports-screens
        android:anyDensity="true"
        android:largeScreens="true"
        android:normalScreens="false"
        android:resizeable="true"
        android:smallScreens="true" />
    <uses-permission android:name="com.android.launcher.permission.READ_SETTINGS" />
    <!-- 这个权限用于进行网络定位 -->
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <!-- 这个权限用于访问GPS定位 -->
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <!-- 用于访问wifi网络信息，wifi信息会用于进行网络定位 -->
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
    <!-- 获取运营商信息，用于支持提供运营商信息相关的接口 -->
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <!-- 用于读取手机当前的状态 -->
    <uses-permission android:name="android.permission.READ_PHONE_STATE" />
    <!-- 写入扩展存储，向扩展卡写入数据，用于写入离线定位数据 -->
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" />
    <!-- 访问网络，网络定位需要上网 -->
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.GET_TASKS" />
    <application
        android:name="com.example.mymap.DemoApplication"
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <meta-data
            android:name="com.baidu.lbsapi.API_KEY"
            android:value="LSBdCjaNswoilnnX9me7w7EC5oH46QbV" />
        <activity
            android:name=".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>
        <service
            android:name="com.baidu.location.f"
            android:enabled="true"
            android:process=":remote" >
        </service>
    </application>
</manifest>