打开后自动定位，并显示相关数据。
点击按钮可以刷新数据，未设置自动刷新，省电。。。
自动根据定位模式，亮起GPS或NET灯。
Ref：《第一行代码》郭霖，百度地图官方文档
准备工作：
获取API_Key（AK）参考《第一行代码》，该书写得比较详细。也可参考百度官方文档。
下载 BaiduLBS_AndroidSDK V7.1 基础包：http://lbsyun.baidu.com/index.php?title=android-locsdk/geosdk-android-download
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.lbstest"> <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/> <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/> <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/> <uses-permission android:name="android.permission.CHANGE_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.INTERNET"/> <uses-permission android:name="android.permission.WAKE_LOCK"/> <application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:roundIcon="@mipmap/ic_launcher_round" android:supportsRtl="true" android:theme="@style/AppTheme"> <meta-data android:name="com.baidu.lbsapi.API_KEY" android:value="5HsZfAwGVeuPQIwvEZWyktP37VwaAodG"/> <activity android:name=".MainActivity"> <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"/> </application> </manifest>
activity_main.xml
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent" > <com.baidu.mapapi.map.MapView android:id="@+id/bmapView" android:layout_width="match_parent" android:layout_height="200dp" android:clickable="true" /> <LinearLayout android:orientation = "horizontal" android:gravity="center" android:layout_width="match_parent" android:layout_height="wrap_content"> <RadioButton android:id="@+id/radioGPS" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:text="GPS" /> <RadioButton android:id="@+id/radioNET" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:text="NET" /> <Button android:id="@+id/btn_refresh" android:layout_width="0dp" android:layout_height="wrap_content" android:text="Refresh" android:layout_weight="1.5"/> </LinearLayout> <TextView android:id="@+id/position_text_view" android:layout_width="match_parent" android:layout_height="match_parent"/> </LinearLayout>
MainActivity.java
package com.example.lbstest; import android.content.Intent; import android.content.pm.PackageManager; import android.location.Location; import android.support.v4.app.ActivityCompat; import android.support.v4.content.ContextCompat; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.util.Log; import android.view.Gravity; import android.view.View; import android.widget.Button; import android.widget.RadioButton; import android.widget.TextView; import android.widget.Toast; 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.MapStatusUpdate; import com.baidu.mapapi.map.MapStatusUpdateFactory; import com.baidu.mapapi.map.MapView; import com.baidu.mapapi.map.MyLocationConfiguration; import com.baidu.mapapi.map.MyLocationData; import com.baidu.mapapi.model.LatLng; import java.math.BigDecimal; import java.util.ArrayList; import java.util.List; import java.util.jar.Manifest; public class MainActivity extends AppCompatActivity { public BDLocationListener BaiDuListener = new MylocationListener(); public LocationClient mLocationClient = null; private TextView positionText; private RadioButton rbtnGPS; private RadioButton rbtnNet; private Button btnRefresh; private MapView mapView; private BaiduMap baiduMap; private boolean isFirstLocate = true; private LocationClientOption option = new LocationClientOption(); @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); mLocationClient = new LocationClient(getApplicationContext());//声明LocationClient类 mLocationClient.registerLocationListener(BaiDuListener);//注册监听函数 SDKInitializer.initialize(getApplicationContext());//SDKInitializer调用initialize方法，传入全局的上下文进行初始化操作，地图就会显示出来 setContentView(R.layout.activity_main); mapView = (MapView)findViewById(R.id.bmapView); positionText =(TextView)findViewById(R.id.position_text_view); rbtnGPS = (RadioButton)findViewById(R.id.radioGPS); rbtnNet = (RadioButton)findViewById(R.id.radioNET); btnRefresh = (Button)findViewById(R.id.btn_refresh); rbtnNet.setClickable(false);//Forbidden radiobutton can be clicked rbtnGPS.setClickable(false); baiduMap = mapView.getMap();//获取地图的总控制器BaiduMap类的实例 // 有了BiaduMap类的实例，就可以对地图进行各种各样的操作，比如设置地图的缩放级别以及将地图移动到某一个经纬度上。 baiduMap.setMyLocationEnabled(true);//取消百度地图让”我”显示在地图上的限制 btnRefresh.setOnClickListener(lisenter); List<String> permissionList = new ArrayList<>();// Permission array list , request permissions in one array. if(ContextCompat.checkSelfPermission(MainActivity.this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED){ permissionList.add(android.Manifest.permission.ACCESS_FINE_LOCATION); } if(ContextCompat.checkSelfPermission(MainActivity.this, android.Manifest.permission.READ_PHONE_STATE) != PackageManager.PERMISSION_GRANTED){ permissionList.add(android.Manifest.permission.READ_PHONE_STATE); } if(ContextCompat.checkSelfPermission(MainActivity.this, android.Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED){ permissionList.add(android.Manifest.permission.WRITE_EXTERNAL_STORAGE); } if(!permissionList.isEmpty()){ String[] permissions = permissionList.toArray(new String[permissionList.size()]); ActivityCompat.requestPermissions(MainActivity.this,permissions,1);//request all permissions }else { requestLocation();// Request Location information } } @Override protected void onResume() { super.onResume(); mapView.onResume(); } @Override protected void onPause() { super.onPause(); mapView.onPause(); } @Override protected void onDestroy() { super.onDestroy(); mLocationClient.stop(); mapView.onDestroy(); baiduMap.setMyLocationEnabled(false);//程序退出的时候，关闭我的位置显示功能 } protected void onRefresh(){ finish(); Intent intent = new Intent(MainActivity.this, MainActivity.class); startActivity(intent); } private void initLocation() { option.setCoorType("bd09ll"); //可选，默认gcj02，设置返回的定位结果坐标系 //option.setScanSpan(5000);// 可选，默认0，即仅定位一次，设置发起定位请求的间隔需要大于等于1000ms才是有效的 // option.setLocationMode(LocationClientOption.LocationMode.Battery_Saving); option.setLocationMode(LocationClientOption.LocationMode.Hight_Accuracy); // option.setLocationMode(LocationClientOption.LocationMode.Device_Sensors); option.setOpenGps(true); //可选，默认false,设置是否使用gps option.setIsNeedAddress(true);//可选，设置是否需要地址信息，默认不需要 mLocationClient.setLocOption(option); } private void requestLocation(){ initLocation(); Log.d("map requestLocation:","Run requestLocation ..."); mLocationClient.start(); } private void navigateTo(BDLocation location) { if (isFirstLocate) { LatLng ll = new LatLng(location.getLatitude(), location.getLongitude()); MapStatusUpdate update = MapStatusUpdateFactory.newLatLng(ll);//借助LatLng类实现地图移动到某一个经纬度上 baiduMap.animateMapStatus(update); update = MapStatusUpdateFactory.zoomTo(16f);//百度地图可以将缩放级别的取值范围定在3到19之间，值越大，地图越精细。 baiduMap.animateMapStatus(update); isFirstLocate = false; } MyLocationData.Builder locationBuilder = new MyLocationData.Builder();//借助MyLocationData.Builder类封装经纬度信息 locationBuilder.latitude(location.getLatitude()); locationBuilder.longitude(location.getLongitude()); MyLocationData locationdata = locationBuilder.build(); baiduMap.setMyLocationData(locationdata);//借助MyLocationData.Builder类的build方法，让设备的位置显示在地图上 } @Override public void onRequestPermissionsResult(int requestCode, String[] permissions,int[] grantResults){ switch (requestCode){ case 1: if(grantResults.length >0 ){ for (int result : grantResults){ if(result != PackageManager.PERMISSION_GRANTED){ Toast.makeText(this,"all permission !!!",Toast.LENGTH_SHORT).show(); finish(); return; } } requestLocation(); }else { Toast.makeText(this,"Unkonw error.",Toast.LENGTH_SHORT).show(); finish(); } break; default: } } public class MylocationListener implements BDLocationListener{ @Override public void onReceiveLocation(BDLocation location){ final StringBuilder currentPosition = new StringBuilder(); Log.d("map Listener",location.getLocType()+""); if(location.getLocType() == BDLocation.TypeGpsLocation){ // GPS定位结果 Log.d("map test","GPS"); rbtnGPS.setChecked(true); rbtnNet.setChecked(false); currentPosition.append("[卫星数量]"); currentPosition.append(location.getSatelliteNumber()); //获取卫星数 currentPosition.append(" [速度]"); currentPosition.append(location.getSpeed()); // 单位：公里每小时 currentPosition.append(" [海拔]"); currentPosition.append(location.getAltitude()); //获取海拔高度信息，单位米 currentPosition.append(" [方向]"); currentPosition.append(location.getDirection()); //获取方向信息，单位度 currentPosition.append(" [地址]"); currentPosition.append(location.getAddrStr()); //获取地址信息 currentPosition.append(" GPS定位成功"); currentPosition.append(" "); navigateTo(location); }else if (location.getLocType() == BDLocation.TypeNetWorkLocation){ // Net定位结果 Log.d("map test","net"); rbtnNet.setChecked(true); rbtnGPS.setChecked(false); currentPosition.append("[地址]"); currentPosition.append(location.getAddrStr()); //获取地址信息 currentPosition.append(" [运营商]"); currentPosition.append(location.getOperators()); //获取运营商信息 currentPosition.append(" 网络定位成功！"); currentPosition.append(" "); navigateTo(location); }else if (location.getLocType() == BDLocation.TypeOffLineLocation) { // 离线定位结果 Log.d("map test","Offline"); currentPosition.append(" describe : "); currentPosition.append("离线定位成功，离线定位结果也是有效的"); navigateTo(location); } else if (location.getLocType() == BDLocation.TypeServerError) { currentPosition.append(" describe : "); currentPosition.append("服务端网络定位失败，可以反馈IMEI号和大体定位时间到loc-bugs@baidu.com，会有人追查原因"); } else if (location.getLocType() == BDLocation.TypeNetWorkException) { currentPosition.append(" describe : "); currentPosition.append("网络不同导致定位失败，请检查网络是否通畅"); } else if (location.getLocType() == BDLocation.TypeCriteriaException) { currentPosition.append(" describe : "); currentPosition.append("无法获取有效定位依据导致定位失败，一般是由于手机的原因，处于飞行模式下一般会造成这种结果，可以试着重启手机"); }else { currentPosition.append("定位失败。错误码："); currentPosition.append(location.getLocType()).append(" "); } currentPosition.append("[经度]").append(location.getLongitude()+"").append(" "); currentPosition.append("[维度]").append(location.getLatitude()+"").append(" "); currentPosition.append("[国家]").append(location.getCountry()).append(" "); currentPosition.append("[省份]").append(location.getProvince()).append(" "); currentPosition.append("[城市]").append(location.getCity()).append(" "); currentPosition.append("[区县]").append(location.getDistrict()).append(" "); currentPosition.append("[街道]").append(location.getStreet()); runOnUiThread(new Runnable() { // 利用Activity.runOnUiThread(Runnable)把更新ui的代码创建在Runnable中， // 然后在需要更新ui时，把这个Runnable对象传给Activity.runOnUiThread(Runnable)。 // Runnable对像就能在ui程序中被调用。如果当前线程是UI线程，那么行动是立即执行。 // 如果当前线程不是UI线程,操作是发布到事件队列的UI线程。 @Override public void run() { positionText.setText(currentPosition); } }); } @Override public void onConnectHotSpotMessage(String s, int i) { } } private View.OnClickListener lisenter = new View.OnClickListener() {//侦听器 @Override public void onClick(View view) { Button button = (Button) view;//把点击获得的参数传递给button try{ switch (button.getId()) {//根据按钮id，判断点击了那个按钮，进一步执行相关代码 case R.id.btn_refresh:{ // Toast toast = Toast.makeText(MainActivity.this,"刷新定位数据", Toast.LENGTH_SHORT); toast.setGravity(Gravity.TOP , 0, 250); toast.show(); onRefresh(); break; } default: break; } } catch(Exception e) { } } }; }