基础版百度定位核心代码

package bwie.baidumap; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.support.v7.app.AppCompatActivity; import android.util.Log; import android.view.View; 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.location.Poi; import com.baidu.mapapi.SDKInitializer; import com.baidu.mapapi.map.BaiduMap; import com.baidu.mapapi.map.MapStatus; import com.baidu.mapapi.map.MapStatusUpdate; 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 java.util.List; public class MainActivity extends AppCompatActivity { MapView mMapView = null; public LocationClient mLocationClient = null; public BDLocationListener myListener = new MyLocationListener(); private BaiduMap mBaiduMap; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); SDKInitializer.initialize(getApplicationContext()); setContentView(R.layout.activity_main); //获取地图控件引用 mMapView = (MapView) findViewById(R.id.bmapView); mBaiduMap = mMapView.getMap(); mBaiduMap.setMapStatus(MapStatusUpdateFactory.newMapStatus(new MapStatus.Builder().zoom(15).build())); mLocationClient = new LocationClient(getApplicationContext()); //声明LocationClient类 mLocationClient.registerLocationListener(myListener); //注册监听函数 initLocation(); } private void initLocation() { LocationClientOption option = new LocationClientOption(); option.setLocationMode(LocationClientOption.LocationMode.Hight_Accuracy);//可选，默认高精度，设置定位模式，高精度，低功耗，仅设备 option.setCoorType("bd09ll");//可选，默认gcj02，设置返回的定位结果坐标系 int span = 100000; // option.setScanSpan(span);//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.setIsNeedAddress(true);//可选，设置是否需要地址信息，默认不需要 option.setOpenGps(true);//可选，默认false,设置是否使用gps option.setLocationNotify(true);//可选，默认false，设置是否当GPS有效时按照1S/1次频率输出GPS结果 option.setIsNeedLocationDescribe(true);//可选，默认false，设置是否需要位置语义化结果，可以在BDLocation.getLocationDescribe里得到，结果类似于“在北京天安门附近” option.setIsNeedLocationPoiList(true);//可选，默认false，设置是否需要POI结果，可以在BDLocation.getPoiList里得到 option.setIgnoreKillProcess(false);//可选，默认true，定位SDK内部是一个SERVICE，并放到了独立进程，设置是否在stop的时候杀死这个进程，默认不杀死 option.SetIgnoreCacheException(false);//可选，默认false，设置是否收集CRASH信息，默认收集 option.setEnableSimulateGps(false);//可选，默认false，设置是否需要过滤GPS仿真结果，默认需要 mLocationClient.setLocOption(option); } public void qiehuan(View view) { mBaiduMap.setMapType(BaiduMap.MAP_TYPE_SATELLITE); } public void putong(View view) { mBaiduMap.setMapType(BaiduMap.MAP_TYPE_NORMAL); } public void dingwei(View view) { mLocationClient.start(); } @Override protected void onDestroy() { super.onDestroy(); //在activity执行onDestroy时执行mMapView.onDestroy()，实现地图生命周期管理 mMapView.onDestroy(); } @Override protected void onResume() { super.onResume(); //在activity执行onResume时执行mMapView. onResume ()，实现地图生命周期管理 mMapView.onResume(); } @Override protected void onPause() { super.onPause(); //在activity执行onPause时执行mMapView. onPause ()，实现地图生命周期管理 mMapView.onPause(); } Handler handler = new Handler() { private double mCurrentLongitude; private double mCurrentLantitude; @Override public void handleMessage(Message msg) { super.handleMessage(msg); BDLocation location = (BDLocation) msg.obj; // 开启定位图层 mBaiduMap.setMyLocationEnabled(true); // 构造定位数据 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(); // 设置定位数据 mBaiduMap.setMyLocationData(locData); mCurrentLantitude = location.getLatitude(); mCurrentLongitude = location.getLongitude(); LatLng point = new LatLng(mCurrentLantitude, mCurrentLongitude); MapStatusUpdate u = MapStatusUpdateFactory.newLatLng(point); mBaiduMap.animateMapStatus(u); Toast.makeText(MainActivity.this,location.getAddrStr(),Toast.LENGTH_SHORT).show(); mLocationClient.stop(); } }; public class MyLocationListener implements BDLocationListener { @Override public void onReceiveLocation(BDLocation location) { Message msg = new Message(); msg.obj = location; handler.sendMessage(msg); //Receive Location StringBuffer sb = new StringBuffer(256); sb.append("time : "); sb.append(location.getTime()); sb.append("\nerror code : "); sb.append(location.getLocType()); sb.append("\nlatitude : "); sb.append(location.getLatitude()); sb.append("\nlontitude : "); sb.append(location.getLongitude()); sb.append("\nradius : "); sb.append(location.getRadius()); if (location.getLocType() == BDLocation.TypeGpsLocation) {// GPS定位结果 sb.append("\nspeed : "); sb.append(location.getSpeed());// 单位：公里每小时 sb.append("\nsatellite : "); sb.append(location.getSatelliteNumber()); sb.append("\nheight : "); sb.append(location.getAltitude());// 单位：米 sb.append("\ndirection : "); sb.append(location.getDirection());// 单位度 sb.append("\naddr : "); sb.append(location.getAddrStr()); sb.append("\ndescribe : "); sb.append("gps定位成功"); } else if (location.getLocType() == BDLocation.TypeNetWorkLocation) {// 网络定位结果 sb.append("\naddr : "); sb.append(location.getAddrStr()); //运营商信息 sb.append("\noperationers : "); sb.append(location.getOperators()); sb.append("\ndescribe : "); sb.append("网络定位成功"); } else if (location.getLocType() == BDLocation.TypeOffLineLocation) {// 离线定位结果 sb.append("\ndescribe : "); sb.append("离线定位成功，离线定位结果也是有效的"); } else if (location.getLocType() == BDLocation.TypeServerError) { sb.append("\ndescribe : "); sb.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) { sb.append("\ndescribe : "); sb.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) { sb.append("\ndescribe : "); sb.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"); } sb.append("\nlocationdescribe : "); sb.append(location.getLocationDescribe());// 位置语义化信息 List<Poi> list = location.getPoiList();// POI数据 if (list != null) { sb.append("\npoilist size = : "); sb.append(list.size()); for (Poi p : list) { sb.append("\npoi= : "); sb.append(p.getId() + " " + p.getName() + " " + p.getRank()); } } Log.e("BaiduLocationApiDem", sb.toString()); } } }