简单实现安卓里百度地图持续定位

 package com.example.andoridloca; import java.util.List; import java.util.Timer; import java.util.TimerTask; import android.app.Activity; import android.content.ContentValues; import android.content.Intent; import android.database.Cursor; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.text.method.ScrollingMovementMethod; import android.util.Log; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; 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.location.BDNotifyListener;//假如用到位置提醒功能，需要import该类 import com.baidu.location.LocationClientOption.LocationMode; import com.baidu.location.Poi; import com.baidu.mapapi.SDKInitializer; import com.baidu.mapapi.map.MapView; public class MainActivity extends Activity implements OnClickListener{ MapView mMapView = null; public static final String TAG="mian"; StringBuffer sb = new StringBuffer(256); public StringBuilder builder=new StringBuilder(); private Button bt1; private TextView tv1; private DBtools DBhelper; boolean isOpenLocation=false; public LocationClient mLocationClient = null; public BDLocationListener myListener = new MyLocationListener(); @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); SDKInitializer.initialize(getApplicationContext()); setContentView(R.layout.activity_main); DBhelper = new DBtools(this); tv1=(TextView) findViewById(R.id.textView1); tv1.setMovementMethod(new ScrollingMovementMethod()); bt1=(Button) findViewById(R.id.button1); bt1.setOnClickListener(this); mMapView = (MapView) findViewById(R.id.bmapView); 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(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=0; 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1S1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); } @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(); } public class MyLocationListener implements BDLocationListener { @Override public void onReceiveLocation(BDLocation location) { //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 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.i("BaiduLocationApiDem", sb.toString()); DBtools dbhelper=new DBtools(getApplicationContext()); ContentValues initialValues = new ContentValues(); initialValues.put("shijian",location.getTime()); initialValues.put("didian",location.getLatitude()+"--"+location.getLongitude()); dbhelper.open(); dbhelper.insert("path",initialValues); dbhelper.close(); tv1.setText(sb.toString()); } } @Override public void onClick(View arg0) { Thread mytime=new Thread(new ThreadShow()); if(isOpenLocation){ mLocationClient.stop(); isOpenLocation=false; } else{ Toast.makeText(getApplicationContext(), "开启", Toast.LENGTH_SHORT).show(); isOpenLocation=true; //mLocationClient.start(); mytime.start(); } } // handler类接收数据 Handler handler = new Handler() { public void handleMessage(Message msg) { if (msg.what == 1) { Log.i("BaiduLocationApiDem", "加以"); mLocationClient.start(); mLocationClient.requestLocation(); } }; }; // 线程类 class ThreadShow implements Runnable { @Override public void run() { // TODO Auto-generated method stub while (isOpenLocation) { try { mLocationClient.stop(); Thread.sleep(2000); Message msg = new Message(); msg.what = 1; handler.sendMessage(msg); // System.out.println("send..."); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); System.out.println("thread error..."); } } } } } 

 //某段代码如果是这样的话按照逻辑韩式会将mLocationClient所属类的里面逻辑代码执行一遍，具体见MainAvtivity里面的MyLocationListener类内容，但是实际上是不会执行的 mLocationClient.start(); mLocationClient.stop();