Android open-source project-travel history

Project name: andtriplog-Travel Diary

A good open-source project for learning and positioning, using Google's positioning system,

However, Google's base stations are very unstable in China and are basically unavailable.

In the spirit of self-help clothing and food, the positioning system of Baidu was changed to a decisive one,

I wrote a tool class for Baidu positioning:

import java.util.List;import android.content.Context;import android.content.Intent;import android.content.SharedPreferences;import android.os.Handler;import android.os.Message;import android.telephony.SmsManager;import android.util.Log;import android.widget.Toast;import com.baidu.location.*;public class LocationUtils {    private Context context;    private boolean isLocationupdate=false;    private String locationInfo;    private Handler mhandler;    private BDLocation bdLocation;    public LocationClient mLocationClient = null;    public MyLocationListenner myListener = new MyLocationListenner();    public LocationUtils(Context context,Handler myhandler){this.context=context;mhandler=myhandler;}class MyLocationListenner implements BDLocationListener{public void onReceiveLocation(BDLocation location) {// TODO Auto-generated method stubLog.d("AndTripLog","onReceiveLocation");if (location == null)return ;Log.d("AndTripLog","onReceiveLocation is not null");bdLocation=location;isLocationupdate=true;locationInfo="Latitude:"+location.getLatitude()+",Longitude:"+location.getLongitude();mhandler.sendEmptyMessage(0);}public void onReceivePoi(BDLocation poiLocation) {// TODO Auto-generated method stubif (poiLocation == null){return ; }}}public String getLocationInfo(){return locationInfo;}public BDLocation getLocation(){return bdLocation;}public void startLocation(){isLocationupdate=false;mLocationClient = new LocationClient(context);setLocationOption();mLocationClient.registerLocationListener(myListener);Log.d("lostprevent","startLocation");mLocationClient.start();}public boolean isupdate(){return isLocationupdate;}public void stopLocation(){isLocationupdate=false;mLocationClient.stop();}private void setLocationOption(){LocationClientOption option = new LocationClientOption();option.setOpenGps(true);option.setServiceName("com.baidu.location.service_v3.3");option.setPoiExtraInfo(false);        option.setAddrType("all");option.setScanSpan(3000);        option.setCoorType("bd09ll");         option.setPriority(LocationClientOption.NetWorkFirst);   option.disableCache(true);mLocationClient.setLocOption(option);}}

For the corresponding permission settings and packages to be added, see the official introduction:

Http://developer.baidu.com/map/geosdk-android-developv3.3.htm

Through this project, you can learn knowledge points well:

1. Positioning System

2. SQLite statement

3. Save the file

4. Email sending

Project source code:

Http://download.csdn.net/detail/txj8612/5353448

Android default positioning system class locationmanager:

  myLocationManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE); myLocationManager.requestLocationUpdates(String provider, long minTime, float minDistance, LocationListener listener)

Provider: Specifies the positioning type: gps_provider is GPS positioning, network_provider is base station positioning

Mintime: Minimum positioning Interval

Mindistance: Minimum positioning Interval

Listener: locates the listener and implements four Abstract methods of the interface locationlistener:

abstract voidonLocationChanged(Location location)                //Called when the location has changed.abstract voidonProviderDisabled(String provider)                //Called when the provider is disabled by the user.abstract voidonProviderEnabled(String provider)                //Called when the provider is enabled by the user.abstract voidonStatusChanged(String provider, int status, Bundle extras)                //Called when the provider status changes.

The location information is obtained from the location in onlocationchanged (location.