Implementation of three positioning methods on Android

Source code introduction

Implementation of three positioning methods for Android: GPS, Baidu Positioning, and Amap Positioning.

Source code running screenshot

Code snippet:

 public   class MainActivity extends Activity implements OnClickListener{ 
  
 private TextView mTextView;
 private Button gpsBtn, baiduBtn, amapBtn; 
      
 //GPS  
 private LocationManager gpsManager;
 //baidu  
 private LocationClient baduduManager;
 //amap  
 private LocationManagerProxy aMapManager; 
  
 @Override  
 protected   void onCreate(Bundle savedInstanceState) {
 super .onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mTextView = (TextView) findViewById(R.id.text);
        gpsBtn = (Button) findViewById(R.id.gps);
        baiduBtn = (Button) findViewById(R.id.baidu);
        amapBtn = (Button) findViewById(R.id.amap); 
          
        gpsBtn.setOnClickListener( this );
        baiduBtn.setOnClickListener( this );
        amapBtn.setOnClickListener( this );
 } 
      
 @Override  
 public   void onClick(View v) {
 switch (v.getId()) {
 case R.id.gps:
 if (gpsBtn.getText().toString().equals( "Open GPS positioning" )) {
 startGps();
 gpsBtn.setText( "Stop GPS positioning" );
 } else {
 stopGps();
 gpsBtn.setText( "Turn on GPS positioning" );
 }
 break ;
 case R.id.baidu:
 if (baiduBtn.getText().toString().equals( "Open Baidu Positioning" )) {
 startBaidu();
 baiduBtn.setText( "Stop Baidu positioning" );
 } else {
 stopBaidu();
 baiduBtn.setText( "Open Baidu Positioning" );
 }
 break ;
 case R.id.amap:
 if (amapBtn.getText().toString().equals( "Open Amap positioning" )) {
 startAmap();
 amapBtn.setText( "Stop Amap positioning" );
 } else {
 stopAmap();
 amapBtn.setText( "Open Amap positioning" );
 }
 break ; 
  
 default :
 break ;
 }
 } 
  
 private   void startAmap() {
        aMapManager = LocationManagerProxy.getInstance( this );
 /*
         * mAMapLocManager.setGpsEnable(false);
 * New method added in version 1.0.2. Setting true means that GPS positioning is included in the hybrid positioning, and false means pure network positioning. The default value is true Location
 * API positioning uses a hybrid positioning method of GPS and network
 *, the first parameter is the positioning provider, the second parameter has a minimum time of 2000 milliseconds, the third parameter has a distance interval in meters, and the fourth parameter is the positioning listener
 */  
        aMapManager.requestLocationUpdates(LocationProviderProxy.AMapNetwork, 2000 , 10 , mAMapLocationListener);
 } 
  
 private   void stopAmap() {
 if (aMapManager != null ) {
            aMapManager.removeUpdates(mAMapLocationListener);
            aMapManager.destroy();
 }
 aMapManager = null ;
 } 
      
 private   void startBaidu() {
 if (baduduManager == null ) {
            baduduManager = new LocationClient( this );
 //Positioning configuration  
            LocationClientOption option = new LocationClientOption();
 // Positioning mode selection, high precision, power saving, device only  
            option.setLocationMode(LocationMode.Hight_Accuracy);
 //Select the type of positioning coordinate system, gcj02, bd09ll, bd09  
            option.setCoorType( "gcj02" );
 // Positioning time interval  
            option.setScanSpan( 1000 );
 //Select the address to locate  
            option.setIsNeedAddress( true );
            baduduManager.setLocOption(option);
 //Callback for successful registration of positioning  
            baduduManager.registerLocationListener(mBdLocationListener);
 }
        baduduManager.start();
 } 
      
 private   void stopBaidu() {
 baduduManager.stop();
 } 
      
  
 private   void startGps() {
 // Get the LocationManager object  
        gpsManager = (LocationManager) getSystemService(LOCATION_SERVICE); 
          
 //provider can be GPS positioning, base station and WIFI positioning  
        String provider = gpsManager.getProvider(LocationManager.GPS_PROVIDER).getName(); 
          
 //3000ms is the positioning interval, 10m is the distance change threshold, gpsListener is the callback interface  
        gpsManager.requestLocationUpdates(provider, 3000 , 10 , gpsListener);
 } 
      
 private   void stopGps() {
        gpsManager.removeUpdates(gpsListener);
 } 
  
 // Create a location listener  
 private LocationListener gpsListener = new LocationListener() { 
          
 //Called when the position changes  
 @Override  
 public   void onLocationChanged(Location location) {
            Log.e( "Location" , "onLocationChanged" );
 double latitude = location.getLatitude();
 double longitude = location.getLongitude();
 float speed = location.getSpeed();
 long time = location.getTime();
            String s = "latitude--->" + latitude
                    + " longitude--->" + longitude
                    + " speed--->" + speed
                    + " time--->" + new Date(time).toLocaleString();
 mTextView.setText( "GPS location\n" + s);
 } 
  
 // Called when provider fails  
 @Override  
 public   void onProviderDisabled(String provider) {
            Log.e( "Location" , "onProviderDisabled" );
 } 
  
 //Called when provider is enabled  
 @Override  
 public   void onProviderEnabled(String provider) {
            Log.e( "Location" , "onProviderEnabled" );
 } 
  
 //Called when the state changes  
 @Override  
 public   void onStatusChanged(String provider, int status, Bundle extras) {
            Log.e( "Location" , "onStatusChanged" );
 }
 }; 
      
 private BDLocationListener mBdLocationListener = new 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){
                sb.append( "\nspeed : " );
                sb.append(location.getSpeed());
                sb.append( "\nsatellite : " );
                sb.append(location.getSatelliteNumber());
                sb.append( "\ndirection : " );
                sb.append( "\naddr : " );
                sb.append(location.getAddrStr());
                sb.append(location.getDirection());
 } else   if (location.getLocType() == BDLocation.TypeNetWorkLocation){
                sb.append( "\naddr : " );
                sb.append(location.getAddrStr());
                sb.append( "\noperationers : " );
                sb.append(location.getOperators());
 }
 mTextView.setText( "Baidu Positioning\n" + sb.toString());
 }
 }; 
      
 private AMapLocationListener mAMapLocationListener = new AMapLocationListener() { 
          
 @Override  
 public   void onStatusChanged(String provider, int status, Bundle extras) { 
              
 } 
          
 @Override  
 public   void onProviderEnabled(String provider) { 
              
 } 
          
 @Override  
 public   void onProviderDisabled(String provider) { 
              
 } 
          
 @Override  
 public   void onLocationChanged(Location location) { 
              
 } 
          
 @Override  
 public   void onLocationChanged(AMapLocation location) {
 if (location != null ) {
                Double geoLat = location.getLatitude();
                Double geoLng = location.getLongitude();
                String cityCode = "" ;
                String desc = "" ;
                Bundle locBundle = location.getExtras();
 if (locBundle != null ) {
                    cityCode = locBundle.getString( "citycode" );
                    desc = locBundle.getString( "desc" );
 }
 String str = ( "Positioning successful: (" + geoLng + "," + geoLat + ")"  
 + "\nAccuracy:" + location.getAccuracy() + "meters"  
 + "\nLocation method:" + location.getProvider() + "\nLocation time:"  
 + new Date(location.getTime()).toLocaleString() + "\nCity code:"  
 + cityCode + "\nLocation Description:" + desc + "\nProvince:"  
                        + location.getProvince() + "\nCity:" + location.getCity()
 + "\nDistrict (county):" + location.getDistrict() + "\nRegion code:" + location
                        .getAdCode());
 mTextView.setText( "Gaode positioning\n" + str);
 }
 }
 }; 
  
 }

Source code link: http://download..com/data/1968757