NavInfo Map Navigation Application Development SDK [Navinfo Navigation SDK for Android] is a map navigation client application product development kit based on Android 2.3 version and above. Users can easily construct a variety of interactive applications based on map navigation. The NavInfo map navigation application product development SDK provides basic functions such as 3D map display and operation, location information search, navigation calculation, navigation process management, etc. It can be combined with MPS (GPS, base station, WIFI hybrid positioning) interface to achieve map positioning and other functions, to meet Different application needs of different users.

Feature introduction and experience

• Map Display

                      (For complete code, see the MapViewActivity.java file of the Demo project)
                      // Custom map view
                      private DemoMapView mDemoMapView;
                      // Map rendering control class
                      private MapRenderer mRenderer;
                      /**
                      * Show map,
                      */
                      @Override
                      protected void onCreate (Bundle savedInstanceState) {
                          super.onCreate(savedInstanceState);
                          setContentView(R.layout.mapview);
                          // Initialize the map
                          initMap();
                      }
                      /**
                      * Initialize the map
                      */
                      private void initMap () {
                          try {
                              // load the map
                              mDemoMapView = (DemoMapView) findViewById(R.id.glView_mapview);
                              mDemoMapView.setHandler(handler);     
                          } catch (Exception e) {
                              e.printStackTrace();
                              new MessageBox(this, false).showDialog(e.getMessage());
                          }
                      }
                      /*
                      * Custom map view, all map-related operations can be customized
                      */
                      public class DemoMapView extends MapView {
                          // Initialize the view used to enlarge the drawing
                          // Start simulated navigation
                          // End the simulation navigation
                          // draw a magnified view
                          // Draw the arrow specifying Maneuver
                          // draw the camera
                          // draw multiple routes
                          // draw a single route
                          // Set the route to open Tmc mode
                          // show the route on the map
                          // set the destination
                          // Start counting
                          // Control whether to lock the car
                          // Get the current location of the car
                          // Set the angle of the current car, used to update the angle of the car when navigating
                          // Display a POI message at the specified location on the map
                          // hide the specified route
                          // delete all routes
                          // Map zoom operation
                          // Map zoom out
                          //  ……
                      }
                  

• Overlay

                      (For complete code, see OverlayActivity.java in the Demo project)
                      // Dot
                      Point point = new Point(11638780, 3998076);             // Create a point object
                      CircleOverlay circle = new CircleOverlay(point, 0f);    // Create a point centered on the point object
                      mRenderer.addOverlay(circle);//Draw points on the map
                      // bubble
                      Vector2D pivot = new Vector2D(0.5f, 0.0f);      // Set the offset of the bubble at the point
                      Annotation an = new Annotation(1, point, 1101, pivot);  // Create a bubble with an offset of pivot at the point
                      CalloutStyle calloutStyle = an.getCalloutStyle();       // Get the bubble style
                      calloutStyle.leftIcon = 0;          // The icon to the left of the bubble is empty
                      calloutStyle.rightIcon = 0;         // The icon to the right of the bubble is empty
                      an.setCalloutStyle(calloutStyle);   // Set the display style for the bubble
                      an.setTitle("custom POI point");    // display the title content for the bubble setting
                      mRenderer.addAnnotation(an);        // Add bubbles to the map
                      an.showCallout(true);               // Set the bubble to display
                  

• POI Search

                      (For complete code, see NewSearchActivity.java in the Demo project)
                      /**
                      * Initialization of the engine to be used here mainly uses the POI search engine and graphics engine
                      */
                      private void init () {
                      ……
                      // Initialize the POI search engine
                      mPoiSearch = new PoiSearch()；
                      // Set the search mode:
                      // onlineOnly online search offlineOnly offline search
                      mPoiSearch.setDataPreference(DataPreference.onlineOnly);
                      // Set the search city id
                      mPoiSearch.setCity(cityName); 
                      // Set the search center point
                      mPoiSearch.setCenter(mCenter); // Register search listener callback method
                      // Ride on the map
                      private void drawAnnotation() {
                          mAnnotations.clear();
                          Vector2DF vec = new Vector2DF(0.9f, 0.5f);
                          Point point = new Point();
                          int zlevel = 100;
                          Bitmap icon = BitmapFactory.decodeResource(getResources(), R.drawable.gas);
                          for (int i = 0; i < mPoiItems.size(); i++) {
                              point.x = mPoiItems.get(i).position.x;
                              point.y = mPoiItems.get(i).position.y;
                              CustomAnnotation annot = new CustomAnnotation(zlevel, point, i, vec, icon);
                              annot.setTitle(mPoiItems.get(i).name);
                              mAnnotations.add(annot);
                          }
                          for (int i = 0; i < mAnnotations.size(); i++) {
                              mDemoMapView.getMapRenderer().addAnnotation(mAnnotations.get(i));
                          }
                          if (mPoiItems.size() > 0) {
                              // Mobile Map Center
                              mDemoMapView.setWorldCenter(mPoiItems.get(0).position);
                          }
                      }
  
                      // Delete the point on the map
                      private void clearAnnotation() {
                          for (int i = 0; i < mAnnotations.size(); i++) {
                              mDemoMapView.getMapRenderer().removeAnnotation(mAnnotations.get(i));
                          }
                      }
                  

• Offline Data

                      // Initialize the data, add data load callback
                      OfflineDataStoreManager.getInstance().initData(this);
                      // data loading callback
                      @Override
                      public void onDataSuccess(DatastoreItem[] datastoreItems) {
                          // Data loaded successfully
                          progressBar.setVisibility(View.GONE);
                          this.datastoreItems = datastoreItems;
                          if (datastoreItems != null) {
                              // Set the listView data source
                              DownloadAdapter downloadAdapter = new DownloadAdapter(this, datastoreItems);
                              mListView.setAdapter(downloadAdapter);
                          }
                      }
                      
                      @Override
                      public void onDataFailure() {
                          // Data loading failed
                          progressBar.setVisibility(View.GONE);
                          Toast.makeText(this, "refresh faile", Toast.LENGTH_SHORT).show();
                      }
                      
                      @Override
                      public void onDataCancle() {
                          // data loading canceled
                          progressBar.setVisibility(View.GONE);
                          Toast.makeText(this, "refresh cancel", Toast.LENGTH_SHORT).show();
                      }