Android Baidu map basic implementation (TAG + GPS)

[Java] package com. baidu. map; import java. util. arrayList; import java. util. list; import android. content. context; import android. graphics. canvas; import android. graphics. color; import android. graphics. paint; import android. graphics. point; import android. graphics. drawable. drawable; import android. location. location; import android. location. locationManager; import android. OS. bundle; import android. widg Et. toast; import com. baidu. mapapi. BMapManager; import com. baidu. mapapi. geoPoint; import com. baidu. mapapi. itemizedOverlay; import com. baidu. mapapi. locationListener; import com. baidu. mapapi. MKAddrInfo; import com. baidu. mapapi. MKDrivingRouteResult; import com. baidu. mapapi. MKPoiResult; import com. baidu. mapapi. MKSearchListener; import com. baidu. mapapi. MKTransitRouteResult; import com. baidu. mapapi. MKWal KingRouteResult; import com. baidu. mapapi. mapActivity; import com. baidu. mapapi. mapController; import com. baidu. mapapi. mapView; import com. baidu. mapapi. myLocationOverlay; import com. baidu. mapapi. overlayItem; import com. baidu. mapapi. poiOverlay; import com. baidu. mapapi. projection; public class BmapActivity extends MapActivity {// defines the map engine management class private BMapManager mapManager; // defines the search service class private MapView map View; private MapController mapController; LocationListener mLocationListener = null; // register this listener when onResume is used. Remove MyLocationOverlay mLocationOverlay = null when onPause is used; // locate the layer private double dLat; private double dLon; @ Override public void onCreate (Bundle savedInstanceState) {super. onCreate (savedInstanceState); setContentView (R. layout. main); // initialize MapActivity mapManager = new BMapManager (getAppl Ication (); // The first parameter of the init method must be filled in with the applied APIKey mapManager. init ("DE7BC8B377AFA895ED0C16F504B5C4FC5E3E149B", null); super. initMapActivity (mapManager); mapView = (MapView) findViewById (R. id. map_View); // set the map mode to traffic map // mapView. setTraffic (true); // set to enable the built-in zoom control mapView. setBuiltInZoomControls (true); mapView. displayZoomControls (true); // set overlay to be displayed during the scaling animation. mapView is not drawn by default. setDrawOverlayWhenZooming (true); mapCo Ntroller = mapView. getController (); mapController. setZoom (16); // locate myself (); // Add the positioning layer mLocationOverlay = new MyLocationOverlay (this, mapView); mapView. getOverlays (). add (mLocationOverlay); Drawable marker = getResources (). getDrawable (R. drawable. da_marker_red); marker. setBounds (0, 0, marker. getIntrinsicWidth (), marker. getIntrinsicHeight (); // Intrinsic inherent mapView. getOverlays (). add (new MyItemiz EdOverlay (marker, this);} // draw class MyItemizedOverlay extends ItemizedOverlay <OverlayItem> {// attribute private Drawable marker; private Context mContext; private List <OverlayItem> geoList = new ArrayList <OverlayItem> (); // constructor public MyItemizedOverlay (Drawable marker, Context context) {super (boundCenterBottom (marker); this. marker = marker; this. mContext = context; // construct the geographic coordinate GeoPoint p1 = New GeoPoint (int) (dLat * 1E6), (int) (dLon * 1E6); geoList. add (new OverlayItem (p1, "P1", "This is my current location"); populate (); // fill execution method} // draw method public void draw (Canvas canvas, MapView mapView, boolean shadow) {// projection, used to convert the pixel Coordinate System on the screen and the coordinate system of the earth's longitude and latitude points. Projection projection = mapView. getProjection (); for (int index = size ()-1; index> = 0; index --) {OverlayItem overlayItem = this. getItem (index); String title = OverlayItem. getTitle (); Point point = projection. toPixels (overlayItem. getPoint (), null); Paint painttext = new Paint (); painttext. setColor (Color. BLACK); painttext. setTextSize (15); canvas. drawText (title, point. x-30, point. y-25, painttext);} super. draw (canvas, mapView, shadow); boundCenterBottom (marker);} // Add member method @ Override protected OverlayItem createItem (int I) {return geoList. get (I );}@ Override public int size () {return geoList. size () ;}// Add the Click Event public boolean onTap (int I) {setFocus (geoList. get (I); Toast. makeText (this. mContext, geoList. get (I ). getSnippet (), Toast. LENGTH_LONG ). show (); // return true;} public boolean onTap (GeoPoint point, MapView mapView) {return super. onTap (point, mapView) ;}// locate your location public void myself () {LocationManager lm = (LocationManage R) getSystemService (LOCATION_SERVICE); Location l = lm. getLastKnownLocation (LocationManager. GPS_PROVIDER); if (l = null) {Toast. makeText (BmapActivity. this, "unable to get your location", Toast. LENGTH_SHORT ). show ();/* default position */dLat = 34.824289; dLon = 113.689044; GeoPoint geoPoint = new GeoPoint (int) (dLat * 1e6), (int) (dLon * 1e6); mapController. setCenter (geoPoint);} else {dLat = (int) (l. getLatitude ()* 1E6); dLon = (int) (l. getlongpolling () * 1E6) ;}@ Override protected boolean isRouteDisplayed () {return false ;}@ Override protected void onDestroy () {if (mapManager! = Null) {// call this method mapManager before exiting the program. destroy (); mapManager = null;} super. onDestroy () ;}@ Override protected void onPause () {if (mapManager! = Null) {// terminate Baidu map API mapManager. getLocationManager (). removeUpdates (mLocationListener); mLocationOverlay. disableMyLocation (); mLocationOverlay. disableCompass (); // disable the compass mapManager. stop ();} super. onPause () ;}@ Override protected void onResume () {if (mapManager! = Null) {// enable the Baidu map API // register the positioning event, and then move the map to the positioning point mapManager. getLocationManager (). requestLocationUpdates (mLocationListener); mLocationOverlay. enableMyLocation (); mLocationOverlay. enableCompass (); // open the compass mapManager. start ();} super. onResume ();}/*** implements the MKSearchListener interface, used to Implement Asynchronous search service ** @ author liufeng */public class MySearchListener implements MKSearchListener {/*** search address information result based on latitude and longitude ** @ param result * search result * @ param iError * error number (0 indicates a correct return) */public void onGetAddrResult (MKAddrInfo result, int iError) {}/*** driving route search result ** @ param result * search result * @ param iError * error code */public void onGetDrivingRouteResult (MKDrivingRouteResult result, int iError) {}/***** POI search results (range search, city POI search, and peripheral search) * @ param result search result ** @ param type * return result type, 21: poi list 7: City list) * @ param iError * error code (0 indicates correct return) */public void onGetPoiResult (MKPoiResult result, int type, int iError) {if (result = null) {return;} // PoiOverlay is the Overlay PoiOverlay (BmapActivity) provided by the baidu map api for displaying POI. this, mapView); // you can specify POI data poioverlay. setData (result. getAllPoi (); // display PoiOverlay on the map (mark the searched point of interest on the map) mapView. getOverlays (). add (poioverlay);}/*** bus transfer Route Search result ** @ param result search result *** @ param iError * error code (0 indicates a correct response) **/public void onGetTransitRouteResult (MKTransitRouteResult result, int iError) {}/***** walking Route Search result *** @ param result * search result ** @ param iError * error code (0 indicates a correct response) **/public void onGetWalkingRouteResult (MKWalkingRouteResult result, int iError ){}}}