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アプリで、マップをある場所から別の場所に移動する必要がある状況があります....私はAndroidにまったく慣れていません..そして、2つの場所の間に線を引く方法を見つけました..

public class Mapview extends MapActivity implements LocationListener{
MapController mc;
GeoPoint p,p1,p2;
LocationManager lm;
String provider;
 class Mapoverlay extends com.google.android.maps.Overlay
 {

    @Override
    public boolean draw(Canvas canvas, MapView mapView, boolean shadow,
            long when) {
        // TODO Auto-generated method stub
        super.draw(canvas, mapView, shadow);
        Point screenpoints=new Point();     
        Point screenpoints1=new Point();
        Point screenpoints2=new Point();
         Paint paint;
         paint = new Paint();
         paint.setColor(Color.RED);
         paint.setAntiAlias(true);
         paint.setStyle(Style.FILL);
         paint.setStrokeWidth(2);
         paint.setAlpha(120);
         Paint paint1;
         paint1 = new Paint();
         paint1.setColor(Color.BLUE);
         paint1.setAntiAlias(true);
         paint1.setStyle(Style.FILL);
         paint1.setStrokeWidth(2);
         paint1.setAlpha(120);
        if(p != null)
        {
            mapView.getProjection().toPixels(p, screenpoints);
            mapView.getProjection().toPixels(p1, screenpoints1);
            mapView.getProjection().toPixels(p2, screenpoints2);
//              Bitmap map=BitmapFactory.decodeResource(getResources(),      R.drawable.pushpin1);
//               canvas.drawBitmap(map, screenpoints.x, screenpoints.y-53, null);
             canvas.drawLine(screenpoints.x,screenpoints.y,screenpoints1.x,screenpoints1.y, paint);
             canvas.drawLine(screenpoints.x,screenpoints.y,screenpoints2.x,screenpoints2.y, paint);
        }

        return true;

    }

 }

@Override
protected void onCreate(Bundle icicle) {
    // TODO Auto-generated method stub
    super.onCreate(icicle);
    setContentView(R.layout.mapview);
    MapView map=(MapView)findViewById(R.id.mapView);
    map.setBuiltInZoomControls(true);
     mc=map.getController();
     String[] coordinates={"51.4750766129036", "-3.15672342166522"};
     double lat = Double.parseDouble(coordinates[0]);
     double lng = Double.parseDouble(coordinates[1]);

     p=new GeoPoint((int)(lat*1E6), (int)(lng*1E6));
     String[] coordinates1={"17.453117" , "78.467586" };
     double lat1 = Double.parseDouble(coordinates1[0]);
     double lng1 = Double.parseDouble(coordinates1[1]);

     p2=new GeoPoint((int)(lat1*1E6), (int)(lng1*1E6));
      p1 = new GeoPoint(19240000,-99120000);

//        p = new GeoPoint(19241000,-99121000);
     lm=(LocationManager)getSystemService(Context.LOCATION_SERVICE);

     Criteria criteria = new Criteria();
     criteria.setAccuracy(Criteria.ACCURACY_FINE);
     criteria.setAltitudeRequired(false);
     criteria.setBearingRequired(false);
     criteria.setCostAllowed(true);
     criteria.setPowerRequirement(Criteria.POWER_LOW);
     provider=lm.getBestProvider(criteria, true);


     Location loc=lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
     List<String>  lists=lm.getAllProviders();
//       float f=loc.distanceTo(loc);
     if (loc!=null){
         System.out.println("Provider " + provider + " has been selected.");
        onLocationChanged(loc); 
     }else{
         Toast.makeText(getApplicationContext(), "Provider " + provider+ loc +  lists+" has not been selected.", 5000).show();
//           this.finish();
     }

//       Toast.makeText(getApplicationContext(), p.getLatitudeE6()+p.getLongitudeE6(), Toast.LENGTH_SHORT).show();
     mc.animateTo(p);
     mc.setZoom(1);
     map.invalidate();
     Mapoverlay mapOverlay = new Mapoverlay();
        List<Overlay> listOfOverlays = map.getOverlays();
        listOfOverlays.clear();
        listOfOverlays.add(mapOverlay);        

}

ユーザーの操作なしでマップをある場所から別の場所に移動することに行き詰まっています

例：アプリがニューヨーク市の場所を開始すると、マップがテキサスに移動する必要があります...どんな助けも感謝します

4

2 に答える 2

1

このクラスを試してみてくださいActivity act,GeoPoint src,GeoPoint dest, int color, MapView mMapView を渡すだけです

To call this class do this

    new getRoute().DrawPath(this,mGeoPoint,getGeoPoint,Color.RED,mMapView);  





  public class getRoute 
    {
        /*Variable*/
        double mIntentLatitude, mIntentLongitude;
        double mCursorLatitude, mCursorLongitude, mStartLatitude, mStartLongitude, mEndLatitude, MEndLongitude;
        String mJsonData;
        String mEnd_Address, mStart_Address, mName;
        int mLength;
        GeoPoint mGeoPoint = new GeoPoint(220328269, 725588202);
        double mLatitude_End[], mLongitude_End[], mLatitude_Start[], mLongitude_Start[];
        Activity activity;


        public getRoute
        (){

        }   
        boolean error = false;
        public void DrawPath(Activity act,GeoPoint src,GeoPoint dest, int color, MapView mMapView01)
        {
            // connect to map web service
            DrawPathBack draw = new DrawPathBack(act, src, dest, color, mMapView01);
            draw.execute("Draw");
        }
        public class DrawPathBack extends AsyncTask<String, Integer,Void>
        {
            ProgressDialog bar;
            List<Overlay> mListOverlay;
            MapOverlay mapOverlay;
            ItemizedOverlay<OverlayItem> mItemizedOverlay;

            GeoPoint src,dest;
            int color;
            MapView mMapView;
            CommonMethod mCommonMethod;
            String [] pairs;
            String[] lngLat;



            public DrawPathBack(Activity act,GeoPoint gpsrc,GeoPoint gpdest, int c, MapView mMap)
            {
                activity =act;
                src=gpsrc;
                dest=gpdest;
                color = c;
                mMapView=mMap;
                mListOverlay = mMapView.getOverlays();
                mapOverlay = new MapOverlay(mGeoPoint);
                mListOverlay.add(mapOverlay);
                mMapView.invalidate();

            }
            @Override
            protected Void doInBackground(String... params)
            {



                HttpParams httpParameters = new BasicHttpParams();

                HttpConnectionParams.setSoTimeout(httpParameters, 60000);

                HttpClient client = new DefaultHttpClient();

                try {

                    HttpPost httpPost = new HttpPost("http://maps.googleapis.com/maps/api/directions/json?origin="+ (Double.toString((double)src.getLatitudeE6()/1.0E6)) + "," +(Double.toString((double)src.getLongitudeE6()/1.0E6 ) + "&destination=" + (Double.toString((double)dest.getLatitudeE6()/1.0E6)) + ","+  (Double.toString((double)dest.getLongitudeE6()/1.0E6))+ "&sensor=false"));
                    mIntentLatitude=((double)src.getLatitudeE6()/1.0E6);
                    mIntentLongitude=((double)src.getLongitudeE6()/1.0E6);

                    //httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
                    HttpResponse httpResponse = client.execute(httpPost);
                    mJsonData = EntityUtils.toString(httpResponse.getEntity());

                } catch (ClientProtocolException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
                return null;
            }
            @Override
            protected void onProgressUpdate(Integer... progress)
            {
                bar.setMessage("Time Progress "+progress[0]);
            }
            @Override
            protected void onPostExecute(Void result) 
            {
                try {

                    JSONObject jsonObj = new JSONObject(mJsonData);

                    // grabbing the routes object
                    JSONArray routes = jsonObj.getJSONArray("routes");

                    for (int i = 0; i < routes.length(); i++) {

                        JSONObject rout = routes.getJSONObject(i);

                        JSONObject bounds = rout.getJSONObject("bounds");

                        JSONObject northest = bounds.getJSONObject("northeast");

                        mStartLatitude = northest.getDouble("lat");
                        mStartLongitude = northest.getDouble("lng");

                        JSONObject southwest = bounds.getJSONObject("southwest");
                        mEndLatitude = southwest.getDouble("lat");
                        MEndLongitude = southwest.getDouble("lng");
                        System.out.println("get data from jeson" + mCursorLatitude + mCursorLongitude + mEndLatitude
                                + MEndLongitude);

                        // grabbing the routes legs
                        JSONArray legs = rout.getJSONArray("legs");
                        System.out.println("length of legs array     " + legs.length());
                        for (int j = 0; j < legs.length(); j++) {
                            JSONObject leg = legs.getJSONObject(j);
                            System.out.println("enter in second array");

                            JSONObject distance = leg.getJSONObject("distance");
                            String mTextDistent = distance.getString("text");
                            System.out.println("distances bitween two point" + mTextDistent);
                            JSONObject duration = leg.getJSONObject("duration");
                            String mTextDurestion = duration.getString("text");

                            mEnd_Address = leg.getString("end_address");

                            mStart_Address = leg.getString("start_address");
                            System.out.println("get data from jeson in second arry"
                                    + mTextDurestion + " " + mEnd_Address + "  " + mStart_Address);

                            JSONArray step = leg.getJSONArray("steps");

                            mLength = step.length();

                            mLatitude_End = new double[mLength];
                            mLongitude_End = new double[mLength];
                            mLatitude_Start = new double[mLength];
                            mLongitude_Start = new double[mLength];

                            for (int k = 0; k < step.length(); k++) {

                                JSONObject st = step.getJSONObject(k);

                                System.out.println("enter in third array");
                                JSONObject end_lo = st.getJSONObject("end_location");

                                JSONObject start_lo = st
                                .getJSONObject("start_location");

                                mLatitude_End[k] = end_lo.getDouble("lat");
                                mLongitude_End[k] = end_lo.getDouble("lng");

                                mLatitude_Start[k] = start_lo.getDouble("lat");
                                mLongitude_Start[k] = start_lo.getDouble("lng");

                            }
                            for (int mDistanse = 0; mDistanse < mLength; mDistanse++) {
                                System.out.println("end location let" + mLatitude_End[mDistanse]);
                                System.out.println("end location long+"
                                        + mLongitude_End[mDistanse]);
                                System.out.println("Start location let"
                                        + mLatitude_Start[mDistanse]);
                                System.out.println("Start location long"
                                        + mLongitude_Start[mDistanse]);
                            }
                        }
                    }

                } catch (Exception e) {
                    // TODO: handle exception
                    e.printStackTrace();
                }
            }
        }

        public class MapOverlay extends com.google.android.maps.Overlay {

            public MapOverlay(GeoPoint mGeoPoint) {

            }

            @Override
            public boolean draw(final Canvas canvas, MapView mapView,
                    boolean shadow, long when) {

                Point mpoint = new Point();
                Point mpoint1 = new Point();

                int let[] = new int[mLength];
                int lon[] = new int[mLength];
                int let_end[] = new int[mLength];
                int lon_end[] = new int[mLength];
                GeoPoint newGeoPoint = null;
                GeoPoint newGeoPoint1;
                for (int k = 0; k < mLength; k++) {

                    let[k] = (int) (mLatitude_Start[k] * 1E6);
                    lon[k] = (int) (mLongitude_Start[k] * 1E6);

                    let_end[k] = (int) (mLatitude_End[k] * 1E6);
                    lon_end[k] = (int) (mLongitude_End[k] * 1E6);
                    newGeoPoint1 = new GeoPoint(let_end[k], lon_end[k]);
                    newGeoPoint = new GeoPoint(let[k], lon[k]);
                    mapView.getProjection().toPixels(newGeoPoint, mpoint);
                    mapView.getProjection().toPixels(newGeoPoint1, mpoint1);
                    Paint paint = new Paint();

                    paint.setColor(Color.RED);
                    paint.setStyle(Paint.Style.FILL_AND_STROKE);
                    paint.setStrokeWidth(5);
                    canvas.drawCircle(mpoint.x, mpoint.y, 5, paint);
                    paint.setColor(Color.BLUE);
                    canvas.drawLine(mpoint.x, mpoint.y, mpoint1.x, mpoint1.y, paint);
                    paint.setColor(Color.BLACK);
                    paint.setStrokeWidth(100);
                    paint.setStyle(Paint.Style.FILL);
                    if(k==mLength-1){
                        Bitmap bmp = BitmapFactory.decodeResource(activity.getResources(), R.drawable.green_pin);
                        canvas.drawBitmap(bmp,mpoint1.x ,mpoint1.y-30, null);
                    }
                    GeoPoint dumy=new GeoPoint((int)(mIntentLatitude * 1E6), (int)(mIntentLongitude * 1E6));
                    Point dumy1 = new Point();
                    mapView.getProjection().toPixels(dumy, dumy1);
                    Bitmap bmp = BitmapFactory.decodeResource(activity.getResources(), R.drawable.dest_pin);
                    canvas.drawBitmap(bmp,dumy1.x,dumy1.y - 25, null);
                    mapView.getController().animateTo(dumy);
                    mapView.invalidate();
                }
                return false;

            }

        }
    }
于 2012-11-06T09:30:05.233 に答える
0

特定の位置に地図を移動したい場合は、これを試してから、その位置の緯度または経度を取得して、これを渡してください。

MapController mMapController;

mMapController=mMapView.getController();
    mMapController.setCenter(new GeoPoint((int)(lat * 1E6), (int)(lon * 1E6)));

2つの場所の間にパスを描画する場合は、次の場所にlatとlonを渡します。

Intent intent = new Intent(android.content.Intent.ACTION_VIEW, 
                Uri.parse("http://maps.google.com/maps?saddr="+ String.valueOf(from_lattitude) +","+ String.valueOf(from_longitude) +"&daddr="+ String.valueOf(dest_lati) +","+ String.valueOf(dest_longi)));
                startActivity(intent);
于 2012-11-06T07:21:28.310 に答える