閱讀KML文件並將其顯示到Google地圖中

Question

我在做一個地圖應用程序[閱讀KML文件並將其顯示到Google地圖中]，並且我正在使用本網站中討論過的類。這堂課如下圖所示。

我面臨一些問題 1-的R.layout.main >>有在主
2-也錯誤，則DEST [1]和dest [0]它們不識別
3-也drowpath功能沒有被識別

我得到這個類從這個鏈接How to draw a path on a map using kml file?

package com.test.map; 

import com.test.map.R ; 
import java.net.URL; 

import javax.xml.parsers.SAXParser; 
import javax.xml.parsers.SAXParserFactory; 

import org.xml.sax.InputSource; 
import org.xml.sax.XMLReader; 

import android.R; 
import android.content.Context; 
import android.graphics.Color; 
import android.graphics.drawable.Drawable; 
import android.location.Location; 
import android.location.LocationManager; 
import android.os.Bundle; 
import android.util.Log; 


import com.google.android.maps.GeoPoint; 
import com.google.android.maps.MapActivity; 
import com.google.android.maps.MapController; 
import com.google.android.maps.MapView; 
import com.google.android.maps.OverlayItem; 

public class DirectionMapActivity extends MapActivity { 

@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main); 

    MapView mapView = (MapView) findViewById(R.id.mapview); 
    mapView.setBuiltInZoomControls(true); 

    // Acquire a reference to the system Location Manager 
    LocationManager locationManager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE); 

    String locationProvider = LocationManager.NETWORK_PROVIDER; 
    Location lastKnownLocation = locationManager.getLastKnownLocation(locationProvider); 

    StringBuilder urlString = new StringBuilder(); 
    urlString.append("http://maps.google.com/maps?f=d&hl=en"); 
    urlString.append("&saddr=");//from 
    urlString.append(Double.toString(lastKnownLocation.getLatitude())); 
    urlString.append(","); 
    urlString.append(Double.toString(lastKnownLocation.getLongitude())); 
    urlString.append("&daddr=");//to 
    urlString.append(Double.toString((double)dest[0]/1.0E6)); 
    urlString.append(","); 
    urlString.append(Double.toString((double)dest[1]/1.0E6)); 
    urlString.append("&ie=UTF8&0&om=0&output=kml"); 

    try{ 
     // setup the url 
     URL url = new URL(urlString.toString()); 
     // create the factory 
     SAXParserFactory factory = SAXParserFactory.newInstance(); 
     // create a parser 
     SAXParser parser = factory.newSAXParser(); 
     // create the reader (scanner) 
     XMLReader xmlreader = parser.getXMLReader(); 
     // instantiate our handler 
     NavigationSaxHandler navSaxHandler = new NavigationSaxHandler(); 
     // assign our handler 
     xmlreader.setContentHandler(navSaxHandler); 
     // get our data via the url class 
     InputSource is = new InputSource(url.openStream()); 
     // perform the synchronous parse   
     xmlreader.parse(is); 
     // get the results - should be a fully populated RSSFeed instance, or null on error 
     NavigationDataSet ds = navSaxHandler.getParsedData(); 

     // draw path 
     drawPath(ds, Color.parseColor("#add331"), mapView); 

     // find boundary by using itemized overlay 
     GeoPoint destPoint = new GeoPoint(dest[0],dest[1]); 
     GeoPoint currentPoint = new GeoPoint(new Double(lastKnownLocation.getLatitude()*1E6).intValue() 
              ,new Double(lastKnownLocation.getLongitude()*1E6).intValue()); 

     Drawable dot = this.getResources().getDrawable(R.drawable.pixel); 
     MapItemizedOverlay bgItemizedOverlay = new MapItemizedOverlay(dot,this); 
     OverlayItem currentPixel = new OverlayItem(destPoint, null, null); 
     OverlayItem destPixel = new OverlayItem(currentPoint, null, null); 
     bgItemizedOverlay.addOverlay(currentPixel); 
     bgItemizedOverlay.addOverlay(destPixel); 

     // center and zoom in the map 
     MapController mc = mapView.getController(); 
     mc.zoomToSpan(bgItemizedOverlay.getLatSpanE6()*2,bgItemizedOverlay.getLonSpanE6()*2); 
     mc.animateTo(new GeoPoint(
       (currentPoint.getLatitudeE6() + destPoint.getLatitudeE6())/2 
       , (currentPoint.getLongitudeE6() + destPoint.getLongitudeE6())/2)); 

    } catch(Exception e) { 
     Log.d("DirectionMap","Exception parsing kml."); 
    } 

} 

@Override 
protected boolean isRouteDisplayed() { 
    // TODO Auto-generated method stub 
    return false; 

} 
} 
// and the rest of the methods in activity, e.g. drawPath() etc... 

Answer 1

這裏有一些回答你的問題：

。您可以根據自己的需要調整新的佈局文件。東西很喜歡這個

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:id="@+id/layout_fragement_mapview" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:background="@color/royal_blue" 
    android:orientation="vertical" > 

    <com.google.android.maps.MapView 
     android:id="@+id/mapview" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:apiKey="@string/maps_api_key" 
     android:clickable="true" 
     android:enabled="true" /> 

</RelativeLayout> 

。在dest[]，有2個常量，如：

int[] dest = new int[] { 42500000, 1950000 };

只需複製並在您DirectionMapActivty

其粘貼爲類變量。這裏是drawPath()。您可以在DirectionMapActivity或類似靜態方法在另一類使用它作爲一個方法：

public abstract class Drawing { 

    private static final String TAG = "Drawing"; 

    public static void drawPath(NavigationDataSet navSet, int color, MapView mMapView01) { 

     Log.d(TAG, "map color before: " + color); 

     // color correction for dining, make it darker 
     if (color == Color.parseColor("#add331")) 
     color = Color.parseColor("#6C8715"); 
     Log.d(TAG, "map color after: " + color); 

     Collection overlaysToAddAgain = new ArrayList<Object>(); 
     for (Iterator<Overlay> iter = mMapView01.getOverlays().iterator(); iter.hasNext();) { 
     Object o = iter.next(); 
     Log.d(TAG, "overlay type: " + o.getClass().getName()); 
     if (!RouteOverlay.class.getName().equals(o.getClass().getName())) { 
      // mMapView01.getOverlays().remove(o); 
      overlaysToAddAgain.add(o); 
     } 
     } 
     mMapView01.getOverlays().clear(); 
     mMapView01.getOverlays().addAll(overlaysToAddAgain); 

     String path = navSet.getRoutePlacemark().getCoordinates(); 
     Log.d(TAG, "path=" + path); 
     if (path != null && path.trim().length() > 0) { 
     String[] pairs = path.trim().split(" "); 

     Log.d(TAG, "pairs.length=" + pairs.length); 

     String[] lngLat = pairs[0].split(","); // lngLat[0]=longitude lngLat[1]=latitude 
               // lngLat[2]=height 

     Log.d(TAG, "lnglat =" + lngLat + ", length: " + lngLat.length); 

     if (lngLat.length < 3) 
      lngLat = pairs[1].split(","); // if first pair is not transferred completely, take 
              // seconds pair //TODO 

     try { 
      GeoPoint startGP = new GeoPoint((int) (Double.parseDouble(lngLat[1]) * 1E6), 
        (int) (Double.parseDouble(lngLat[0]) * 1E6)); 
      mMapView01.getOverlays().add(new RouteOverlay(startGP, startGP, 1)); 
      GeoPoint gp1; 
      GeoPoint gp2 = startGP; 

      for (int i = 1; i < pairs.length; i++) // the last one would be crash 
      { 
       lngLat = pairs[i].split(","); 

       gp1 = gp2; 

       if (lngLat.length >= 2 && gp1.getLatitudeE6() > 0 && gp1.getLongitudeE6() > 0 
        && gp2.getLatitudeE6() > 0 && gp2.getLongitudeE6() > 0) { 

        // for GeoPoint, first:latitude, second:longitude 
        gp2 = new GeoPoint((int) (Double.parseDouble(lngLat[1]) * 1E6), 
         (int) (Double.parseDouble(lngLat[0]) * 1E6)); 

        if (gp2.getLatitudeE6() != 22200000) { 
        mMapView01.getOverlays().add(new RouteOverlay(gp1, gp2, 2, color)); 
        Log.d(TAG, "draw:" + gp1.getLatitudeE6() + "/" + gp1.getLongitudeE6() + " TO " 
          + gp2.getLatitudeE6() + "/" + gp2.getLongitudeE6()); 
        } 
       } 
       // Log.d(myapp.APP,"pair:" + pairs[i]); 
      } 
      // routeOverlays.add(new RouteOverlay(gp2,gp2, 3)); 
      mMapView01.getOverlays().add(new RouteOverlay(gp2, gp2, 3)); 
     } catch (NumberFormatException e) { 
      Log.e(TAG, "Cannot draw route.", e); 
     } 
     } 
     // mMapView01.getOverlays().addAll(routeOverlays); // use the default color 
     mMapView01.setEnabled(true); 
    } 

我希望這可以幫助。玩的開心。

Answer 2

與參考UseFull link

試試這個

Intent mapIntent = new Intent(Intent.ACTION_VIEW, uri); 
Uri uri1 = Uri.parse("geo:0,0?q=http://code.google.com/apis/kml/ 
documentation/KML_Samples.kml"); 
mapIntent.setData(uri1); 
startActivity(Intent.createChooser(mapIntent, "Sample Map ")); 

Answer 3

public class KmlDemoActivity extends FragmentActivity { 

    private GoogleMap mMap; 
    private KmlLayer kmlLayer; 
    private MarkerOptions markerOptions; 
    private ArrayList<LatLng> arrayPoints = null; 
    private int flag = 0;//which you draw Line=2 or Polygone=1 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_draw_route); 

     int status = GooglePlayServicesUtil.isGooglePlayServicesAvailable(getBaseContext()); 

     if (status != ConnectionResult.SUCCESS) { 
      int requestCode = 10; 
      Dialog dialog = GooglePlayServicesUtil.getErrorDialog(status, this, requestCode); 
      dialog.show(); 
     } else { 
      SupportMapFragment fm = (SupportMapFragment) getSupportFragmentManager() 
        .findFragmentById(R.id.map); 
      mMap = fm.getMap(); 

      if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) { 

       return; 
      } 
      mMap.setMyLocationEnabled(true); 


      // Getting LocationManager object from System Service LOCATION_SERVICE 
      LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE); 

      // Creating a criteria object to retrieve provider 
      Criteria criteria = new Criteria(); 

      // Getting the name of the best provider 
      String provider = locationManager.getBestProvider(criteria, true); 

      // Getting Current Location 
      Location location = locationManager.getLastKnownLocation(provider); 

      if (location != null) { 
       onLocationChanged(location); 
      } 
      retrieveFileFromResourceArea(); 


     } 
    } 

    private void retrieveFileFromResourceArea() { 
     flag = 1; 
     try { 
      KmlLayer kmlLayer = new KmlLayer(mMap, R.raw.campus, getApplicationContext()); 

      kmlLayer.addLayerToMap(); 
      moveCameraToKml(kmlLayer); 
     } catch (IOException e) { 
      e.printStackTrace(); 
     } catch (XmlPullParserException e) { 
      e.printStackTrace(); 
     } 


     retrieveFileFromResourceLine(); 
    } 

    private void retrieveFileFromResourceLine() { 
     flag = 2; 
     try { 

      KmlLayer kmlLayer = new KmlLayer(mMap, R.raw.data, getApplicationContext()); 
      kmlLayer.addLayerToMap(); 
      moveCameraToKml(kmlLayer); 
     } catch (IOException e) { 
      e.printStackTrace(); 
     } catch (XmlPullParserException e) { 
      e.printStackTrace(); 
     } 

    } 


    public void onLocationChanged(Location location) { 

     // Getting latitude of the current location 
     double latitude = location.getLatitude(); 

     // Getting longitude of the current location 
     double longitude = location.getLongitude(); 

     // Creating a LatLng object for the current location 
     LatLng latLng = new LatLng(latitude, longitude); 


    } 


    private void moveCameraToKml(KmlLayer kmlLayer) { 

     KmlContainer container = kmlLayer.getContainers().iterator().next(); 

     container = container.getContainers().iterator().next(); 

     KmlPlacemark placemark = container.getPlacemarks().iterator().next(); 
     final LatLngBounds.Builder builder = new LatLngBounds.Builder(); 
     if (flag == 1) { 
      KmlPolygon polygon = (KmlPolygon) placemark.getGeometry(); 

      for (LatLng latLng : polygon.getOuterBoundaryCoordinates()) { 
       builder.include(latLng); 
      } 

     } 
     if (flag == 2) { 
      KmlLineString lineString = (KmlLineString) placemark.getGeometry(); 

      for (LatLng latLng : lineString.getGeometryObject()) { 
       builder.include(latLng); 
      } 
     } 


     mMap.setOnMapLoadedCallback(new GoogleMap.OnMapLoadedCallback() { 
      @Override 
      public void onMapLoaded() { 
       mMap.moveCamera(CameraUpdateFactory.newLatLngBounds(builder.build(), 1)); 

      } 
     }); 
    } 
} 

Answer 4

try { 
     String file = Environment.getExternalStorageDirectory().getPath() + "/campus.kml"; 
     String[] kmlfile = file.split("/"); 
     String kml=kmlfile[4]; 

      File myFile = new File(Environment.getExternalStorageDirectory().toString() + "/DCIM/Camera/campus"); 

      FileInputStream fIn = new FileInputStream(myFile); 

     KmlLayer kmlLayer = new KmlLayer(mMap, fIn, getApplicationContext()); 

     KmlLayer kmlLayer = new KmlLayer(mMap, R.raw.campus, getApplicationContext()); 

     kmlLayer.addLayerToMap(); 
     moveCameraToKml(kmlLayer); 
    } catch (IOException e) { 
     e.printStackTrace(); 
    } catch (XmlPullParserException e) { 
     e.printStackTrace(); 
    } 



}