I write an application that help people find appropriate places and show the direction to the target. Before, this functionality work well but now the draw route function does not work. The exception I got is that application can not download and then parse the kml corresponding to the route (the code: xmlreader.parse(is);), although the URL generated to get KML is correct (I test it in Browser) - for example: https://maps.google.com/maps?f=d&hl=en&saddr=21.04664,105.852203&daddr=21.040527,105.849783&ie=UTF8&om=0&output=kml
I ask my self whether the direction API of Google for MapView does not work properly or I missed some thing.
Here is my code to get the route and then generate URL - get KML and then draw the route.
public void drawPath(GeoPoint from,GeoPoint to, int color, MapView mMapView01) {
NavigationDataSet navSet= new NavigationDataSet();
StringBuilder urlString = new StringBuilder();
urlString.append("http://maps.google.com/maps?f=d&hl=en");
urlString.append("&saddr=");//from
urlString.append( Double.toString((double)from.getLatitudeE6()/1.0E6 ));
urlString.append(",");
urlString.append( Double.toString((double)from.getLongitudeE6()/1.0E6 ));
urlString.append("&daddr=");//to
urlString.append( Double.toString((double)to.getLatitudeE6()/1.0E6 ));
urlString.append(",");
urlString.append( Double.toString((double)to.getLongitudeE6()/1.0E6 ));
urlString.append("&ie=UTF8&0&om=0&output=kml");
Log.v("TEST", urlString.toString());
try{
// setup the url
URL url = new URL(urlString.toString());
// get our data via the url class
InputSource is = new InputSource(url.openConnection().getInputStream());
// DocumentBuilderFactory dbfAdd = DocumentBuilderFactory.newInstance();
// DocumentBuilder dbAdd = dbfAdd.newDocumentBuilder();
// dbAdd.parse(url.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);
// perform the synchronous parse
xmlreader.parse(is);
// get the results - should be a fully populated RSSFeed instance, or null on error
navSet= navSaxHandler.getParsedData();
Log.v("MAP", "input source: " + (is == null));
} catch(Exception e) {
// Log.d("DirectionMap","Exception parsing kml.");
Log.v("DRAW", "Die here");
e.printStackTrace();
}
try {
String distance = navSet.getRoutePlacemark().getDistance();
placeLabelTextView.setText(placeLabel + distance);
} catch (Exception e) {
// TODO: handle exception
}
//hien thi duong di
Log.v("MAP",(navSet.getCurrentPlacemark() != null) + "-des: ");
String path = navSet.getRoutePlacemark().getCoordinates();
String[] pairs = path.trim().split(" ");
String[] lngLat = pairs[0].split(","); // lngLat[0]=longitude lngLat[1]=latitude lngLat[2]=height
try {
GeoPoint startGP = new GeoPoint((int) (Double.parseDouble(lngLat[1]) * 1E6), (int) (Double.parseDouble(lngLat[0]) * 1E6));
mMapView01.getOverlays().add(new MyOverLay(startGP, startGP, 1));
GeoPoint gp1;
GeoPoint gp2 = startGP;
int w = (int) (5 * ShowPlaceOnMapsActivity.this.getResources().getDisplayMetrics().density);
for (int i = 1; i < pairs.length; i++) // the last one would be crash
{
lngLat = pairs[i].split(",");
gp1 = gp2;
gp2 = new GeoPoint((int) (Double.parseDouble(lngLat[1]) * 1E6), (int) (Double.parseDouble(lngLat[0]) * 1E6));
mMapView01.getOverlays().add(new MyOverLay(gp1, gp2, 2, color,w));
}
mMapView01.getOverlays().add(new MyOverLay(gp2, gp2, 3));
//hien thi cac chi dan
List<Overlay> mapOverlays;
mapOverlays=mMapView01.getOverlays();
String s=new String();
String description=new String();
String name=new String();
Placemark p=new Placemark();
Drawable drawable1=mMapView01.getResources().getDrawable(R.drawable.way_turn_mark);
MyItemizedOverlay itemizedOverlay1 = new MyItemizedOverlay(drawable1, mMapView01);
for (Iterator<Placemark> iter=navSet.getPlacemarks().iterator();iter.hasNext();) {
p = (Placemark)iter.next();
if(!p.getTitle().equals("Route")){
s=p.getCoordinates();
description=p.getDescription();
// Log.v("TEST", "URL: " + p.getAddress());
name=p.getTitle();
lngLat =s.split(",");
gp2= new GeoPoint((int) (Double.parseDouble(lngLat[1])* 1E6), (int) (Double.parseDouble(lngLat[0]) * 1E6));
if(description != null)
itemizedOverlay1.addOverlay(new OverlayItem(gp2,name+"\n"+description,""));
else
itemizedOverlay1.addOverlay(new OverlayItem(gp2, name, ""));
}
}
mapOverlays.add(itemizedOverlay1);
mapController.animateTo(new GeoPoint( (startGP.getLatitudeE6() + gp2.getLatitudeE6())/2, (startGP.getLongitudeE6() + gp2.getLongitudeE6())/2 ));
} catch (NumberFormatException e) {
}
}
The exception I got for the code is at:
xmlreader.parse(is);
org.apache.harmony.xml.ExpatParser$ParseException:....... not well-formed
Have you met this problem? Any help and comment is highly appreciated.
Here is exception stack trace
07-30 22:06:03.510: VERBOSE/TEST(234): http://maps.google.com/maps?f=d&hl=en&saddr=21.059457,105.843963&daddr=21.052597,105.840636&ie=UTF8&0&om=0&output=kml
07-30 22:06:04.190: VERBOSE/DRAW(234): Die here
07-30 22:06:04.190: WARN/System.err(234): org.apache.harmony.xml.ExpatParser$ParseException: At line 1, column 805: not well-formed (invalid token)
07-30 22:06:04.210: WARN/System.err(234): at org.apache.harmony.xml.ExpatParser.parseFragment(ExpatParser.java:508)
07-30 22:06:04.210: WARN/System.err(234): at org.apache.harmony.xml.ExpatParser.parseDocument(ExpatParser.java:467)
07-30 22:06:04.210: WARN/System.err(234): at org.apache.harmony.xml.ExpatReader.parse(ExpatReader.java:329)
07-30 22:06:04.210: WARN/System.err(234): at org.apache.harmony.xml.ExpatReader.parse(ExpatReader.java:302)
07-30 22:06:04.210: WARN/System.err(234): at hust.se.vtio.icompanion.ShowPlaceOnMapsActivity.drawPath(ShowPlaceOnMapsActivity.java:301)
07-30 22:06:04.210: WARN/System.err(234): at hust.se.vtio.icompanion.ShowPlaceOnMapsActivity.onOptionsItemSelected(ShowPlaceOnMapsActivity.java:245)
07-30 22:06:04.210: WARN/System.err(234): at android.app.Activity.onMenuItemSelected(Activity.java:2170)
07-30 22:06:04.210: WARN/System.err(234): at com.android.internal.policy.impl.PhoneWindow.onMenuItemSelected(PhoneWindow.java:730)
07-30 22:06:04.210: WARN/System.err(234): at com.android.internal.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:139)
07-30 22:06:04.210: WARN/System.err(234): at com.android.internal.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:855)
07-30 22:06:04.210: WARN/System.err(234): at com.android.internal.view.menu.IconMenuView.invokeItem(IconMenuView.java:525)
07-30 22:06:04.220: WARN/System.err(234): at com.android.internal.view.menu.IconMenuItemView.performClick(IconMenuItemView.java:122)
07-30 22:06:04.220: WARN/System.err(234): at android.view.View.onTouchEvent(View.java:4179)
07-30 22:06:04.220: WARN/System.err(234): at android.widget.TextView.onTouchEvent(TextView.java:6540)
07-30 22:06:04.220: WARN/System.err(234): at android.view.View.dispatchTouchEvent(View.java:3709)
07-30 22:06:04.220: WARN/System.err(234): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884)
07-30 22:06:04.220: WARN/System.err(234): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:884)
07-30 22:06:04.220: WARN/System.err(234): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1643)
07-30 22:06:04.220: WARN/System.err(234): at android.view.ViewRoot.handleMessage(ViewRoot.java:1691)
07-30 22:06:04.220: WARN/System.err(234): at android.os.Handler.dispatchMessage(Handler.java:99)
07-30 22:06:04.220: WARN/System.err(234): at android.os.Looper.loop(Looper.java:123)
07-30 22:06:04.220: WARN/System.err(234): at android.app.ActivityThread.main(ActivityThread.java:4363)
07-30 22:06:04.220: WARN/System.err(234): at java.lang.reflect.Method.invokeNative(Native Method)
07-30 22:06:04.220: WARN/System.err(234): at java.lang.reflect.Method.invoke(Method.java:521)
07-30 22:06:04.220: WARN/System.err(234): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
07-30 22:06:04.220: WARN/System.err(234): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
07-30 22:06:04.220: WARN/System.err(234): at dalvik.system.NativeStart.main(Native Method)
And here is the content of KML I got when open URL in Browser
Here is the content of KML file I got from Browser:
<kml xmlns="http://earth.google.com/kml/2.2">
<Document>
<name>Driving directions to 21.052597,105.840636</name>
<description><![CDATA[]]></description>
<Style id="style3">
<IconStyle>
<Icon>
<href></href>
</Icon>
</IconStyle>
</Style>
<Style id="style2">
<LineStyle>
<color>73FF0000</color>
<width>5</width>
</LineStyle>
</Style>
<Style id="style1">
<IconStyle>
<Icon>
<href></href>
</Icon>
</IconStyle>
</Style>
<Placemark>
<name>From: 21.059457,105.843963</name>
<styleUrl>#style3</styleUrl>
<Point>
<coordinates>105.842567,21.058840,0.000000</coordinates>
</Point>
</Placemark>
<Placemark>
<name>Driving directions to 21.052597,105.840636</name>
<styleUrl>#style2</styleUrl>
<ExtendedData>
<Data name="_SnapToRoads">
<value>true</value>
</Data>
</ExtendedData>
<LineString>
<tessellate>1</tessellate>
<coordinates>
105.842567,21.058840,0.000000
105.842346,21.059200,0.000000
105.841080,21.060551,0.000000
105.840530,21.061300,0.000000
105.840393,21.061399,0.000000
105.839653,21.061701,0.000000
105.839653,21.061701,0.000000
105.838860,21.061159,0.000000
105.838860,21.061159,0.000000
105.838852,21.061050,0.000000
105.838409,21.060699,0.000000
105.838409,21.060699,0.000000
105.838692,21.059879,0.000000
105.840950,21.055691,0.000000
105.840950,21.055691,0.000000
105.840477,21.055571,0.000000
105.839493,21.054930,0.000000
105.839493,21.054930,0.000000
105.839981,21.054060,0.000000
105.840553,21.052561,0.000000
</coordinates>
</LineString>
</Placemark>
<Placemark>
<name>To: 21.052597,105.840636</name>
<styleUrl>#style1</styleUrl>
<Point>
<coordinates>105.840546,21.052563,0.000000</coordinates>
</Point>
</Placemark>
</Document>
</kml>