仅在Google地图上显示行程(Xml格式?,2012)

时间:2012-11-23 15:28:12

标签: java android google-maps

因此,自2012年7月21日起,我可以听到不再可能使用KLM在2 GeoPoint之间绘制路径,我跟着这个:

Why retrieving Google Directions for Android using KML data is not working anymore?

但我得到一个错误,这里是我的Activity中的onCreate()方法:

  Route route = directions(new GeoPoint((int)(26.2*1E6),(int)(50.6*1E6)), new     GeoPoint((int)(26.3*1E6),(int)(50.7*1E6)));
 RouteOverlay routeOverlay = new RouteOverlay(route, Color.BLUE);
 mapView.getOverlays().add(routeOverlay);
 mapView.invalidate();

在活动中调用的方法:

 private Route directions(final GeoPoint start, final GeoPoint dest) {

//Changed from Parser to GoogleParser beacause i had Error
 GoogleParser parser;
//https://developers.google.com/maps/documentation/directions/#JSON <- get api
String jsonURL = "http://maps.googleapis.com/maps/api/directions/json?";
final StringBuffer sBuf = new StringBuffer(jsonURL);
sBuf.append("origin=");
sBuf.append(start.getLatitudeE6()/1E6);
sBuf.append(',');
sBuf.append(start.getLongitudeE6()/1E6);
sBuf.append("&destination=");
sBuf.append(dest.getLatitudeE6()/1E6);
sBuf.append(',');
sBuf.append(dest.getLongitudeE6()/1E6);
sBuf.append("&sensor=true&mode=driving");
parser = new GoogleParser(sBuf.toString());
Route r =  parser.parse();
return r;
 }

LogCat输出:

 11-23 16:07:50.126: E/AndroidRuntime(24124): FATAL EXCEPTION: main
 11-23 16:07:50.126: E/AndroidRuntime(24124): java.util.NoSuchElementException
 11-23 16:07:50.126: E/AndroidRuntime(24124):   at      java.util.ArrayList$ArrayListIterator.next(ArrayList.java:572)
   11-23 16:07:50.126: E/AndroidRuntime(24124):     at         com.xxx.xxx.xxx.RouteOverlay.redrawPath(RouteOverlay.java:90)
  11-23 16:07:50.126: E/AndroidRuntime(24124):  at    com.xxx.xxx.xxx.RouteOverlay.draw(RouteOverlay.java:60)
 11-23 16:07:50.126: E/AndroidRuntime(24124):   at   com.google.android.maps.Overlay.draw(Overlay.java:179)
 11-23 16:07:50.126: E/AndroidRuntime(24124):   at 

等...

行错误(RouteOverlay.java):

             prj.toPixels(it.next(), p);

开:

 private void redrawPath(final MapView mv) {
        final Projection prj = mv.getProjection();
        path.rewind();
        final Iterator<GeoPoint> it = routePoints.iterator();
        //Crash Here 
        prj.toPixels(it.next(), p);
        path.moveTo(p.x, p.y);
        while (it.hasNext()) {
                prj.toPixels(it.next(), p);
                path.lineTo(p.x, p.y);
        }
        path.setLastPoint(p.x, p.y);
}

谢谢。

1 个答案:

答案 0 :(得分:1)

似乎有些事情发生了变化,你现在没有获得任何积分?要修复崩溃,请使方法更加健壮:

  if (it.hasNext()) {
    prj.toPixels(it.next(), p);
    path.moveTo(p.x, p.y);
    while (it.hasNext()) {
            prj.toPixels(it.next(), p);
            path.lineTo(p.x, p.y);
    }
    path.setLastPoint(p.x, p.y);
  }

现在不知道为什么数组是空的。