如何使复选框在地图上显示多段线？ [英] How to make polylines show on map with checkbox?

问题描述

解决方案

定义对象折线

折线polyLine;

使用下面给出的这个类来简化线，只是将您的FROM传递给TO lat ，lng

  private class MapDirectionAsync extends AsyncTask< Void，Void，PolylineOptions> {
私人LatLng 
 sourceLatLng，
 destinationLatLng; 
 
私有MapDirectionAsync（LatLng sourceLatLng，LatLng destinationLatLng）{
 this.sourceLatLng = sourceLatLng; 
 this.destinationLatLng = destinationLatLng; 
 
 $ b @Override 
 protected PolylineOptions doInBackground（Void ... params）{
 GMapV2Direction md = new GMapV2Direction（）; 
 Document doc = md.getDocument（sourceLatLng，destinationLatLng，GMapV2Direction.MODE_DRIVING）; 
 if（doc！= null）{
 ArrayList< LatLng> directionPoint = md.getDirection（doc）; 
 PolylineOptions rectLine = new PolylineOptions（）。width（16）.color（ContextCompat.getColor（TripsActivity.this，R.color.colorPrimary））; 
 
 float km = Float.parseFloat（md.getDistanceText（doc））/ 1000; 
 String km1 = String.format（Locale.US，％.1f，km）; 
 Log.e（GoogleMapRoute，Total KM：+ km1）; 
 
 int duration = md.getDurationValue（doc）; 
 Log.e（GoogleMapRoute，===============总持续时间：+持续时间/ 60）; 
 
 for（int i = 0; i< directionPoint.size（）; i ++）{
 rectLine.add（directionPoint.get（i））; 
} 
 return rectLine; 
} 
 
返回null; 
} 
 
 @Override 
 protected void onPostExecute（PolylineOptions rectLine）{
 super.onPostExecute（rectLine）; 
 
 if（rectLine！= null）{
 polyLine = google_Map.addPolyline（rectLine）; 
} else {
 //无多行文本
} 
} 
} 
  

`

I was wondering how can I make polylines to show on my map when I click on checkbox?

解决方案

Define object of polyline

Polyline polyLine;

Use this class given below to drab the lines just pass your FROM to TO lat,lng

private class MapDirectionAsync extends AsyncTask<Void, Void, PolylineOptions> {
    private LatLng
            sourceLatLng,
            destinationLatLng;

    private MapDirectionAsync(LatLng sourceLatLng, LatLng destinationLatLng) {
        this.sourceLatLng = sourceLatLng;
        this.destinationLatLng = destinationLatLng;
    }

    @Override
    protected PolylineOptions doInBackground(Void... params) {
        GMapV2Direction md = new GMapV2Direction();
        Document doc = md.getDocument(sourceLatLng, destinationLatLng, GMapV2Direction.MODE_DRIVING);
        if (doc != null) {
            ArrayList<LatLng> directionPoint = md.getDirection(doc);
            PolylineOptions rectLine = new PolylineOptions().width(16).color(ContextCompat.getColor(TripsActivity.this, R.color.colorPrimary));

            float km = Float.parseFloat(md.getDistanceText(doc)) / 1000;
            String km1 = String.format(Locale.US, "%.1f", km);
            Log.e("GoogleMapRoute", "Total KM : " + km1);

            int duration = md.getDurationValue(doc);
            Log.e("GoogleMapRoute", "===============Total Duration : " + duration / 60);

            for (int i = 0; i < directionPoint.size(); i++) {
                rectLine.add(directionPoint.get(i));
            }
            return rectLine;
        }

        return null;
    }

    @Override
    protected void onPostExecute(PolylineOptions rectLine) {
        super.onPostExecute(rectLine);

        if (rectLine != null) {
            polyLine = google_Map.addPolyline(rectLine);
        } else {
            // No polyLine available
        }
    }
}

`

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