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如何防止谷歌地图android中的多段线重叠?_Android_Google Maps_Google Polyline - Fatal编程技术网

如何防止谷歌地图android中的多段线重叠?

如何防止谷歌地图android中的多段线重叠?,android,google-maps,google-polyline,Android,Google Maps,Google Polyline,大家好,这可能是一个愚蠢的问题,但到目前为止,我还没有找到任何解决办法。现在让我问一下我的疑问,我正在使用多条多段线绘制多条管线,每条多段线都有不同的颜色,但当两个点与最后一条多段线相交时,如何防止它被覆盖。它必须看起来是唯一的第一条路线应该有一种颜色,所有其他路线必须有相同的颜色如何做到这一点,让我张贴代码,我已经尝试了到目前为止: public class GetDistance extends AsyncTask<Double, Void, String> {

大家好,这可能是一个愚蠢的问题,但到目前为止,我还没有找到任何解决办法。现在让我问一下我的疑问,我正在使用多条多段线绘制多条管线,每条多段线都有不同的颜色,但当两个点与最后一条多段线相交时,如何防止它被覆盖。它必须看起来是唯一的第一条路线应该有一种颜色,所有其他路线必须有相同的颜色如何做到这一点,让我张贴代码,我已经尝试了到目前为止:

  public class GetDistance extends AsyncTask<Double, Void, String> {
            private ProgressDialog pd;
            private static final int READ_TIMEOUT = 6000;
            private static final int CONNECTION_TIMEOUT = 6000;
            private int flag;
            public GetDistance(int flag) {
                this.flag=flag;
            }

            @Override
            protected void onPreExecute() {
                super.onPreExecute();
                pd = new ProgressDialog(VisitTravel.this);
                pd.setMessage("Please wait");
                pd.show();
            }



            @Override
            protected String doInBackground(Double... strings) {
                URL url;
                try {
                    url = new URL("http://maps.googleapis.com/maps/api/directions/json?origin=" + strings[0] + "," + strings[1] + "&destination=" + strings[2] + "," + strings[3] + "&sensor=false&units=metric&mode=driving&alternatives=true");

                    HttpURLConnection conn;
                    conn = (HttpURLConnection) url.openConnection();
                    conn.setReadTimeout(READ_TIMEOUT);
                    conn.setConnectTimeout(CONNECTION_TIMEOUT);


                    conn.setRequestMethod("POST");

                    InputStream in;

                    in = new BufferedInputStream(conn.getInputStream());

                    StringBuilder buffer = new StringBuilder();
                    BufferedReader reader;
                    reader = new BufferedReader(new InputStreamReader(in));
                    String inputLine;
                    while ((inputLine = reader.readLine()) != null)
                        buffer.append(inputLine).append("\n");
                    if (buffer.length() == 0) {
                        // Stream was empty. No point in parsing.
                        Log.e("empty", "empty");
                    }
                    JsonResponse = buffer.toString();
                    Log.d("response", JsonResponse);


                } catch (IOException e1) {
                    e1.printStackTrace();
                }


                return JsonResponse;
            }
            @Override
            protected void onPostExecute(String result) {
                super.onPostExecute(result);
                pd.dismiss();
                if(flag==1) {
                    new ParserTask().execute(result);
                }}

        }
       private class ParserTask extends AsyncTask<String, Integer, List<List<HashMap<String, String>>>> {
            private ArrayList<LatLng> points;

            @Override
            protected List<List<HashMap<String, String>>> doInBackground(String... jsonData) {

                JSONObject jObject;
                List<List<HashMap<String, String>>> routes = null;

                try {
                    jObject = new JSONObject(jsonData[0]);
                    DirectionJSONParser parser = new DirectionJSONParser();

                    // Starts parsing data
                    routes = parser.parse(jObject);
                } catch (Exception e) {
                    e.printStackTrace();
                }
                return routes;
            }

            @Override
            protected void onPostExecute(List<List<HashMap<String, String>>> result) {
                PolylineOptions polylineOptionss=null;
                //      MarkerOptions markerOptions = new MarkerOptions();
                 // Traversing through all the routes
                for (int i = 0; i < result.size(); i++) {
                    points = new ArrayList<>();


                    // Fetching i-th route
                    List<HashMap<String, String>> path = result.get(i);

                    // Fetching all the points in i-th route
                    for (int j = 0; j < path.size(); j++) {
                        HashMap<String, String> point = path.get(j);

                    if (j == 0) {
                          duration = point.get("duration");
                           Log.d("duration", duration);
                           continue;
                      }
                        double lat = Double.parseDouble(point.get("lat"));
                        double lng = Double.parseDouble(point.get("lng"));
                        LatLng position = new LatLng(lat, lng);

                        points.add(position);

                    }
                     polylineOptionss=new PolylineOptions();
                    // Adding all the points in the route to LineOptions
                    polylineOptionss.addAll(points);
                  //  polylineOptions.width(7);
               //     Random rnd = new Random();
                 //   int color = Color.argb(255, rnd.nextInt(256), rnd.nextInt(256), rnd.nextInt(256));
                    if(i==0) {
                          polylineOptions0=new PolylineOptions();
                        polylineOptions0.addAll(points);
                     //   mGoogleMap.setTrafficEnabled(true);
                        polylineOptions0.width(15);
                           polylineOptions0.color(Color.parseColor("#9c27b0"));
                        polylineOptions0.geodesic(true);
                      Polyline polyline=  mGoogleMap.addPolyline(polylineOptions0);
                        polyline.setTag(duration);
                        polyline.setClickable(true);

                    }
//Here only differentiating each and every route.
                    else if(i==1){
                          polylineOptions1=new PolylineOptions();
                        polylineOptions1.addAll(points);
                        polylineOptions1.geodesic(true);
                        polylineOptions1.width(15);
                     //   mGoogleMap.setTrafficEnabled(true);
                        polylineOptions1.color(Color.parseColor("#9e9e9e"));
                        Polyline polyline=  mGoogleMap.addPolyline(polylineOptions1);
                        polyline.setTag(duration);
                        polyline.setClickable(true);

                    ///
                    }
                    else if(i==2){
                            polylineOptions2=new PolylineOptions();
                        polylineOptions2.addAll(points);
                        polylineOptions2.geodesic(true);
                        polylineOptions2.width(15);
                        polylineOptions2.color(Color.parseColor("#9c27b0"));
                        Polyline polyline=  mGoogleMap.addPolyline(polylineOptions2);
                        polyline.setTag(duration);
                        polyline.setClickable(true);
                        //     mGoogleMap.setTrafficEnabled(true);
                   //
                    }
                    else {
                          polylineOptions3=new PolylineOptions();
                        polylineOptions3.addAll(points);
                  //      mGoogleMap.setTrafficEnabled(true);
                        polylineOptions3.width(15);
                        polylineOptions3.geodesic(true);
                        polylineOptions3.color(Color.parseColor("#9e9e9e"));
                        Polyline polyline=  mGoogleMap.addPolyline(polylineOptions3);
                        polyline.setTag(duration);
                        polyline.setClickable(true);
                        ///     polylineOptions3.color(Color.parseColor("#ffffff"));
                    }

                }
                setBottomSheet(jsonresponse, edt.getText().toString(),1);
                CameraAnimation(polylineOptionss);
              //  mGoogleMap.addPolyline(polylineOptions);
                // Drawing polyline in the Google Map for the i-th route



            }
        }
公共类GetDistance扩展异步任务{
私营部门;
专用静态最终整型读取超时=6000;
专用静态最终int连接\u超时=6000;
私人int标志;
公共GetDistance(int标志){
这个.flag=flag;
}
@凌驾
受保护的void onPreExecute(){
super.onPreExecute();
pd=新建进度对话框(访问travel.this);
pd.setMessage(“请稍候”);
pd.show();
}
@凌驾
受保护字符串背景(双…字符串){
网址;
试一试{
url=新url(“http://maps.googleapis.com/maps/api/directions/json?origin=“+strings[0]+”、“+strings[1]+”&destination=“+strings[2]+”、“+strings[3]+”&sensor=false&units=metric&mode=driving&alternatives=true”);
httpurl连接连接;
conn=(HttpURLConnection)url.openConnection();
conn.setReadTimeout(读取超时);
连接设置连接超时(连接超时);
conn.setRequestMethod(“POST”);
输入流输入;
in=新的BufferedInputStream(conn.getInputStream());
StringBuilder缓冲区=新的StringBuilder();
缓冲读取器;
reader=新的BufferedReader(新的InputStreamReader(in));
字符串输入线;
而((inputLine=reader.readLine())!=null)
buffer.append(inputLine.append(“\n”);
if(buffer.length()==0){
//流为空。在分析中没有意义。
Log.e(“空”、“空”);
}
JsonResponse=buffer.toString();
Log.d(“响应”,JsonResponse);
}捕获(IOE1异常){
e1.printStackTrace();
}
返回JsonResponse;
}
@凌驾
受保护的void onPostExecute(字符串结果){
super.onPostExecute(结果);
pd.解散();
如果(标志==1){
新建ParserTask()。执行(结果);
}}
}
私有类ParserTask扩展了AsyncTask{
私有数组列表点;
@凌驾
受保护列表doInBackground(字符串…jsonData){
JSONObject jObject;
列表路由=空;
试一试{
jObject=新的JSONObject(jsonData[0]);
DirectionJSONParser=新的DirectionJSONParser();
//开始解析数据
routes=parser.parse(jObject);
}捕获(例外e){
e、 printStackTrace();
}
返回路线;
}
@凌驾
受保护的void onPostExecute(列表结果){
多段线选项多段线选项S=null;
//MarkerOptions MarkerOptions=新MarkerOptions();
//穿越所有路线
对于(int i=0;i            final List<Polyline> polylines = new ArrayList<>();

            for(int i= 0; i<paths.size(); i++ ){
                polylines.add(mMap.addPolyline(paths.get(i)));
            }

            mMap.setOnPolylineClickListener(new GoogleMap.OnPolylineClickListener() {
                @Override
                public void onPolylineClick(Polyline polyline) {



                    for(int i= 0; i<polylines.size(); i++ ){

                        polylines.get(i).setColor(Color.argb(255,187,189,191));
                        polylines.get(i).setZIndex(0);
                    }


                    polyline.setColor(Color.argb(255,102,157,246));
                    polyline.setZIndex(2);



                }
            });