android - 如何在 Mapbox android 中添加自定义视图作为标记？

Question

所以我想在我的 android 应用程序中添加自定义视图标记，我从 API 请求中获取坐标，并且我想在它们各自的标记上显示这些地方的徽标。我从同一个 API 请求中获取标记的 URL。此外，我希望所有标记都成为单个符号图层的一部分，因为我也想对这些标记进行聚类。图片来源：谷歌图片搜索。

Answer 1

我已经解决了这个问题。

首先，您必须创建一个私有类，该类将为您获取数据，然后将其存储在数组中。

private class getgeo extends AsyncTask<Void, Void, Void> {

    @Override
    protected void onPreExecute() {
        super.onPreExecute();
        // Showing progress dialog
        pDialog = new ProgressDialog(Poi_View.this);
        pDialog.setMessage("Please wait...");
        pDialog.setCancelable(false);
        pDialog.show();

    }

    @Override
    protected Void doInBackground(Void... arg0) {
        HttpHandler sh = new HttpHandler();

        // Making a request to url and getting response
        String jsonStr = sh.makeServiceCall(url);

        Log.e(TAG, "Response from url: " + jsonStr);

        if (jsonStr != null) {
            try {
                JSONObject jsonObj = new JSONObject(jsonStr);

                // Getting JSON Array node
                JSONArray contacts = jsonObj.getJSONArray("data");

                // looping through All Contacts
                for (int i = 0; i < contacts.length(); i++) {
                    JSONObject JO = (JSONObject) contacts.get(i);
                   /* if(JO.has("devices"))
                    {
                        Toast.makeText(Index.this,"No Data Found",Toast.LENGTH_LONG).show();
                    }*/
                    JSONObject jb = (JSONObject) JO.get("ro");


                    String name = jb.getString("name");
                    String center = jb.getString("center");


                    HashMap<String, String> contact = new HashMap<>();


                    contact.put("name", name);
                    contact.put("center", center);


                    // adding contact to contact list
                    contactList.add(contact);
                }
            } catch (final JSONException e) {
                Log.e(TAG, "Json parsing error: " + e.getMessage());
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        Toast.makeText(getApplicationContext(),
                                "Your Internet Connection is Weak. Try Reloading Your Page",
                                Toast.LENGTH_LONG)
                                .show();
                    }
                });

            }
        } else {
            Log.e(TAG, "Couldn't get json from server.");
            runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    Toast.makeText(getApplicationContext(),
                            "Check Your Internet Connection",
                            Toast.LENGTH_LONG)
                            .show();
                }
            });

        }

        return null;
    }

    @Override
    protected void onPostExecute(Void result) {
        super.onPostExecute(result);
        // Dismiss the progress dialog
        if (pDialog.isShowing())
            pDialog.dismiss();

    }

}

之后，您必须在 mapbox onStyleloaded() 方法中执行它

public void onStyleLoaded(@NonNull Style style) {

    for(int a=0;a<contactList.size();a++)
    {
        HashMap<String, String> hashmap = contactList.get(a);
        pump_name= hashmap.get("name");
        pump_center= hashmap.get("center");
        String fullname = pump_center;
        String[] names = fullname.split(",", 3); // "1" means stop splitting after one space
        String firstName = names[0];
        String lastName = names[1];
        double lat = Double.parseDouble(firstName);
        double lng = Double.parseDouble(lastName);
        System.out.println(lat);
        System.out.println(pump_name);
        mapboxMap.addMarker(new MarkerOptions()
                .position(new LatLng(lat, lng))
                .title(pump_name));
        //onMapReady(mapboxMap);
    }
}

Answer 2

查看https://docs.mapbox.com/android/maps/examples/symbol-layer-info-window。GenerateViewIconTask在该示例中，使用 aView创建一个Bitmap. ( Bitmaps) 添加到地图中以用作SymbolLayer图标。

或者，您可以使用 Android 版 Mapbox 注释插件：https ://docs.mapbox.com/android/plugins/overview/annotation/