地图标记未在模拟器上显示，但在真实设备上工作

Question

主要是发生了什么事情App并没有在真正的设备上工作，但在我的情况下，它不适用于模拟器。我在我朋友的真实设备上测试应用程序（API 23）。它工作正常，显示所有地图标记和其他数据。 。但是在模拟器（API 23,25,26）上，它没有显示地图标记。

这是我的代码：

 protected class CreateProductListTask extends AsyncTask<Void, Void, List<Product>> {

    private String serverUrl;

    public CreateProductListTask(String url) {
        super();
        this.serverUrl = url;
    }
    @Override
    protected void onPreExecute() {
        mDialog = new ProgressDialog(Frnt_mapActivity.this);
        mDialog.setMessage("Loading...");
        mDialog.setCancelable(false);
        mDialog.show();
        super.onPreExecute();
    }

    @Override
    protected List<Product> doInBackground(Void... params) {

        HostnameVerifier hostnameVerifier = org.apache.http.conn.ssl.SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER;

        DefaultHttpClient client = new DefaultHttpClient();

        SchemeRegistry registry = new SchemeRegistry();
        SSLSocketFactory socketFactory = SSLSocketFactory.getSocketFactory();
        socketFactory.setHostnameVerifier((X509HostnameVerifier) hostnameVerifier);
        registry.register(new Scheme("http", socketFactory, 443));
        SingleClientConnManager mgr = new SingleClientConnManager(client.getParams(), registry);
        DefaultHttpClient httpClient = new DefaultHttpClient(mgr, client.getParams());

        // Set verifier
        HttpsURLConnection.setDefaultHostnameVerifier(hostnameVerifier);


        HttpPost httpPost = new HttpPost("my url");

        URLConnection urlConn = null;
        BufferedReader bufferedReader = null;
        try {
            URL url = new URL(this.serverUrl);
            urlConn = url.openConnection();
            bufferedReader = new BufferedReader(new InputStreamReader(urlConn.getInputStream()));

            StringBuffer stringBuffer = new StringBuffer();
            String line;
            while ((line = bufferedReader.readLine()) != null) {
                stringBuffer.append(line);
            }

            JSONObject response = new JSONObject(stringBuffer.toString());

            List<Product> products = new ArrayList<>();
            HashMap<String, Bitmap> iconsMap = new HashMap<>();
            try {
                JSONArray productsJSON = response.getJSONArray("all_products");
                for (int ixProduct = 0; ixProduct < productsJSON.length(); ixProduct++) {
                    JSONObject productJSON = productsJSON.getJSONObject(ixProduct);
                    String mapIconStr = productJSON.getString("map_icon");
                    URI uri = new URI(mapIconStr);
                    String[] segments = uri.getPath().split("/");
                    String iconName = segments[segments.length - 1];

                    // percetn-encode URL
                    String mapIconPath = mapIconStr.substring(0, mapIconStr.indexOf(iconName));
                    String iconUrlString = mapIconPath + URLEncoder.encode(iconName, "UTF-8");

                    // replace "http:" with "https:"
                    iconUrlString = iconUrlString.replace("http:", "https:");

                    Log.d("Icon Load ", "doInBackground: "+ iconUrlString);
                    Bitmap bmp;
                    if (!iconsMap.containsKey(iconUrlString)) {
                        bmp = getBitmapFromURL(iconUrlString);
                        // populate map with unique icons
                        iconsMap.put(iconUrlString, bmp);
                    } else {
                        bmp = iconsMap.get(iconUrlString);
                    }

                    if (bmp != null) {
                        try {
                            Product product = new Product();
                            product.id = productJSON.getString("ID");
                            product.name = productJSON.getString("post_title");
                            product.lat = productJSON.getDouble("latitude");
                            product.lon = productJSON.getDouble("longitude");
                            id = product.id;
                            System.out.println("my Id stored" + id);
                            bmp = Bitmap.createScaledBitmap(bmp, (int) (bmp.getWidth() * 2.5), (int) (bmp.getHeight() * 2.5), true);
                            product.icon = bmp;
                            products.add(product);
                        } catch (Exception ignore) {
                        }

                    }

                }

            } catch (JSONException ex) {
                Log.e("App", "Failure", ex);
            }

            return products;
        } catch (Exception ex) {
            Log.e("App", "yourDataTask", ex);
            return null;
        } finally {
            if (bufferedReader != null) {
                try {
                    bufferedReader.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }

    @Override
    protected void onPostExecute(List<Product> products) {
        if (products != null) {
            for (final Product product : products) {

                Marker marker = googlemap.addMarker(new MarkerOptions()
                        .position(new LatLng(product.lat, product.lon))
                        .title(product.name)
                        .icon(BitmapDescriptorFactory.fromBitmap(product.icon)));
                markerIds.put(marker, product.id);
            }
            if (mDialog != null && mDialog.isShowing()) {
                mDialog.dismiss();
            }
        }
    }
}

public static Bitmap getBitmapFromURL(String src) {
    try {
        URL url = new URL(src);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setDoInput(true);
        connection.connect();
        InputStream input = connection.getInputStream();
        BitmapFactory.Options bmOptions = new BitmapFactory.Options();
        bmOptions.inSampleSize = 1;
        bmOptions.inJustDecodeBounds = false;
        Bitmap myBitmap = BitmapFactory.decodeStream(input, null, bmOptions);
        return myBitmap;
    } catch (IOException e) {
        return null;
    }
}

  

我没有Android设备。这就是我必须在模拟器上测试它的方式。