如何在setOnInfoWindowClickListener中的Google Map中点击Marker的id [英] How to get id of Marker clicked in Google Map inside setOnInfoWindowClickListener

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本文介绍了如何在setOnInfoWindowClickListener中的Google Map中点击Marker的id的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

这里我要做的是在doInBackground中设置Id，并在 setOnInfoWindowClickListener 中调用它。但问题是它获得了第一个元素的Id名单。我想要的是获得被点击的标记的Id。
我使用一个变量 private static String id; 存储id product.id = productJSON.getString（ID）; / code>像这样 id = product.id; 然后分配它。 

  googlemap.setOnInfoWindowClickListener（new OnInfoWindowClickListener（）{
 
 @Override 
 public void onInfoWindowClick（Marker arg0）{
 
 intent.putExtra（PRODUCT_ID （id）; 
 startActivity（intent）; 
}

如何从ondoInBackground获取id并在 intent.putExtra（）中使用。

  public class Frnt_mapActivity extends Activity {
 
 
 JSONArray jsonarray3; 
 // Google Map 
 private static GoogleMap googlemap; 
 private static String id; 
 
 private Intent intent; 
 HashMap< Marker，Integer> hashMap = new HashMap< Marker，Integer>（）; 
 public静态LatLng latlong; 
 @Override 
 protected void onCreate（Bundle savedInstanceState）{
 super.onCreate（savedInstanceState）; 
 setContentView（R.layout.frnt_map_activity）; 
 
 
 googlemap =（（MapFragment）getFragmentManager（）。findFragmentById（R.id.places_map））。getMap（）; 
 googlemap.setMapType（GoogleMap.MAP_TYPE_NORMAL）; 
 googlemap.setMyLocationEnabled（true）; 
 googlemap.getUiSettings（）。setZoomControlsEnabled（true）; 
 googlemap.getUiSettings（）。setMyLocationButtonEnabled（true）; 
 googlemap.getUiSettings（）。setCompassEnabled（true）; 
 googlemap.getUiSettings（）。setRotateGesturesEnabled（true）; 
 googlemap.getUiSettings（）。setZoomGesturesEnabled（true）; 
 googlemap.setMyLocationEnabled（true）; 
 LatLng坐标=新LatLng（50.85514,0.58382）; 
 CameraUpdate yourLocation = CameraUpdateFactory.newLatLngZoom（coordinate，18）; 
 googlemap.animateCamera（yourLocation）; 
 
 new Frnt_mIcons_Activity（）。execute（）; 
 new LocationList（）。execute（）; 
 new LookingForList（）。execute（）; 
 CreateProductListTask responseDownloadTask = new CreateProductListTask（https://www.towncitycards.com/webservice_action.php?action=all_products）; 
 responseDownloadTask.execute（）; 
 intent = new Intent（Frnt_mapActivity.this，MainActivity.class）; 
 googlemap.setOnInfoWindowClickListener（new OnInfoWindowClickListener（）{
 
 @Override 
 public void onInfoWindowClick（Marker arg0）{
 
 intent.putExtra（PRODUCT_ID ，id）; 
 System.out.println（id）; 
 startActivity（intent）; 
} 
}）; 
 
 
 protected class CreateProductListTask extends AsyncTask< Void，Void，List< Product>> {
 
私人String serverUrl; 
 
 public CreateProductListTask（String url）{
 super（）; 
 this.serverUrl = url; 
} 
 
 @覆盖
保护列表< 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（））; 
 
 //设置验证者
 HttpsURLConnection.setDefaultHostnameVerifier（hostnameVerifier）; 
 
 
 HttpPost httpPost = new HttpPost（http://towncitycards.com/webservice_action.php?action=all_products）; 
 
 URLConnection urlConn = null; 
 BufferedReader bufferedReader = null; 
尝试
 {
 URL url = new URL（this.serverUrl）; 
 urlConn = url.openConnection（）; 
 bufferedReader = new BufferedReader（new InputStreamReader（urlConn.getInputStream（）））; 
 
 StringBuffer stringBuffer = new StringBuffer（）; 
字符串行; （（line = bufferedReader.readLine（））！= null）{
 stringBuffer.append（line）; 
 while（ 
} 
 
 JSONObject response = new JSONObject（stringBuffer.toString（））; 
 
列表<产品> products = new ArrayList<>（）; 
 HashMap< String，Bitmap> iconsMap = new HashMap<>（）; 
尝试{
 JSONArray productsJSON = response.getJSONArray（all_products）; 
 for（int ixProduct = 0; ixProduct< productsJSON.length（）; ixProduct ++）{
 JSONObject productJSON = productsJSON.getJSONObject（ixProduct）; 
字符串mapIconStr = productJSON.getString（map_icon）; 
 URI uri =新URI（mapIconStr）; 
 String [] segments = uri.getPath（）。split（/）; 
 String iconName = segments [segments.length-1]; 
 
 // percetn-encode URL 
字符串mapIconPath = mapIconStr.substring（0，mapIconStr.indexOf（iconName））; 
 String iconUrlString = mapIconPath + URLEncoder.encode（iconName，UTF-8）; 
 
 //将http：替换为https：
 iconUrlString = iconUrlString.replace（http：，https：）; 
 
位图bmp; 
 if（！iconsMap.containsKey（iconUrlString））{
 bmp = getBitmapFromURL（iconUrlString）; 
 //用独特的图标填充地图
 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; 
 bmp = Bitmap.createScaledBitmap（bmp，（int）（bmp.getWidth（）* 3），（int）（bmp.getHeight（）* 3），true）; 
 product.icon = bmp; 
 products.add（product）; 
 $ b $ catch（Exception ignore）{
} 
} 
 
} 
 
} catch（JSONException ex）{
 Log.e（App，Failure，ex）; 
} 
 
退货产品; 
 
 catch（Exception ex）
 {
 Log.e（App，yourDataTask，ex）; 
返回null; 
} 
 finally 
 {
 if（bufferedReader！= null）
 {
 try {
 bufferedReader.close（）; 
} catch（IOException e）{
 e.printStackTrace（）; 
 
 
 
 
 @Override 
 protected void onPostExecute（List< Product>产品）
 {
 if（products！= null）{
 for（final Product product：products）{
 
 googlemap.addMarker（new MarkerOptions（）
 .position（new LatLng product.lat，product.lon））
 .title（product.name）
 .icon（BitmapDescriptorFactory.fromBitmap（product.icon））
）; 
 
 
 
 
 $ b public static Bitmap getBitmapFromURL（String src）{
 try {
 URL url =新网址（src）; 
 HttpURLConnection连接=（HttpURLConnection）url.openConnection（）; 
 connection.setDoInput（true）; 
 connection.connect（）; 
 InputStream input = connection.getInputStream（）; 
 BitmapFactory.Options bmOptions = new BitmapFactory.Options（）; 
 bmOptions.inSampleSize = 1; 
 bmOptions.inJustDecodeBounds = false; 
位图myBitmap = BitmapFactory.decodeStream（input，null，bmOptions）; 
返回myBitmap; 
} catch（IOException e）{
 return null; 
 
 
 
 $ b


解决方案

为您的添加 product.id 作为标记标记：

 标记标记= googleMap.addMarker（新的MarkerOptions（）
 .position （new LatLng（product.lat，product.lon））
 .title（product.name）
 .icon（BitmapDescriptorFactory.fromBitmap（product.icon）））; 
 marker.setTag（product.id）;

然后在 OnInfoWindowClickListener code> tag ：

  googlemap.setOnInfoWindowClickListener（new OnInfoWindowClickListener（）{
 @Override 
 public void onInfoWindowClick（Marker marker）{
 intent.putExtra（PRODUCT_ID，（String）marker.getTag（））; 
 startActivity（intent）; 
 } 
}





另一个选项可能是保存 Map< Marker，String> 来存储与每个标记相关联的 id / code>：

  private Map< Marker，String> markerIds = new HashMap<>（）;

您需要创建标记并将它们存储为这样： 

  Marker marker = googleMap.addMarker（new MarkerOptions（）。position（markerPosition）.title（my marker））; 
 markerIds.put（marker， product.id）;



<然后在你的 OnInfoWindowClickListener 上获取标记：

  googlemap.setOnInfoWindowClickListener（new OnInfoWindowClickListener（）{
 @Override 
 public void onInfoWindowClick（Marker marker）{
 intent.putExtra（PRODUCT_ID， markerIds.get（标记））; 
 startActivity（intent）; 
} 
}


Here what I am trying to do is set Id inside doInBackground and call it in setOnInfoWindowClickListener.But the problem is that it is getting the Id of the first element in the list. What I want is to get Id of Marker which is clicked. I am using a variable private static String id; To store id product.id=productJSON.getString("ID"); like this id=product.id; then assign it.

googlemap.setOnInfoWindowClickListener(new OnInfoWindowClickListener() {

        @Override
        public void onInfoWindowClick(Marker arg0) {

            intent.putExtra("PRODUCT_ID",id);
            System.out.println(id);
            startActivity(intent);
        }

How can I get id from ondoInBackground and use in intent.putExtra().

public class Frnt_mapActivity extends Activity {


JSONArray jsonarray3;
 // Google Map
private static GoogleMap googlemap;
private static String id;

private Intent intent;
HashMap<Marker, Integer> hashMap=new HashMap<Marker, Integer>();
public static LatLng latlong ;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.frnt_map_activity);


    googlemap=((MapFragment)getFragmentManager().findFragmentById(R.id.places_map)).getMap();
    googlemap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
    googlemap.setMyLocationEnabled(true);
    googlemap.getUiSettings().setZoomControlsEnabled(true);
    googlemap.getUiSettings().setMyLocationButtonEnabled(true);
    googlemap.getUiSettings().setCompassEnabled(true);
    googlemap.getUiSettings().setRotateGesturesEnabled(true);
    googlemap.getUiSettings().setZoomGesturesEnabled(true);
    googlemap.setMyLocationEnabled(true);
    LatLng coordinate = new LatLng(50.85514, 0.58382);
    CameraUpdate yourLocation = CameraUpdateFactory.newLatLngZoom(coordinate, 18);
    googlemap.animateCamera(yourLocation);

    new Frnt_mIcons_Activity().execute();
    new LocationList().execute();
    new LookingForList().execute();
    CreateProductListTask responseDownloadTask = new CreateProductListTask("https://www.towncitycards.com/webservice_action.php?action=all_products");
    responseDownloadTask.execute();
    intent=new Intent(Frnt_mapActivity.this,MainActivity.class);
    googlemap.setOnInfoWindowClickListener(new OnInfoWindowClickListener() {

        @Override
        public void onInfoWindowClick(Marker arg0) {

            intent.putExtra("PRODUCT_ID",id);
            System.out.println(id);
            startActivity(intent);
        }
    });


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

    private String serverUrl;

    public CreateProductListTask(String url) {
        super();
        this.serverUrl = url;
    }

        @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("http://towncitycards.com/webservice_action.php?action=all_products");

        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:");

                    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;
                            bmp = Bitmap.createScaledBitmap(bmp,(int)(bmp.getWidth()*3), (int)(bmp.getHeight()*3), 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) {

                googlemap.addMarker(new MarkerOptions()
                        .position(new LatLng(product.lat, product.lon))
                        .title(product.name)
                        .icon(BitmapDescriptorFactory.fromBitmap(product.icon))
                );
            }
        }
    }
}

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;
    }
}

}

解决方案

Add the product.id as a tag for your Marker:

Marker marker = googleMap.addMarker(new MarkerOptions()
        .position(new LatLng(product.lat, product.lon))
        .title(product.name)
        .icon(BitmapDescriptorFactory.fromBitmap(product.icon)));
marker.setTag(product.id);

And then on your OnInfoWindowClickListener get the tag:

googlemap.setOnInfoWindowClickListener(new OnInfoWindowClickListener() {
    @Override
    public void onInfoWindowClick(Marker marker) {
        intent.putExtra("PRODUCT_ID",(String) marker.getTag());
        startActivity(intent);
    }
}

Another option could be to keep a Map<Marker, String> to store the id associated to each Marker:

private Map<Marker, String> markerIds = new HashMap<>();

You will need to create your markers and store them like this:

Marker marker = googleMap.addMarker(new MarkerOptions().position(markerPosition).title("my marker"));
markerIds.put(marker, product.id);

And then on your OnInfoWindowClickListener get the tag:

googlemap.setOnInfoWindowClickListener(new OnInfoWindowClickListener() {
    @Override
    public void onInfoWindowClick(Marker marker) {
        intent.putExtra("PRODUCT_ID",markerIds.get(marker));
        startActivity(intent);
    }
}

这篇关于如何在setOnInfoWindowClickListener中的Google Map中点击Marker的id的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！

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