问将图片从url添加到自定义InfoWindow谷歌地图v2中

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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:background="@color/bg_color" >

<ImageView
        android:id="@+id/place_icon"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:focusable="false"" />

<TextView
    android:id="@+id/place_title"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" />

<TextView
    android:id="@+id/place_vicinity"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" />

<LinearLayout 
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:orientation="horizontal"
    android:background="@color/bg_color" >

    <RatingBar
         android:id="@+id/place_rating"
         style="?android:attr/ratingBarStyleSmall"
         android:numStars="5"
         android:rating="0"
         android:isIndicator="false"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dip" />

    <ImageView
        android:id="@+id/navigate_icon"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:focusable="false"
        android:src="@drawable/navigate" />

</LinearLayout>

mGoogleMap.setInfoWindowAdapter(new InfoWindowAdapter() {

            // Use default InfoWindow frame
            @Override
            public View getInfoWindow(Marker arg0) {
                return null;
            }

            // Defines the contents of the InfoWindow
            @Override
            public View getInfoContents(Marker arg0) {

                // Getting view from the layout file info_window_layout
                View v = getLayoutInflater().inflate(R.layout.info_window_layout, null);

                // Getting the snippet from the marker
                String snippet = arg0.getSnippet();

                // Getting the snippet from the marker
                String titlestr = arg0.getTitle();

                String cutchar1= "%#";
                String cutchar2= "%##";
                String ratingstr = snippet.substring(0,snippet.indexOf( cutchar1 ));
                String vicinitystr = snippet.substring(snippet.indexOf( cutchar1 )+2, snippet.indexOf( cutchar2 ) );
                String iconurl= snippet.substring(snippet.indexOf( cutchar2 )+3);

                // Getting reference to the TextView to set latitude
                TextView title = (TextView) v.findViewById(R.id.place_title);

                TextView vicinity = (TextView) v.findViewById(R.id.place_vicinity);

                ImageView image = (ImageView) v.findViewById(R.id.navigate_icon);

                // Setting the latitude
                title.setText(titlestr);

                // declare RatingBar object
                RatingBar rating=(RatingBar) v.findViewById(R.id.place_rating);// create RatingBar object
                if( !(ratingstr.equals("null")) ){
                    rating.setRating(Float.parseFloat(ratingstr));
                }
                vicinity.setText(vicinitystr);                  

                final DownloadImageTask download = new DownloadImageTask((ImageView) v.findViewById(R.id.place_icon) ,arg0);
                download.execute(iconurl);
                // Returning the view containing InfoWindow contents
                return v;

            }

private class DownloadImageTask extends AsyncTask<String, Void, Bitmap> {
      ImageView bmImage;
      Marker marker;
      boolean refresh;

      public DownloadImageTask(final ImageView bmImage, final Marker marker) {
          this.bmImage = bmImage;
          this.marker=marker;
          this.refresh=false;
      }

     public void SetRefresh(boolean refresh ){
         this.refresh=true;

     }

    /*  @Override
      protected void onPreExecute() 
      {
          super.onPreExecute();
          bmImage.setImageBitmap(null);
      }*/

      @Override
      protected Bitmap doInBackground(String... urls) {
          String urldisplay = urls[0];
          Bitmap mIcon11 = null;
          try {
            InputStream in = new java.net.URL(urldisplay).openStream();
            mIcon11 = BitmapFactory.decodeStream(in);
          } catch (Exception e) {
              Log.e("Error", e.getMessage());
              e.printStackTrace();
          }
          return mIcon11;
      }
      @Override
      protected void onPostExecute(Bitmap result) {
          if(!refresh){
              SetRefresh(refresh);
              bmImage.setImageBitmap(result);
              marker.showInfoWindow();
          }
      }
    }