Android Open Source - android-mapviewballoons Custom Balloon Overlay View

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License

The source code is released under:

Apache License

Java Source Code

/***
 * Copyright (c) 2011 readyState Software Ltd
 * //from www  .  j a  va2s.  c om
 * Licensed under the Apache License, Version 2.0 (the "License"); you may
 * not use this file except in compliance with the License. You may obtain
 * a copy of the License at
 * http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 */

package mapviewballoons.example.custom;

import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.AsyncTask;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;

import com.google.android.maps.OverlayItem;
import com.readystatesoftware.mapviewballoons.BalloonOverlayView;
import com.readystatesoftware.mapviewballoons.R;

public class CustomBalloonOverlayView<Item extends OverlayItem> extends BalloonOverlayView<CustomOverlayItem> {

  private TextView title;
  private TextView snippet;
  private ImageView image;
  
  public CustomBalloonOverlayView(Context context, int balloonBottomOffset) {
    super(context, balloonBottomOffset);
  }
  
  @Override
  protected void setupView(Context context, final ViewGroup parent) {
    
    // inflate our custom layout into parent
    LayoutInflater inflater = (LayoutInflater) context
        .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    View v = inflater.inflate(R.layout.balloon_overlay_example2, parent);
    
    // setup our fields
    title = (TextView) v.findViewById(R.id.balloon_item_title);
    snippet = (TextView) v.findViewById(R.id.balloon_item_snippet);
    image = (ImageView) v.findViewById(R.id.balloon_item_image);

  }

  @Override
  protected void setBalloonData(CustomOverlayItem item, ViewGroup parent) {
    
    // map our custom item data to fields
    title.setText(item.getTitle());
    snippet.setText(item.getSnippet());
    
    // get remote image from network.
    // bitmap results would normally be cached, but this is good enough for demo purpose.
    image.setImageResource(R.drawable.icon);
    new FetchImageTask() { 
          protected void onPostExecute(Bitmap result) {
              if (result != null) {
                image.setImageBitmap(result);
              }
          }
      }.execute(item.getImageURL());
    
  }

  private class FetchImageTask extends AsyncTask<String, Integer, Bitmap> {
      @Override
      protected Bitmap doInBackground(String... arg0) {
        Bitmap b = null;
        try {
         b = BitmapFactory.decodeStream((InputStream) new URL(arg0[0]).getContent());
      } catch (MalformedURLException e) {
        e.printStackTrace();
      } catch (IOException e) {
        e.printStackTrace();
      } 
          return b;
      }  
  }
  
}

Java Source Code List

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