Android Open Source - NVS Balloon Overlay View

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License

The source code is released under:
Apache License
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Java Source Code

/***
 * Copyright (c) 2010 readyState Software Ltd
 * //from   w w w.  j  a v  a  2s .  com
 * 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 com.jmuenster.map;

import android.content.Context;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.FrameLayout;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;

import com.jmuenster.extras.StickyNote;
import com.jmuenster.poi.R;

/**
 * A view representing a MapView marker information balloon.
 * <p>
 * This class has a number of Android resource dependencies:
 * <ul>
 * <li>drawable/balloon_overlay_bg_selector.xml</li>
 * <li>drawable/balloon_overlay_close.png</li>
 * <li>drawable/balloon_overlay_focused.9.png</li>
 * <li>drawable/balloon_overlay_unfocused.9.png</li>
 * <li>layout/balloon_map_overlay.xml</li>
 * </ul>
 * </p>
 * 
 * @author Jeff Gilfelt, Julian Munster
 *
 */
public class BalloonOverlayView<Item extends StickyNote> extends FrameLayout {

  private LinearLayout layout;
  private TextView title;
  private TextView snippet;

  /**
   * Create a new BalloonOverlayView.
   * 
   * @param context - The activity context.
   * @param balloonBottomOffset - The bottom padding (in pixels) to be applied
   * when rendering this view.
   */
  public BalloonOverlayView(Context context, int balloonBottomOffset) {

    super(context);

    setPadding(10, 0, 10, balloonBottomOffset);
    layout = new LinearLayout(context);
    layout.setVisibility(VISIBLE);

    LayoutInflater inflater = (LayoutInflater) context
        .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    View v = inflater.inflate(R.layout.balloon_overlay, layout);
    title = (TextView) v.findViewById(R.id.balloon_item_title);
    snippet = (TextView) v.findViewById(R.id.balloon_item_snippet);

    ImageView close = (ImageView) v.findViewById(R.id.close_img_button);
    close.setOnClickListener(new OnClickListener() {
      public void onClick(View v) {
        layout.setVisibility(GONE);
      }
    });

    FrameLayout.LayoutParams params = new FrameLayout.LayoutParams(
        LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
    params.gravity = Gravity.NO_GRAVITY;

    addView(layout, params);

  }
  
  /**
   * Sets the view data from a given overlay item.
   * 
   * @param item - The overlay item containing the relevant view data 
   * (title and snippet). 
   */
  public void setData(Item item) {
    
    layout.setVisibility(VISIBLE);
    if (item.getTitle() != null) {
      title.setVisibility(VISIBLE);
      title.setText(item.getTitle());
    } else {
      title.setVisibility(GONE);
    }
    if (item.getSnippet() != null) {
      snippet.setVisibility(VISIBLE);
      snippet.setText(item.getSnippet());
    } else {
      snippet.setVisibility(GONE);
    }
    
  }

}
Java Source Code List
