net.naonedbus.card.impl.MapCard.java Source code

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Here is the source code for net.naonedbus.card.impl.MapCard.java

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/**
 * Copyright (C) 2013 Romain Guefveneu.
 *   
 *  This file is part of naonedbus.
 *   
 *  Naonedbus is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *  
 *  Naonedbus is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *  
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package net.naonedbus.card.impl;

import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.Locale;

import net.naonedbus.R;
import net.naonedbus.card.Card;
import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.location.Location;
import android.os.Bundle;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.LoaderManager;
import android.support.v4.content.AsyncTaskLoader;
import android.support.v4.content.Loader;
import android.view.View;
import android.view.ViewTreeObserver;
import android.widget.ImageView;

public class MapCard extends Card<Bitmap> {

    private static final String MAP_URL = "http://maps.google.com/maps/api/staticmap?zoom=14&scale=1&size=%dx%d&sensor=true&markers=color:blue%%7C%f,%f&format=jpg";
    private static final String MAP_URL_CURRENT_LOCATION = "http://maps.google.com/maps/api/staticmap?scale=1&size=%dx%d&sensor=true&markers=color:blue%%7C%f,%f&center=%f,%f&format=jpg";
    private static final String PARAM_URL = "url";

    private final Float mLatitude;
    private final Float mLongitude;

    private Location mCurrentLocation;

    private ImageView mImageView;

    public MapCard(final Context context, final LoaderManager loaderManager, final FragmentManager fragmentManager,
            final Float latitude, final Float longitude) {
        super(context, loaderManager, fragmentManager, R.string.card_plan_title, R.layout.card_map);

        mLatitude = latitude;
        mLongitude = longitude;
    }

    public void setCurrentLocation(final Location currentLocation) {
        mCurrentLocation = currentLocation;
    }

    @Override
    protected Intent getMoreIntent() {
        // final Intent intent = new Intent(getContext(), MapActivity.class);
        // intent.putExtra(Intent.EXTRA_TITLE, R.string.card_more_map);
        // intent.putExtra(Intent.EXTRA_SHORTCUT_ICON,
        // R.drawable.ic_card_navigate);
        // return intent;
        return null;
    }

    @Override
    protected void bindView(final Context context, final View base, final View view) {

        mImageView = (ImageView) view;
        showContent();
        final ViewTreeObserver obs = mImageView.getViewTreeObserver();
        obs.addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener() {
            @Override
            public boolean onPreDraw() {
                if (mImageView.getWidth() != 0) {
                    mImageView.getViewTreeObserver().removeOnPreDrawListener(this);
                    fillView(mImageView);
                }
                return true;
            }
        });

    }

    private void fillView(final ImageView imageView) {
        final String url;
        if (mCurrentLocation == null) {
            url = String.format(Locale.ENGLISH, MAP_URL, imageView.getMeasuredWidth(),
                    imageView.getMeasuredHeight(), mLatitude, mLongitude);
        } else {
            url = String.format(Locale.ENGLISH, MAP_URL_CURRENT_LOCATION, imageView.getMeasuredWidth(),
                    imageView.getMeasuredHeight(), mLatitude, mLongitude, mCurrentLocation.getLatitude(),
                    mCurrentLocation.getLongitude());
        }

        final Bundle bundle = new Bundle();
        bundle.putString(PARAM_URL, url);

        initLoader(bundle, this).forceLoad();
    }

    @Override
    public Loader<Bitmap> onCreateLoader(final int id, final Bundle bundle) {
        return new LoaderTask(getContext(), bundle.getString(PARAM_URL));
    }

    @Override
    public void onLoadFinished(final Loader<Bitmap> loader, final Bitmap bitmap) {
        mImageView.setImageBitmap(bitmap);
        showContent();
    }

    private static class LoaderTask extends AsyncTaskLoader<Bitmap> {

        private final String mUrl;

        public LoaderTask(final Context context, final String url) {
            super(context);
            mUrl = url;
        }

        @Override
        public Bitmap loadInBackground() {
            try {
                final URL url = new URL(mUrl);
                final HttpURLConnection connection = (HttpURLConnection) url.openConnection();
                connection.setDoInput(true);
                connection.connect();
                final InputStream input = connection.getInputStream();
                final Bitmap myBitmap = BitmapFactory.decodeStream(input);
                return myBitmap;
            } catch (final IOException e) {
                e.printStackTrace();
                return null;
            }
        }

    }

}