ca.marcmeszaros.papyrus.tools.TNManager.java Source code

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Here is the source code for ca.marcmeszaros.papyrus.tools.TNManager.java

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/**
 * Copyright 2011 Marc Meszaros
 *
 * 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 ca.marcmeszaros.papyrus.tools;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Environment;
import android.util.Log;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.entity.BufferedHttpEntity;
import org.apache.http.impl.client.DefaultHttpClient;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URISyntaxException;
import java.net.URL;

public class TNManager {

    private static final String TAG = "TNManager";
    private static final String path = "/Android/data/ca.marcmeszaros.papyrus/files/";

    /**
     * Downloads and saves the thumbnail of a book to the SD card.
     *
     * @param thumbnailURL the URL to the thumbnail
     * @param isbn the ISBN number of the book
     * @return {@code true} on success or {@code false} on failure
     */
    public static boolean saveThumbnail(Bitmap bitmap, String isbn) {
        // make sure we have access to the SD card
        if (Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())) {
            try {
                // if the folder on the SD carld doesn't exist, create it
                if (!(new File(Environment.getExternalStorageDirectory(), path).exists())) {
                    new File(Environment.getExternalStorageDirectory(), path).mkdirs();
                    // creates the ".nomedia" file to hide content from "Gallery"
                    new File(Environment.getExternalStorageDirectory(), path + ".nomedia").createNewFile();
                }

                // create the thumbnail
                File thumbnail = new File(Environment.getExternalStorageDirectory(), path + isbn + ".jpg");

                // if the file doesn't exist, create it and get the data
                if (!thumbnail.exists()) {
                    thumbnail.createNewFile();
                    FileOutputStream out = new FileOutputStream(thumbnail);

                    bitmap.compress(Bitmap.CompressFormat.JPEG, 100, out);
                }

            } catch (IOException e) {
                Log.e(TAG, "IOException", e);
            }
        } else {
            return false;
        }
        return true;
    }

    /**
     * Return a File handler to the book thumbnail.
     *
     * @param isbn the ISBN number to the book to get
     * @return a {@code File} handle to the thumbnail image
     */
    public static File getThumbnail(String isbn) {
        return new File(Environment.getExternalStorageDirectory(), path + isbn + ".jpg");
    }

    /**
     * Delete a book thumbnail using it's ISBN number.
     *
     * @param isbn the ISBN number to delete
     * @return {@code true} on operation success or {@code false} on failure
     */
    public static boolean deleteThumbnail(String isbn) {
        return new File(Environment.getExternalStorageDirectory(), path + isbn + ".jpg").delete();
    }

}