Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright 2010, 2011, 2012 mapsforge.org
 *
 * This program is free software: you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option) any later version.
 *
 * This program 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License along with
 * this program. If not, see <http://www.gnu.org/licenses/>.
 */

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;

public class Main {
    private static final String PREFIX_FILE = "file:";
    private static final String PREFIX_JAR = "jar:";

    static Bitmap createBitmap(String src) throws IOException {
        if (src == null || src.length() == 0) {
            // no image source defined
            return null;
        }

        InputStream inputStream = createInputStream(src);
        Bitmap bitmap = BitmapFactory.decodeStream(inputStream);
        inputStream.close();
        return bitmap;
    }

    private static InputStream createInputStream(String src) throws FileNotFoundException {
        if (src.startsWith(PREFIX_JAR)) {
            String name = src.substring(PREFIX_JAR.length());
            InputStream inputStream = Thread.currentThread().getClass().getResourceAsStream(name);
            if (inputStream == null) {
                throw new FileNotFoundException("resource not found: " + src);
            }
            return inputStream;
        } else if (src.startsWith(PREFIX_FILE)) {
            File file = new File(src.substring(PREFIX_FILE.length()));
            if (!file.exists()) {
                throw new IllegalArgumentException("file does not exist: " + src);
            } else if (!file.isFile()) {
                throw new IllegalArgumentException("not a file: " + src);
            } else if (!file.canRead()) {
                throw new IllegalArgumentException("cannot read file: " + src);
            }
            return new FileInputStream(file);
        }
        throw new IllegalArgumentException("invalid bitmap source: " + src);
    }
}