Android InputStream to Bitmap Convert loadCompatibleImage(InputStream stream)

Description

load Compatible Image

License

Apache License

Declaration

public static BufferedImage loadCompatibleImage(InputStream stream)
            throws IOException 

Method Source Code

//package com.java2s;
/*//w w w.  j a v a2  s.  c om
 * Copyright (C) 2008 The Android Open Source Project
 *
 * 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.
 */

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;

import java.awt.GraphicsConfiguration;
import java.awt.GraphicsEnvironment;
import java.awt.Graphics;

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

public class Main {
    public static BufferedImage loadCompatibleImage(URL resource)
            throws IOException {
        BufferedImage image = ImageIO.read(resource);
        return toCompatibleImage(image);
    }

    public static BufferedImage loadCompatibleImage(InputStream stream)
            throws IOException {
        BufferedImage image = ImageIO.read(stream);
        return toCompatibleImage(image);
    }

    public static BufferedImage toCompatibleImage(BufferedImage image) {
        if (isHeadless()) {
            return image;
        }

        if (image.getColorModel().equals(
                getGraphicsConfiguration().getColorModel())) {
            return image;
        }

        BufferedImage compatibleImage = getGraphicsConfiguration()
                .createCompatibleImage(image.getWidth(), image.getHeight(),
                        image.getTransparency());
        Graphics g = compatibleImage.getGraphics();
        g.drawImage(image, 0, 0, null);
        g.dispose();

        return compatibleImage;
    }

    private static boolean isHeadless() {
        return GraphicsEnvironment.isHeadless();
    }

    private static GraphicsConfiguration getGraphicsConfiguration() {
        GraphicsEnvironment environment = GraphicsEnvironment
                .getLocalGraphicsEnvironment();
        return environment.getDefaultScreenDevice()
                .getDefaultConfiguration();
    }

    public static BufferedImage createCompatibleImage(int width, int height) {
        return getGraphicsConfiguration().createCompatibleImage(width,
                height);
    }

    public static BufferedImage createCompatibleImage(BufferedImage image,
            int width, int height) {
        return getGraphicsConfiguration().createCompatibleImage(width,
                height, image.getTransparency());
    }
}

Related

1. toBitmap(InputStream is)
2. toBitmap(InputStream is)
3. toBitmapDrawable(InputStream is)
4. toBitmapDrawable(InputStream is)