Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright (C) 2009 University of Washington
 *
 * 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 android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.util.Log;
import java.io.File;

public class Main {
    private final static String t = "FileUtils";

    public static Bitmap getBitmapScaledToDisplay(File f, int screenHeight, int screenWidth) {
        // Determine image size of f
        BitmapFactory.Options o = new BitmapFactory.Options();
        o.inJustDecodeBounds = true;
        BitmapFactory.decodeFile(f.getAbsolutePath(), o);

        int heightScale = o.outHeight / screenHeight;
        int widthScale = o.outWidth / screenWidth;

        // Powers of 2 work faster, sometimes, according to the doc.
        // We're just doing closest size that still fills the screen.
        int scale = Math.max(widthScale, heightScale);

        // get bitmap with scale ( < 1 is the same as 1)
        BitmapFactory.Options options = new BitmapFactory.Options();
        options.inInputShareable = true;
        options.inPurgeable = true;
        options.inSampleSize = scale;
        Bitmap b = BitmapFactory.decodeFile(f.getAbsolutePath(), options);
        if (b != null) {
            Log.i(t, "Screen is " + screenHeight + "x" + screenWidth + ".  Image has been scaled down by " + scale
                    + " to " + b.getHeight() + "x" + b.getWidth());
        }
        return b;
    }
}