Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import java.io.InputStream;

import android.graphics.BitmapFactory;

public class Main {
    /**
     * Compute the inSampleSize for BitmapFactory.Option to scale down bitmap size into required size.
     * @param options
     * @param requireWidth
     * @param requireHeight
     * @return
     */
    public static int computeInSampleSize(BitmapFactory.Options options, int requireWidth, int requireHeight) {
        int inSampleSize = 1;
        final int height = options.outHeight;
        final int width = options.outWidth;
        if (height > requireHeight || width > requireWidth) {
            final int halfHeight = height / 2;
            final int halfWidth = width / 2;
            while (((halfHeight / inSampleSize) > requireHeight) && ((halfWidth / inSampleSize) > requireWidth)) {
                inSampleSize *= 2;
            }
        }
        return inSampleSize;
    }

    public static int computeInSampleSize(InputStream inputStream, int requireWidth, int requireHeight) {
        final BitmapFactory.Options options = new BitmapFactory.Options();
        options.inJustDecodeBounds = true;
        BitmapFactory.decodeStream(inputStream, null, options);
        return computeInSampleSize(options, requireWidth, requireHeight);
    }
}