Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Apache License 

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;
import android.graphics.BitmapFactory.Options;

import java.io.File;

public class Main {
    public static Bitmap decodeSampledBitmapFromFile(File file, int reqWidth, int reqHeight) {
        // First decode with inJustDecodeBounds=true to check dimensions
        final Options options = new Options();
        options.inJustDecodeBounds = true;
        BitmapFactory.decodeFile(file.getAbsolutePath(), options);

        // Calculate inSampleSize
        options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);

        // Decode bitmap with inSampleSize set
        options.inJustDecodeBounds = false;
        return BitmapFactory.decodeFile(file.getAbsolutePath(), options);
    }

    public static int calculateInSampleSize(Options options, int reqWidth, int reqHeight) {
        // Raw height and width of image
        final int height = options.outHeight;
        final int width = options.outWidth;

        return calculateInSampleSize(width, height, reqWidth, reqHeight);
    }

    public static int calculateInSampleSize(int width, int height, int reqWidth, int reqHeight) {
        int inSampleSize = 1;
        if (height > reqHeight || width > reqWidth) {
            if (width > height) {
                inSampleSize = Math.round((float) height / (float) reqHeight);
            } else {
                inSampleSize = Math.round((float) width / (float) reqWidth);
            }
        }

        return inSampleSize;
    }
}