Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;

public class Main {
    public static Bitmap loadImageFromStorage(String path) {
        Bitmap bmp = null;
        try {
            File f = new File(path);

            final BitmapFactory.Options options = new BitmapFactory.Options();
            options.inJustDecodeBounds = true;
            //BitmapFactory.decodeResource(res, resId, options);
            BitmapFactory.decodeStream(new FileInputStream(f), null, options);

            // Calculate inSampleSize
            options.inSampleSize = calculateInSampleSize(options, 200, 200);

            // Decode bitmap with inSampleSize set
            options.inJustDecodeBounds = false;
            bmp = BitmapFactory.decodeStream(new FileInputStream(f), null, options);
            //BitmapFactory.decodeS
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
        return bmp;

    }

    public static int calculateInSampleSize(BitmapFactory.Options options, int reqWidth, int reqHeight) {
        // Raw height and width of image
        final int height = options.outHeight;
        final int width = options.outWidth;
        int inSampleSize = 1;

        if (height > reqHeight || width > reqWidth) {

            final int halfHeight = height / 2;
            final int halfWidth = width / 2;

            // Calculate the largest inSampleSize value that is a power of 2 and keeps both
            // height and width larger than the requested height and width.
            while ((halfHeight / inSampleSize) > reqHeight && (halfWidth / inSampleSize) > reqWidth) {
                inSampleSize *= 2;
            }
        }

        return inSampleSize;
    }
}