Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Open Source License 

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;

public class Main {
    public static Bitmap getSampledBitmap(Context context, String imagePath, boolean isDefault, int reqWidth,
            int reqHeight) {
        Bitmap sampledBitmap = null;
        InputStream inputStream = null;
        try {
            if (isDefault) {
                inputStream = context.getAssets().open(imagePath);
            } else {
                inputStream = new FileInputStream(imagePath);
            }
            BitmapFactory.Options options = new BitmapFactory.Options();
            options.inJustDecodeBounds = true;
            BitmapFactory.decodeStream(inputStream, null, options);
            options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);
            options.inJustDecodeBounds = false;
            if (!isDefault) {
                inputStream.close();
                inputStream = new FileInputStream(imagePath);
            }
            sampledBitmap = BitmapFactory.decodeStream(inputStream, null, options);
            //            inputStream.close();

        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (inputStream != null) {
                try {
                    inputStream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return sampledBitmap;
    }

    private 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;
            while ((halfHeight / inSampleSize) > reqHeight && (halfWidth / inSampleSize) > reqWidth) {
                inSampleSize *= 2;
            }
        }
        return inSampleSize;
    }
}