Android Bitmap Load decodeSampledBitmapFileForSize(File f, int reqWidth, int reqHeight)

Description

decode Sampled Bitmap File For Size

Declaration

public static Bitmap decodeSampledBitmapFileForSize(File f,
            int reqWidth, int reqHeight) 

Method Source Code

//package com.java2s;

import java.io.File;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

public class Main {
    public static Bitmap decodeSampledBitmapFileForSize(File f,
            int reqWidth, int reqHeight) {
        final BitmapFactory.Options options = new BitmapFactory.Options();
        options.inJustDecodeBounds = true;
        BitmapFactory.decodeFile(f.getPath(), options);

        options.inSampleSize = calculateInSampleSize(options, reqWidth,
                reqHeight);//  www.  j ava 2 s  .co m

        options.inJustDecodeBounds = false;

        return BitmapFactory.decodeFile(f.getPath(), options);
    }

    private static int calculateInSampleSize(BitmapFactory.Options options,
            int reqWidth, int reqHeight) {
        final int height = options.outHeight;
        final int width = options.outWidth;
        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;
    }
}

Related

1. base642Bitmap(String string)
2. decodeBitmap(Resources res, int resId)
3. decodeBitmap(Resources res, int resId, int reqWidth, int reqHeight)
4. decodeFromFile(String path)
5. decodeFromFile(String path, int reqWidth, int reqHeight)
6. decodeSampledBitmapFromBytes(byte[] res, int reqWidth, int reqHeight)
7. decodeSampledBitmapFromBytesForCurrentScreen( byte[] res, Context ctxt)
8. decodeSampledBitmapFromResource(Resources res, int resId, int reqWidth, int reqHeight)
9. decodeSampledBitmapFromUrl(URL url, int reqWidth, int reqHeight)