Android Bitmap Load decodeBitmap(Resources res, int resId, int reqWidth, int reqHeight)

Description

decode Bitmap

Declaration

public static Bitmap decodeBitmap(Resources res, int resId,
            int reqWidth, int reqHeight) 

Method Source Code

//package com.java2s;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;

public class Main {
    public static Bitmap decodeBitmap(Resources res, int resId) {
        return BitmapFactory.decodeResource(res, resId);
    }/*from   w  ww . ja v a2  s . c om*/

    public static Bitmap decodeBitmap(Resources res, int resId,
            int reqWidth, int reqHeight) {

        final BitmapFactory.Options options = new BitmapFactory.Options();
        options.inJustDecodeBounds = true;
        BitmapFactory.decodeResource(res, resId, options);

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

        options.inJustDecodeBounds = false;
        return BitmapFactory.decodeResource(res, resId, 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) {

            final int heightRatio = Math.round((float) height
                    / (float) reqHeight);
            final int widthRatio = Math.round((float) width
                    / (float) reqWidth);

            inSampleSize = heightRatio < widthRatio ? heightRatio
                    : widthRatio;
        }

        return inSampleSize;
    }
}

Related

1. GetBitmap(String imageUrl)
2. base642Bitmap(String string)
3. decodeBitmap(Resources res, int resId)
4. decodeFromFile(String path)
5. decodeFromFile(String path, int reqWidth, int reqHeight)
6. decodeSampledBitmapFileForSize(File f, int reqWidth, int reqHeight)
7. decodeSampledBitmapFromBytes(byte[] res, int reqWidth, int reqHeight)