Load image without autoscaling in Android

问题

I'm trying to create a map for a game through an image, where each black pixel is equivalent to a wall, and yellow to flowers(1) and green grass(0) so far i had this image (50x50): http://i.imgur.com/Ydj9Cp2.png

the problem here seems to be that, when i read the image on my code, it get's scaled up to 100x100, even tough i have it on the raw folder. I can't let it scale up or down because that will put noise and blur on the image and then the map won't be readable.

here i have my code:

(...)
Bitmap tab=BitmapFactory.decodeResource(resources, com.example.lolitos2.R.raw.mappixel);
    //tab=Bitmap.createScaledBitmap(tab, 50, 50, false);
    Log.e("w", tab.getWidth()+"."+tab.getHeight());
    for (int i = 0; i < tab.getWidth(); i++) {
        for (int j = 0; j < tab.getHeight(); j++) {
            int x = j;
            int y = i;
            switch (tab.getPixel(x, y)) {
            // se o é uma parede
            case Color.BLACK:
                getParedes()[x][y] = new Parede(x, y);
                break;
            case Color.GREEN:
                fundo.add(new Passivo(x,y,0));
                break;
            default:
                fundo.add(new Passivo(x,y,1));
            }

        }
    }

How can i read my image Map without rescaling it?

回答1:

Put them in the drawable-nodpi folder, instead of in raw, then just read them as any other BitmapDrawable.

If you have some drawable resources that the system should never scale (perhaps because you perform some adjustments to the image yourself at runtime), you should place them in a directory with the nodpi configuration qualifier. Resources with this qualifier are considered density-agnostic and the system will not scale them.

(From http://developer.android.com/guide/practices/screens_support.html)

(If necessary, there are other ways, e.g. you can provide an inDensity parameter to the options of BitmapFactory.decodeResource).