Question

I am displaying a tiny png drawable resource in an ImageView of larger dimensions than the original image. This is normal and what I want by the way 🙂

When the ImageView is displayed, the image is blurry, because of the scaling method used I suppose.

I would like to achieve an effect similar to :
http://www.41post.com/4241/programming/android-disabling-anti-aliasing-for-pixel-art
where the original image is upscaled without antialiasing.

Is there a way to achieve that directly with an ImageView of certain width and height (in dips) and a drawable, without having to use an intermediate Bitmap?

Answer 1

<?xml version="1.0" encoding="utf-8"?>
<bitmap
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:src="@drawable/image"
    android:antialias="false" />

You need to create an drawable, copy the code above on an xml in the drawable folder, then on your layout instead of using your image as source use this xml. This way you disable the antialias for the image.

Edit: doing this in code.

BitmapDrawable draw = new BitmapDrawable(R.drawable.image);
draw.setAntiAlias(false);
imageView.setImageDrawable(draw);