How to change Bitmap image color in android?

Question

I am developing an android application in which I set an image to imageview. Now programmatic I want to change the bitmap image color. Suppose my image have red color initially and now I need to change it to orange color. How can I do that? Please help.

Here is my code. I managed to change the opacity but I do not know how to change the color.

  @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        ImageView iv = (ImageView) findViewById(R.id.img);
        Drawable d = getResources().getDrawable(R.drawable.pic1);
        Bitmap mNewBitmap = ((BitmapDrawable)d).getBitmap();
        Bitmap nNewBitmap = adjustOpacity(mNewBitmap);
        iv.setImageBitmap(nNewBitmap);
    }

    private Bitmap adjustOpacity( Bitmap bitmap ) {
        int width = bitmap.getWidth();
        int height = bitmap.getHeight();
        Bitmap dest = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
        int[] pixels = new int[width * height];
        bitmap.getPixels(pixels, 0, width, 0, 0, width, height);
        dest.setPixels(pixels, 0, width, 0, 0, width, height);
        return dest;
    } 

Answer 1

I tried Josip's answer but wouldn't work for me, regardless of whether the offset parameter was 1 or 0 - the drawn bitmap just appeared in original colour.

However, this did work:

// You have to copy the bitmap as any bitmaps loaded as drawables are immutable
Bitmap bm = ImageLoader.getInstance().loadImageSync("drawable://" + drawableId, o)
            .copy(Bitmap.Config.ARGB_8888, true);

Paint paint = new Paint();
ColorFilter filter = new PorterDuffColorFilter(ContextCompat.getColor(this, R.color.COLOR_1_DARK), PorterDuff.Mode.SRC_IN);
paint.setColorFilter(filter);

Canvas canvas = new Canvas(bm);
canvas.drawBitmap(bm, 0, 0, paint);

Update 1

Whilst the above works well and is useful in a lot of cases, if you just want to change the main colour of an ImageView drawable, which the op did, you can just use:

imgView.setColorFilter(ContextCompat.getColor(this, R.color.COLOR_1_DARK));

If you need more flexibility or this doesn't give the desired effect, there's an overload that allows you to change the PorterDuff Mode until you get what you're after:

imgView.setColorFilter(ContextCompat.getColor(this, R.color.COLOR_1_DARK), PorterDuff.Mode.SRC_ATOP);

Update 2

Another good use case I've had for this lately is customizing the appearance of a Google map v2 marker icon. In order to use 2 graphics to allow (for example) small/large icons on a marker, but also a range of colours on those 2 graphics by changing the colour of them dynamically. In my case I was doing this inside a ClusterRenderer as the markers were also clustered, but this can be used with a regular map marker the same way:

@Override
protected void onBeforeClusterItemRendered(MyClusterItem item, MarkerOptions markerOptions) {
    try {
        int markerColor = item.getColor();

        Bitmap icon;

        if (item.isFeatured()) {
            // We must copy the bitmap or we get an exception "Immutable bitmap passed to Canvas constructor"
            icon = BitmapFactory.decodeResource(context.getResources(),
                    R.drawable.icon_marker_large).copy(Bitmap.Config.ARGB_8888, true);
        } else {
            // We must copy the bitmap or we get an exception "Immutable bitmap passed to Canvas constructor"
            icon = BitmapFactory.decodeResource(context.getResources(),
                    R.drawable.icon_marker_small).copy(Bitmap.Config.ARGB_8888, true);
        }

        Paint paint = new Paint();
        ColorFilter filter = new PorterDuffColorFilter(ContextCompat.getColor(context, markerColor), PorterDuff.Mode.SRC_IN);
        paint.setColorFilter(filter);

        Canvas canvas = new Canvas(icon);
        canvas.drawBitmap(icon, 0, 0, paint);

        markerOptions.icon(BitmapDescriptorFactory.fromBitmap(icon));
    } catch (Exception ex) {
        ex.printStackTrace();
    }
}