How to decrease black colour for ColorMatrix.

[moonandroid]

Hello,
I have used this code snippet,how i can reduce black color over here.

 ColorMatrix colorMatrix = new ColorMatrix();
        colorMatrix.setSaturation(0);
        float brightness = (float)(bar.getProgress());//it can be 0-128
        float m = 205f;
        float t = -255*brightness;
        ColorMatrix threshold = new ColorMatrix(new float[] {
                m, 1, 0, 1, t,
                0, m, 1, 1, t,
                1, 0, m, 1, t,
                0, 1, 0, 1, 0
        });

After above implementation image become too black.

[chiuki]

Please ask questions like this on StackOverflow.