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SriramBms / gist:911144
Created April 9, 2011 04:49
Code snippet to manipulate the brightness of an image in Android
// It's assumed this function is defined in a class extending 'ImageView'
void addEffectBrightness(){
float brightness = mBrightnessValue;
mCm = new ColorMatrix();
mCm.set(new float[] { 1, 0, 0, 0, brightness,
0, 1, 0, 0,brightness,
0, 0, 1, 0, brightness,
0, 0, 0, 1, 0 });
mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);