I want to convert a Drawable into a GrayScale Drawable (the exact same
content but gray). BUt when I display both next to each other in a
GridView, the sizes are different...
I do this usig the following method:
public static Drawable createGrayScaleDrawable(Drawable drawable) {
Bitmap colorBitmap = ((BitmapDrawable) drawable).getBitmap();
// Bitmap.Config.RGB_8888 to preserve the alpha-channel
Bitmap grayscaleBitmap =
Bitmap.createBitmap(colorBitmap.getWidth(),
colorBitmap.getHeight(), Bitmap.Config.ARGB_8888);
Canvas c = new Canvas(grayscaleBitmap);
Paint p = new Paint();
ColorMatrix cm = new ColorMatrix();
cm.setSaturation(0);
ColorMatrixColorFilter filter = new ColorMatrixColorFilter(cm);
p.setColorFilter(filter);
c.drawBitmap(colorBitmap, 0, 0, p);
Drawable grayscaleDrawable = new
BitmapDrawable(grayscaleBitmap);
return grayscaleDrawable;
}
When I now display them both next to each other in a GridView. In the
GridView Adapter I create Buttons using the following code:
Button button = new Button(context, null,
R.style.DashboardButton);
button.setCompoundDrawablesWithIntrinsicBounds(null,
dashboardButton.getDrawable(), null, null); //either the gray or
original one
button.setText(dashboardButton.getText());
button.setOnClickListener(dashboardButton.getOnclickListener());
button.setGravity(Gravity.CENTER_HORIZONTAL);
Does anyone know why this is happening?
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