A short question regarding the ColorFilter() function; I am trying to replace an specific color of an Image with an new color:
Default: result:
So in this example I just want to replace the red color with the blue color. But don't modify the black color of this image.
At the moment Iam using the following code:
int color = Color.parseColor("#0000FF");
iv1.setColorFilter(color, PorterDuff.Mode.SRC_ATOP);
From the description of the "PorterDuff" Mode I should use "SRV_ATOP". But how should I use this mode so that only the red color will be replaced?
I've now found a way which works perfectly. So for everyone who faces the same probleme...here is the code which works for me:
//Decode *.png file to Bitmap
Bitmap Bitmap_temp = BitmapFactory.decodeResource(getResources(), R.drawable.image_1);
Bitmap Bitmap_final = Bitmap_temp.copy(android.graphics.Bitmap.Config.ARGB_8888, true);
//Get Pixel and change color if pixel color match
int [] allpixels = new int [Bitmap_final.getHeight() * Bitmap_final.getWidth()];
Bitmap_final.getPixels(allpixels, 0, Bitmap_final.getWidth(), 0, 0, Bitmap_final.getWidth(), Bitmap_final.getHeight());
for(int i = 0; i < allpixels.length; i++)
{
if(allpixels[i] == Color.parseColor("#fff000"))
{
allpixels[i] = Color.parseColor("#0D0D0D");
}
}
Bitmap_final.setPixels(allpixels,0,Bitmap_final.getWidth(),0, 0, Bitmap_final.getWidth(),Bitmap_final.getHeight());
//Set Bitmap to ImageView
iv_image1.setImageBitmap(Bitmap_final);