How to get the main color of an Imageview?

Question

I wanted to know without having to post my code, how to get the main color of a certain point within a ImageView, for example I have a frame and within that frame has 3 colors, the color on the right is red, the color on the left is blue, and the middle color is black, but I just want to get the middle color without having to return that the color on the left or right is blue/red. How do I do that? If anyone could help me I’d be very grateful.

Answer 1

To get the color of a given pixel of a Imageview use the method getPixel of Bitmap associated with Imageview.

Code to get center pixel color:

Bitmap bitmap=((BitmapDrawable)imageView.getDrawable()).getBitmap();
//Coordenada x do centro
int x = bitmap.getWidth()/2;
//Coordenada y do centro
int y = bitmap.getHeight()()/2;

int cor = bitmap.getPixel(x,y);

Please note that the coordinates(x,y) must refer to the Bitmap and not to Imageview.
To get the color of any pixel, if the coordinates(x,y) refer to the Imageview, they will have to be converted:

double bitmapWidth = bitmap.getWidth();
double bitmapHeight = bitmap.getHeight();
double imageViewWidth = imageView.getWidth();
double imageViewHeight = imageView.getHeigth();

int bitmapX = (int)(x * (bitmapWidth / imageViewWidht));
int bitmapY = (int)(y * (bitmapHeight / imageViewHeight));
int cor = bitmap.getPixel(bitmapX,bitmapY);