javascript - How can I get the color from a pixel on the screen in React Native? -


i render photograph, , allow user select color touching on it. cannot find anyway retrieve painted pixels under touch event.

any help?

see example..

using ontouchlistener detect touch on imageview..

    @override     public boolean ontouch(view view, motionevent event) {          float eventx = event.getx();         float eventy = event.gety();         float[] eventxy = new float[]{eventx, eventy};          int x = integer.valueof((int) eventxy[0]);         int y = integer.valueof((int) eventxy[1]);          drawable imgdrawable = ((imageview) view).getdrawable();         bitmap bitmap = ((bitmapdrawable) imgdrawable).getbitmap();          //limit x, y range within bitmap         if (x < 0) {             x = 0;         } else if (x > bitmap.getwidth() - 1) {             x = bitmap.getwidth() - 1;         }          if (y < 0) {             y = 0;         } else if (y > bitmap.getheight() - 1) {             y = bitmap.getheight() - 1;         }          int touchedrgb = bitmap.getpixel(x, y);          int r = color.red(touchedrgb);         int b = color.blue(touchedrgb);         int g = color.green(touchedrgb);          string rr = integer.tostring(r);         string bb = integer.tostring(g);         string gg = integer.tostring(b);          string xyz = (rr+bb+gg);          colorrgb.settext("touched color: " + "#" + xyz);

here xyz rgb color code..


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