How to create image's color picker app.
Can you give an extension.
What do you mean? Do you want to return all the colours in an image, or a single colour from a particular position in the image?
Single color from a particular place
Do you mean get the color code or HEX from an uploaded image?
Set the image to a canvas background, then a touch can return the pixel colour, alternatively enter x/y coordinates to return the pixel colour.