get Text Color from background color - Android Graphics

Android examples for Graphics:Background Color

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  4. Background Color

Description

get Text Color from background color

Demo Code


//package com.java2s;
import android.graphics.Color;

public class Main {
    public static Integer getTextColor(Integer backgroundColor) {
        int[] rgb = { Color.red(backgroundColor),
                Color.green(backgroundColor), Color.blue(backgroundColor) };

        int brightness = (int) Math.sqrt(rgb[0] * rgb[0] * .241 + rgb[1]
                * rgb[1] * .691 + rgb[2] * rgb[2] * .068);

        if (brightness >= 220) {
            return 0xFF000000;
        }/* ww w.  ja v  a2s.  com*/

        return 0xFFFFFFFF;
    }
}

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