get New Color By Start End Color - Android Graphics

Android examples for Graphics:Create Color

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Description

get New Color By Start End Color

Demo Code


//package com.java2s;
import android.content.Context;

public class Main {
    public static int getNewColorByStartEndColor(Context context,
            float fraction, int startValue, int endValue) {
        return evaluate(fraction,
                context.getResources().getColor(startValue), context
                        .getResources().getColor(endValue));
    }/*from w w w . j  a va 2 s .c o  m*/

    public static int evaluate(float fraction, int startValue, int endValue) {
        int startA = (startValue >> 24) & 0xff;
        int startR = (startValue >> 16) & 0xff;
        int startG = (startValue >> 8) & 0xff;
        int startB = startValue & 0xff;

        int endA = (endValue >> 24) & 0xff;
        int endR = (endValue >> 16) & 0xff;
        int endG = (endValue >> 8) & 0xff;
        int endB = endValue & 0xff;

        return ((startA + (int) (fraction * (endA - startA))) << 24)
                | ((startR + (int) (fraction * (endR - startR))) << 16)
                | ((startG + (int) (fraction * (endG - startG))) << 8)
                | ((startB + (int) (fraction * (endB - startB))));
    }
}

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