Here you can find the source of adjustTextColor(int color)
private static int adjustTextColor(int color)
//package com.java2s; /*/*from w w w. jav a 2s . c o m*/ * * * Copyright 2014 http://Bither.net * * * * Licensed under the Apache License, Version 2.0 (the "License"); * * you may not use this file except in compliance with the License. * * You may obtain a copy of the License at * * * * http://www.apache.org/licenses/LICENSE-2.0 * * * * Unless required by applicable law or agreed to in writing, software * * distributed under the License is distributed on an "AS IS" BASIS, * * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * * See the License for the specific language governing permissions and * * limitations under the License. * */ import android.graphics.Color; public class Main { private static final int MinBlackValue = 0; private static int adjustTextColor(int color) { if (Color.red(color) == Color.green(color) && Color.green(color) == Color.blue(color)) { int value = Color.red(color); if (value < MinBlackValue) { value = MinBlackValue; return Color.argb(Color.alpha(color), value, value, value); } } return color; } }