Java tutorial
//package com.java2s; /* * Copyright (C) 2015 Daniel Nilsson * * 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; import java.util.regex.Pattern; public class Main { /** * Format for #RGB **/ private final static Pattern HEXADECIMAL_SHORT_FORMAT = Pattern.compile("^#([A-Fa-f0-9]{3})$"); /** * Parse the color code, and return the corresponding color-int. * If the string cannot be parsed, throws an IllegalArgumentException * exception. Supported formats are: * #RRGGBB * #AARRGGBB * #RGB * * @param colorCode color code to parse * @return color-int */ public static int parseColor(String colorCode) { if (HEXADECIMAL_SHORT_FORMAT.matcher(colorCode).matches()) { colorCode = String.format("#%c%c%c%c%c%c", colorCode.charAt(1), colorCode.charAt(1), colorCode.charAt(2), colorCode.charAt(2), colorCode.charAt(3), colorCode.charAt(3)); } return Color.parseColor(colorCode); } }