alexfu

public class ColorUtils {
  private static final double LM_RED_COEFFICIENT = 0.2126;
  private static final double LM_GREEN_COEFFICIENT = 0.7152;
  private static final double LM_BLUE_COEFFICIENT = 0.0722;

  public static int calculateRelativeLuminance(int color) {
    int red = (int) (Color.red(color) * LM_RED_COEFFICIENT);
    int green = (int) (Color.green(color) * LM_GREEN_COEFFICIENT);
    int blue = (int) (Color.blue(color) * LM_BLUE_COEFFICIENT);
    return red + green + blue;

romannurik

/*
 * Copyright 2014 Google Inc.
 *
 * 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

iainconnor

# Built application files
/*/build/

# Crashlytics configuations
com_crashlytics_export_strings.xml

# Local configuration file (sdk path, etc)
local.properties

# Gradle generated files

keyboardr

import android.support.v4.app.Fragment;

public class FragmentUtils {

  /**
   * @param fragment
   *            The Fragment whose parent is to be found
   * @param parentClass
   *            The interface that the parent should implement
   * @return The parent of fragment that implements parentClass,

romannurik

/*
 * Copyright 2012 Google Inc.
 *
 * 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