Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright (C) 2013 Android Open Source Project
 *
 * 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.view.View;

public class Main {
    /**
     * Sets an alpha value on the view.
     */
    public static void setAlphaOnViewBackground(View view, float alpha) {
        if (view != null) {
            view.setBackgroundColor((int) (clamp(alpha, 0.0f, 1.0f) * 255) << 24);
        }
    }

    /**
     * If the input value lies outside of the specified range, return the nearer
     * bound. Otherwise, return the input value, unchanged.
     */
    public static float clamp(float input, float lowerBound, float upperBound) {
        if (input < lowerBound) {
            return lowerBound;
        } else if (input > upperBound) {
            return upperBound;
        }
        return input;
    }
}