Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * MIT License
 *
 * Copyright (c) 2016 Aldrin Clemente
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

import android.content.Context;

import android.content.pm.PackageManager;

public class Main {
    /**
     * Returns the version name of the app with the specified package name
     *
     * @param context
     * @return The version name of the app or <b>null</b> if it fails
     */
    public static String getVersionName(Context context, String packageName) {
        try {
            return context.getPackageManager().getPackageInfo(packageName, 0).versionName;
        } catch (PackageManager.NameNotFoundException e) {
            return null;
        }
    }

    /**
     * Returns the version name of the calling app
     *
     * @param context
     * @return The version name of the app or <b>null</b> if it fails
     */
    public static String getVersionName(Context context) {
        return getVersionName(context, context.getPackageName());
    }
}