Main.java Source code

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Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Tencent is pleased to support the open source community by making
 * Tencent GT (Version 2.4 and subsequent versions) available.
 *
 * Notwithstanding anything to the contrary herein, any previous version
 * of Tencent GT shall not be subject to the license hereunder.
 * All right, title, and interest, including all intellectual property rights,
 * in and to the previous version of Tencent GT (including any and all copies thereof)
 * shall be owned and retained by Tencent and subject to the license under the
 * Tencent GT End User License Agreement (http://gt.qq.com/wp-content/EULA_EN.html).
 * 
 * Copyright (C) 2015 THL A29 Limited, a Tencent company. All rights reserved.
 * 
 * Licensed under the MIT License (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of the License at
 * 
 * http://opensource.org/licenses/MIT
 * 
 * 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 java.lang.reflect.Method;

public class Main {

    public static long[] getMemInfo() {
        long memInfo[] = new long[4];
        try {
            Class<?> procClazz = Class.forName("android.os.Process");
            Class<?> paramTypes[] = new Class[] { String.class, String[].class, long[].class };
            Method readProclines = procClazz.getMethod("readProcLines", paramTypes);
            Object args[] = new Object[3];
            final String[] memInfoFields = new String[] { "MemTotal:", "MemFree:", "Buffers:", "Cached:" };
            long[] memInfoSizes = new long[memInfoFields.length];
            memInfoSizes[0] = 30;
            memInfoSizes[1] = -30;
            args[0] = new String("/proc/meminfo");
            args[1] = memInfoFields;
            args[2] = memInfoSizes;
            if (null != readProclines) {
                readProclines.invoke(null, args);
                for (int i = 0; i < memInfoSizes.length; i++) {
                    memInfo[i] = memInfoSizes[i] / 1024;
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }

        return memInfo;
    }
}