【Android】获取手机的相关硬件信息

今天在QQ群里聊天,一个哥们在某宝买到了一个运行内存16G的手机,当时我就吓尿了,所以有了写个程序把这个手机的实际内存读出来的想法,于是就有了今天这篇博客.

所有的信息项如下图所示.(由于我的测试机没有插手机卡,所以有的信息会显示为空)

以下就是代码:

package com.liu.chad.practicesqlite;

import android.app.ActivityManager;
import android.content.Context;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.telephony.TelephonyManager;
import android.text.format.Formatter;
import android.util.Log;
import android.widget.TextView;

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;

public class MainActivity extends ActionBarActivity {

    private TextView mTextView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mTextView = (TextView) findViewById(R.id.textViewId);
        getPhoneInfo();
    }

    /**
     * 获取手机信息
     */
    public void getPhoneInfo() {
        TelephonyManager tm = (TelephonyManager) this.getSystemService(TELEPHONY_SERVICE);
        String mtyb = android.os.Build.BRAND;// 手机品牌
        String mtype = android.os.Build.MODEL; // 手机型号
        String imei = tm.getDeviceId();
        String imsi = tm.getSubscriberId();
        String numer = tm.getLine1Number(); // 手机号码
        String serviceName = tm.getSimOperatorName(); // 运营商
        mTextView.setText("品牌: " + mtyb + "\n" + "型号: " + mtype + "\n" + "版本: Android "
                + android.os.Build.VERSION.RELEASE + "\n" + "IMEI: " + imei
                + "\n" + "IMSI: " + imsi + "\n" + "手机号码: " + numer + "\n"
                + "运营商: " + serviceName + "\n");
        mTextView.append("总内存: " + getTotalMemory() + "\n");
        mTextView.append("当前可用内存: " + getAvailMemory() + "\n");
        mTextView.append("CPU名字: " + getCpuName() + "\n");
        mTextView.append("CPU最大频率: " + getMaxCpuFreq() + "\n");
        mTextView.append("CPU最小频率: " + getMinCpuFreq() + "\n");
        mTextView.append("CPU当前频率: " + getCurCpuFreq() + "\n");
    }

    /**
     * 获取手机内存大小
     *
     * @return
     */
    private String getTotalMemory() {
        String str1 = "/proc/meminfo";// 系统内存信息文件
        String str2;
        String[] arrayOfString;
        long initial_memory = 0;
        try {
            FileReader localFileReader = new FileReader(str1);
            BufferedReader localBufferedReader = new BufferedReader(localFileReader, 8192);
            str2 = localBufferedReader.readLine();// 读取meminfo第一行，系统总内存大小

            arrayOfString = str2.split("\\s+");
            for (String num : arrayOfString) {
                Log.i(str2, num + "\t");
            }

            initial_memory = Integer.valueOf(arrayOfString[1]).intValue() * 1024;// 获得系统总内存，单位是KB，乘以1024转换为Byte
            localBufferedReader.close();

        } catch (IOException e) {
        }
        return Formatter.formatFileSize(getBaseContext(), initial_memory);// Byte转换为KB或者MB，内存大小规格化
    }

    /**
     * 获取当前可用内存大小
     *
     * @return
     */
    private String getAvailMemory() {
        ActivityManager am = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
        ActivityManager.MemoryInfo mi = new ActivityManager.MemoryInfo();
        am.getMemoryInfo(mi);
        return Formatter.formatFileSize(getBaseContext(), mi.availMem);
    }

    public static String getMaxCpuFreq() {
        String result = "";
        ProcessBuilder cmd;
        try {
            String[] args = {"/system/bin/cat",
                    "/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq"};
            cmd = new ProcessBuilder(args);
            Process process = cmd.start();
            InputStream in = process.getInputStream();
            byte[] re = new byte[24];
            while (in.read(re) != -1) {
                result = result + new String(re);
            }
            in.close();
        } catch (IOException ex) {
            ex.printStackTrace();
            result = "N/A";
        }
        return result.trim() + "Hz";
    }

    // 获取CPU最小频率（单位KHZ）

    public static String getMinCpuFreq() {
        String result = "";
        ProcessBuilder cmd;
        try {
            String[] args = {"/system/bin/cat",
                    "/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq"};
            cmd = new ProcessBuilder(args);
            Process process = cmd.start();
            InputStream in = process.getInputStream();
            byte[] re = new byte[24];
            while (in.read(re) != -1) {
                result = result + new String(re);
            }
            in.close();
        } catch (IOException ex) {
            ex.printStackTrace();
            result = "N/A";
        }
        return result.trim() + "Hz";
    }

    // 实时获取CPU当前频率（单位KHZ）

    public static String getCurCpuFreq() {
        String result = "N/A";
        try {
            FileReader fr = new FileReader(
                    "/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq");
            BufferedReader br = new BufferedReader(fr);
            String text = br.readLine();
            result = text.trim() + "Hz";
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return result;
    }

    public static String getCpuName() {
        try {
            FileReader fr = new FileReader("/proc/cpuinfo");
            BufferedReader br = new BufferedReader(fr);
            String text = br.readLine();
            String[] array = text.split(":\\s+", 2);
            for (int i = 0; i < array.length; i++) {
            }
            return array[1];
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return null;
    }
}