android手機流量資訊系統是LINUX核心 記錄在/proc/self/net/dev檔案裡面

我們可以看看dev檔案的格式

Microsoft Windows XP [版本 5.1.2600]

 (C) 版權所有 1985-2001 Microsoft Corp.

D:/Program Files/Java/sdk/android-sdk-windows/tools>adb shell

# cd proc

cd proc

# cd net

cd net

# cat dev

cat dev

Inter-| Receive | Transmit face |bytes packets errs drop fifo frame compressed multicast|bytes packe ts errs drop fifo colls carrier compressed

lo: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

eth0: 7069733 86239 0 0 0 0 0 0 12512463 741 79 0 0 0 0 0 0

tunl0: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

gre0: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 #

我們要獲取流量可以通過這個檔案進行讀取

我讀取的原始碼如下

import java.io.BufferedReader; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.FileReader; import java.io.IOException; import java.util.Calendar; import org.apache.http.util.EncodingUtils; import android.app.Service; import android.content.Intent; import android.os.Handler; import android.os.IBinder; import android.widget.Toast; /*  */ public class mService1 extends Service { private Handler objHandler = new Handler(); private int intCounter = 0; private int mHour; private int mMinute; private int mYear; private int mMonth; private int mDay; private String mdate; final public String DEV_FILE = "/proc/self/net/dev";// 系統流量檔案 String[] ethdata = { "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0" }; String[] gprsdata = { "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0" }; String[] wifidata = { "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0", "0" }; String data = "0,0,0,0,0,0,0,0,0,0,0,0";// 對應on.txt裡面的格式 final String ETHLINE = " eth0";// eth是乙太網資訊 tiwlan0 是 Wifi rmnet0 是 GPRS final String GPRSLINE = "rmnet0"; //轉載時此處為tiwlan0， 但發現在我的2.1的手機上為wlan0 final String WIFILINE = " wlan0"; final String TEXT_ENCODING = "UTF-8"; final public String ONPATH = "/data/data/zy.dnh/on.txt"; final public String LOGPATH = "/data/data/zy.dnh/log.txt"; private Runnable mTasks = new Runnable() { public void run()// 執行該服務執行此函式 { refresh(); intCounter++; // DisplayToast("Counter:"+Integer.toString(intCounter)); objHandler.postDelayed(mTasks, 3000);// 每3000毫秒執行一次 } }; @Override public void onStart(Intent intent, int startId) { // TODO Auto-generated method stub objHandler.postDelayed(mTasks, 0); super.onStart(intent, startId); } @Override public void onCreate() { // TODO Auto-generated method stub super.onCreate(); } @Override public IBinder onBind(Intent intent) { // TODO Auto-generated method stub return null; } @Override public void onDestroy() { // TODO Auto-generated method stub /* */ objHandler.removeCallbacks(mTasks); super.onDestroy(); } public void DisplayToast(String str) { Toast.makeText(this, str, Toast.LENGTH_SHORT).show(); } public void readdev() { FileReader fstream = null; try { fstream = new FileReader(DEV_FILE); } catch (FileNotFoundException e) { DisplayToast("Could not read " + DEV_FILE); } BufferedReader in = new BufferedReader(fstream, 500); String line; String[] segs; String[] netdata; int count = 0; int k; int j; try { while ((line = in.readLine()) != null) { segs = line.trim().split(":"); if (line.startsWith(ETHLINE)) { netdata = segs[1].trim().split(" "); for (k = 0, j = 0; k < netdata.length; k++) { if (netdata[k].length() > 0) { ethdata[j] = netdata[k]; j++; } } } else if (line.startsWith(GPRSLINE)) { netdata = segs[1].trim().split(" "); for (k = 0, j = 0; k < netdata.length; k++) { if (netdata[k].length() > 0) { gprsdata[j] = netdata[k]; j++; } } } else if (line.startsWith(WIFILINE)) { netdata = segs[1].trim().split(" "); for (k = 0, j = 0; k < netdata.length; k++) { if (netdata[k].length() > 0) { wifidata[j] = netdata[k]; j++; } } } count++; } fstream.close(); } catch (IOException e) { DisplayToast(e.toString()); } } public String getinfo(String path) { File file; String str = ""; FileInputStream in; try { // 開啟檔案file的InputStream file = new File(path); in = new FileInputStream(file); // 將檔案內容全部讀入到byte陣列 int length = (int) file.length(); byte[] temp = new byte[length]; in.read(temp, 0, length); // 將byte陣列用UTF-8編碼並存入display字串中 str = EncodingUtils.getString(temp, TEXT_ENCODING); // 關閉檔案file的InputStream in.close(); } catch (IOException e) { DisplayToast(e.toString()); } return str; } public void writefile(String str, String path) { File file; FileOutputStream out; try { // 建立檔案 file = new File(path); file.createNewFile(); // 開啟檔案file的OutputStream out = new FileOutputStream(file); String infoToWrite = str; // 將字串轉換成byte陣列寫入檔案 out.write(infoToWrite.getBytes()); // 關閉檔案file的OutputStream out.close(); } catch (IOException e) { // 將出錯資訊列印到Logcat DisplayToast(e.toString()); } } public void refresh() { readdev();// 讀取本次開機之後直到當前系統的總流量 data = ethdata[0] + "," + ethdata[1] + "," + ethdata[8] + "," + ethdata[9] + "," + gprsdata[0] + "," + gprsdata[1] + "," + gprsdata[8] + "," + gprsdata[9] + "," + wifidata[0] + "," + wifidata[1] + "," + wifidata[8] + "," + wifidata[9]; String onstr = getinfo(ONPATH);// 讀取on.txt記錄到onstr裡 String ondata[] = onstr.split(",");// 將onstr各項分離 放到ondata裡 // 計算增量 int[] delta = new int[12]; delta[0] = Integer.parseInt(ethdata[0]) - Integer.parseInt(ondata[0]); delta[1] = Integer.parseInt(ethdata[1]) - Integer.parseInt(ondata[1]); delta[2] = Integer.parseInt(ethdata[8]) - Integer.parseInt(ondata[2]); delta[3] = Integer.parseInt(ethdata[9]) - Integer.parseInt(ondata[3]); delta[4] = Integer.parseInt(gprsdata[0]) - Integer.parseInt(ondata[4]); delta[5] = Integer.parseInt(gprsdata[1]) - Integer.parseInt(ondata[5]); delta[6] = Integer.parseInt(gprsdata[8]) - Integer.parseInt(ondata[6]); delta[7] = Integer.parseInt(gprsdata[9]) - Integer.parseInt(ondata[7]); delta[8] = Integer.parseInt(wifidata[0]) - Integer.parseInt(ondata[8]); delta[9] = Integer.parseInt(wifidata[1]) - Integer.parseInt(ondata[9]); delta[10] = Integer.parseInt(wifidata[8])- Integer.parseInt(ondata[10]); delta[11] = Integer.parseInt(wifidata[9])- Integer.parseInt(ondata[11]); // 讀取log.txt // 獲取當前時間 final Calendar c = Calendar.getInstance(); mYear = c.get(Calendar.YEAR); // 獲取當前年份 mMonth = c.get(Calendar.MONTH) + 1;// 獲取當前月份 mDay = c.get(Calendar.DAY_OF_MONTH);// 獲取當前月份的日期號碼 mHour = c.get(Calendar.HOUR_OF_DAY);// 獲取當前的小時數 mMinute = c.get(Calendar.MINUTE);// 獲取當前的分鐘數 mdate = mYear + "-" + mMonth + "-" + mDay; String text = getinfo(LOGPATH);// 將log.txt的內容讀到text字串中 String[] line = text.split("/n"); String today = line[line.length - 1];// 獲得今日已記錄流量 String[] beToday = today.split(","); // 檢查檔案最後一行是否為今天的流量記錄資訊 if (!beToday[0].equals(mdate))// 如果檔案只有一行，表明目前日誌為空，將當前日期加入 // 判斷今日流量是否已經記錄,如果今日流量沒有記錄 { text = text + mdate + ",0,0,0,0,0,0,0,0,0,0,0,0/n"; writefile(text, LOGPATH); line = text.split("/n"); today = line[line.length - 1];// 獲得今日已記錄流量 beToday = today.split(","); } int i; // 處理今日流量 int[] newTodaydata = new int[12];// 表示今日流量 String newtoday = mdate; for (i = 0; i <= 11; i++) { newTodaydata[i] = Integer.parseInt(beToday[i + 1]) + delta[i]; newtoday = newtoday + "," + newTodaydata[i]; } newtoday = newtoday + "/n"; String[] beTotal = line[0].split(","); int[] newTotaldata = new int[12];// 表示總流量數值 // 更新第一行 String newtotal = "total"; for (i = 0; i <= 11; i++) { newTotaldata[i] = Integer.parseInt(beTotal[i + 1]) + delta[i];// 總流量數值+delta[i]更新 newtotal = newtotal + "," + newTotaldata[i]; } newtotal = newtotal + "/n"; // 處理中間不變的部分 String before = "";// before為之前的從第1行到昨天的流量記錄 for (i = 1; i <= line.length - 2; i++) before = before + line[i] + "/n";// 代表中間不變的部分 String newlog = newtotal + before + newtoday; writefile(data, ONPATH);// 更新流量記錄 writefile(newlog, LOGPATH);// 更新log*/ } }