Read android mobile phone traffic information

The android mobile phone traffic information system is recorded in the/proc/self/net/dev file in the Linux kernel.
 
Let's take a look at the dev file format.
 
Microsoft Windows XP [version 5.1.2600]
(C) Copyright 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
Eth0: 7069733 86239 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
Gre0: 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0
#
 
 
We can read the traffic through this file.
The source code I read is as follows:
 
 
 
Package zy. dnh;
 
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"; // system traffic File
String [] ethdata = {"0", "0", "0", "0", "0", "0", "0", "0 ", "0", "0", "0", "0", "0", "0", "0 "};
String [] maid = {"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 "};
String data = "0, 0, 0, 0, 0, 0, 0, 0, 0"; // corresponds to the format in on.txt
Final String ETHLINE = "eth0"; // eth indicates Ethernet information. tiwlan0 indicates Wifi, rmnet0 indicates GPRS.
Final String maid = "rmnet0 ";
Final String WIFILINE = "tiwlan0 ";
Final String TEXT_ENCODING = "UTF-8 ";
 
Final public String ONPATH = "/data/zy. dnh/on.txt ";
Final public String LOGPATH = "/data/zy. dnh/log.txt ";
Private Runnable mTasks = new Runnable ()
{
 
Public void run () // run the service to execute this function
{
Refresh ();


IntCounter ++;
// DisplayToast ("Counter:" + Integer. toString (intCounter ));
ObjHandler. postDelayed (mTasks, 3000); // executed every 3000 milliseconds
}
};
 
@ 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 ("cocould 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 (uplsline ))
{

Netdata = segs [1]. trim (). split ("");
For (k = 0, j = 0; k <netdata. length; k ++)
{
If (netdata [k]. length ()> 0)
{
 
GPRS data [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 {
// Open the InputStream of the file
File = new File (path );
In = new FileInputStream (file );
// Read all the file content into the byte array
Int length = (int) file. length ();
Byte [] temp = new byte [length];
In. read (temp, 0, length );
// Encode the byte array with a UTF-8 and store it in the display string
Str = EncodingUtils. getString (temp, TEXT_ENCODING );
// Close the InputStream of the file
 
In. close ();
}
Catch (IOException e ){
 
DisplayToast (e. toString ());
 
}
Return str;
}
Public void writefile (String str, String path)
{
File file;
FileOutputStream out;
Try {
// Create a file
File = new File (path );
File. createNewFile ();
// Open the OutputStream of the file
Out = new FileOutputStream (file );
String infoToWrite = str;
// Convert the string into a byte array and write it to the file
Out. write (infoToWrite. getBytes ());
// Close the OutputStream of the file
Out. close ();
} Catch (IOException e ){
// Print error information to Logcat
DisplayToast (e. toString ());
 
}
 
}
 
Public void refresh ()
{
 
 
Readdev (); // read the total traffic from the current system after the current Boot
 
Data = ethdata [0] + "," + ethdata [1] + "," + ethdata [8] + "," + ethdata [9] + ","
+ Maid [0] + "," + maid [1] + "," + maid [8] + "," + maid [9] + ","
+ Wifidata [0] + "," + wifidata [1] + "," + wifidata [8] + "," + wifidata [9];
String onstr = getinfo (ONPATH); // read the on.txt record to onstr
String ondata [] = onstr. split (","); // separate onstr items and put them in ondata
// Computing Increment
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 (uplsdata [0])-Integer. parseInt (ondata [4]);
Delta [5] = Integer. parseInt (uplsdata [1])-Integer. parseInt (ondata [5]);
Delta [6] = Integer. parseInt (uplsdata [8])-Integer. parseInt (ondata [6]);
Delta [7] = Integer. parseInt (uplsdata [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]);
 
 
// Read log.txt
// Obtain the current time
Final Calendar c = Calendar. getInstance ();
MYear = c. get (Calendar. YEAR); // obtain the current YEAR
MMonth = c. get (Calendar. MONTH) + 1; // obtain the current MONTH
MDay = c. get (Calendar. DAY_OF_MONTH); // obtain the Date Number of the current month
MHour = c. get (Calendar. HOUR_OF_DAY); // obtain the current hour
MMinute = c. get (Calendar. MINUTE); // obtain the current number of minutes
Mdate = mYear + "-" + mMonth + "-" + mDay;
 
String text = getinfo (LOGPATH); // read the content of log.txt to the text String
String [] line = text. split ("/n ");
 
String today = line [line. length-1]; // obtain the recorded traffic today
String [] beToday = today. split (",");
// Check whether the last row of the file is the traffic record of today
If (! BeToday [0]. equals (mdate) // if the file contains only one row, the current log is empty and the current date is added
// Determine whether today's traffic has been recorded. If today's traffic is not recorded
{
 
Text = text + mdate + ", 0, 0, 0, 0, 0, 0, 0, 0, 0/n ";
Writefile (text, LOGPATH );
 
 
Line = text. split ("/n ");
Today = line [line. length-1]; // obtain the recorded traffic today
 
BeToday = today. split (",");
}
 
 
 
Int I;
 
// Process today's traffic
Int [] newTodaydata = new int [12]; // Today's traffic
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]; // The total traffic value.
// Update the first line
String newtotal = "total ";
For (I = 0; I <= 11; I ++)
{
NewTotaldata [I] = Integer. parseInt (beTotal [I + 1]) + delta [I]; // The total traffic value + delta [I] is updated.
Newtotal = newtotal + "," + newTotaldata [I];
}
Newtotal = newtotal + "/n ";
// Process the unchanged intermediate part
String before = ""; // before is the previous traffic record from 1st rows to yesterday
 
For (I = 1; I <= line. length-2; I ++)
Before = before + line [I] + "/n"; // represents the unchanged part in the middle.
 
String newlog = newtotal + before + newtoday;
 
 
 
Writefile (data, ONPATH); // update traffic records
Writefile (newlog, LOGPATH); // Update log */
 
 
 
}
 
 
}

Author "technical life"