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, 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)

{

// 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 */

}

 

 

}

 

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