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import java.io.BufferedReader;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.IOException;import java.io.InputStreamReader;import android.content.Context;import android.text.format.Formatter;/** * 流量统计的业务类 * @author Administrator * */public class ConnectivityEngine {
       /**     * @return     *     接收的流量信息（格式化的如：33MB）      */    public static String getReceive(int uid,Context context){        String res = null;        //读取流量信息文件 /proc/uid_stat/uid/tcp_rcv        String path = "/proc/uid_stat/" + uid + "/tcp_rcv";        try {            BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream(path)));            String line = reader.readLine();            long size = Long.parseLong(line);            res = Formatter.formatFileSize(context, size);        } catch (FileNotFoundException e) {            // TODO Auto-generated catch block            e.printStackTrace();        } catch (IOException e) {            // TODO Auto-generated catch block            e.printStackTrace();        }        return res;    }    /**     * @return     *     发送的流量信息（格式化的如：33MB）      */    public static String getSend(int uid,Context context){        String res = null;        //读取流量信息文件 /proc/uid_stat/uid/tcp_snd        String path = "/proc/uid_stat/" + uid + "/tcp_snd";        try {            BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream(path)));            String line = reader.readLine();            long size = Long.parseLong(line);            res = Formatter.formatFileSize(context, size);        } catch (FileNotFoundException e) {            // TODO Auto-generated catch block            e.printStackTrace();        } catch (IOException e) {            // TODO Auto-generated catch block            e.printStackTrace();        }        return res;    }}

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