请教高手高手高高手一个问题！！！！！！！！

Question

请教通过USSD返回的字符串如何获取，非诚勿扰，谢谢。

Answer 1

package com.example.android.UssdMessage;import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Calendar;
import java.util.Date;
import java.text.ParseException;
import java.text.SimpleDateFormat;import android.util.Log;public class USSD {
        
        private static String startmsg="displayMMIComplete"; //start msg to look for 
        private static String endmsg="MMI code has finished running"; //stop msg 
        private static String trimmsg="- using text from MMI message: '"; //a msg to remove from the text
        
        private long before=3000; //delay (ms) before creation of the class before a msg (USDD) is valid (use timestamp)
        private long after=3000;  //delay (ms) after creation of the class that a msg (USDD) is valid (wait after ms) 
        
        private String msg=""; //the USSD message
        private boolean found=false;
        private long t=-1; //timestamp of the found log
        
        
        public USSD()
        {
                this(3000,3000);
        }
        
        //USSD in log : example 
        public USSD(long before_creation,long after_creation)
        {
                before=before_creation;
                after=after_creation;
                long timestamp=System.currentTimeMillis(); //creation of the class --> look for the USSD msg in the logs
                Log.d("USSDClass", "Class creation - timestamp: "+String.valueOf(timestamp));
                try { 
                        //sample code taken from alogcat ...
                         Process logcatProc = Runtime.getRuntime().exec("logcat -v time -b main PhoneUtils:D"); //get PhoneUtils debug log with time information
                         BufferedReader mReader = new BufferedReader(new InputStreamReader(logcatProc.getInputStream()), 1024);
                         String line="";                         
                         boolean tostop=false;                  
                         long stop=timestamp+after; //to stop the while after "after" ms 
                         while (((line = mReader.readLine()) != null)&&(System.currentTimeMillis()<stop)&&(tostop==false)) {
                                 if (line.length()>19) //the line should be at least with a length of a timestamp (19) !
                                 {
                                         if (line.contains(startmsg)) //check if it is a USSD msg
                                         {
                                                //log example : "12-10 20:36:39.321 D/PhoneUtils(  178): displayMMIComplete: state=COMPLETE"
                                                t=extracttimestamp(line); //extract the timestamp of thie msg
                                                Log.d("USSDClass", "Found line at timestamp : "+String.valueOf(t));
                                                if (t>=timestamp-before) found=true; //start of an USDD is found & is recent !
                                         }
                                         else if (found) {
                                                 //log example : "12-10 20:36:39.321 D/PhoneUtils(  178): displayMMIComplete: state=COMPLETE"
                                                 if (line.contains(endmsg)) tostop=true;
                                                 else {
                                                         //log example : "12-10 20:36:39.321 D/PhoneUtils(  178): - using text from MMI message: 'Your USSD message with one or several lines"
                                                         Log.d("USSDClass", "Line content : "+line);
                                                         String[] v=line.split("\\): "); //doesn't need log information --> split with "): " separator
                                                         if (v.length>1)        msg+=v[1].replace(trimmsg, "").trim()+"\n";                                                                                                      
                                                                 
                                                 }
                                         }
                                 }      
                         }
                } catch (IOException e) {
                        Log.d("USSDClass", "Exception:"+e.toString());                          
                }                                       
        }
        
        public boolean IsFound()
        {
                return found;
        }
        
        public String getMsg()
        {               
                return msg;     
        }
        
        //extract timestamp from a log line with format "MM-dd HH:mm:ss.ms Level/App:msg"  Example : 12-10 20:36:39.321
        //Note : known bug : happy new year check will not work !!!
        private long extracttimestamp(String line)
        {       
                long timestamp=-1; //default value if no timestamp is found
                String[] v=line.split(" ");             
                if (v.length>1) //check if there is space
                {
                        Calendar C=Calendar.getInstance();
                        int y=C.get(Calendar.YEAR);                 
                    String txt=v[0]+"-"+y+" "+v[1]; //transform in format "MM-dd-yyyy HH:mm:ss"  
                    SimpleDateFormat formatter = new SimpleDateFormat("MM-dd-yyyy HH:mm:ss");
                try {           
                        Date tmp=formatter.parse(txt);          
                        timestamp=tmp.getTime();
                        String[] ms=v[1].split("."); //get ms
                        if (ms.length>1) timestamp+=Integer.getInteger(ms[1]);
                        
                } catch (ParseException e)
                {
                        Log.d("USSDClass", "USDD.extractimestamp exception:"+e.toString());
                }                   
                }
                return timestamp;
                
        }           
           
}