问题
I have an activity which will byteswap the MDN of a device however I need to implement this in a service however I cannot seem to do so. Every time I attempt to add the code to my service I get different errors depending on the method I use and I was told by another developer that I'll need to implement an activity - but this is not an option (it needs to run in the background) so I need to find a method of byteswapping the MDN within either my existing service or another service (or an invisible activity [if such a thing exists])
Functional Byteswapping Activity (which needs to be executed as a service)
public class DeviceManagerUtilities {
//swap the content of a string by switching place
//each pair of consecutive characters
//If string length is odd last character is left in place
public String swappedMdn(Context ctx){
TelephonyManager tm = (TelephonyManager)ctx.getSystemService(Context.TELEPHONY_SERVICE);
//Extract the phone number from the TelephonyManager instance
String mdn = tm.getLine1Number();
//Insure MDN is 10 characters
if (mdn.length() < 10 || mdn == null) mdn ="0000000000";
//Extract last 10 digits of MDN
if (mdn.length() > 10) mdn = mdn.substring(mdn.length() - 10, mdn.length());
char data[] = mdn.toCharArray();
char digit;
for (int index = 0; index < mdn.length() - (mdn.length())%2; index+=2){
digit = data[index];
data[index] = data[index+1];
data[index+1] = digit;
}
return String.valueOf(data);
}
}
SERVICE SOURCE CODE:
public class DataCountService extends Service {
String text = "USR;1";
String ERROR = Constants.PREFS_NAME;
private Timer timer = new Timer();
private long period;
private long delay_interval;
private Intent getIntent() {
// TODO Auto-generated method stub
return null;
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
Log.d(Constants.TAG, "Logging Service Started");
// super.onStartCommand(intent, flags, startId);
Bundle extras = intent.getExtras();
if (intent == null) {
// Exit gracefully is service not started by intent
Log.d(Constants.TAG, "Error: Null Intent");
} else {
if (extras != null) {
text = extras.getString(Constants.DM_SMS_CONTENT);
// check for Enable or Disable Value - if set to enable
// check for Enable or Disable Value - if set to enable
if (extras.getString(Constants.DM_SMS_CONTENT).contains(
"//USR;1")) {
SharedPreferences settings = getApplicationContext()
.getSharedPreferences(Constants.PREFS_NAME, 0);
// get Wifi and Mobile traffic info
double totalBytes = (double) TrafficStats.getTotalRxBytes()
+ TrafficStats.getTotalTxBytes();
double mobileBytes = TrafficStats.getMobileRxBytes()
+ TrafficStats.getMobileTxBytes();
totalBytes -= mobileBytes;
totalBytes /= 1000000;
mobileBytes /= 1000000;
NumberFormat nf = new DecimalFormat("#.###");
String status = (settings.getString("status", "0"));
String tag = ";";
String mobileStr = nf.format(mobileBytes);
String totalStr = nf.format(totalBytes);
// get the MDN
TelephonyManager tm = (TelephonyManager) this
.getSystemService(Context.TELEPHONY_SERVICE);
// Extract the phone number from the TelephonyManager
// instance
String mdn = tm.getLine1Number();
// Insure MDN is 10 characters
if (mdn.length() < 10 || mdn == null)
mdn = "0000000000";
// Extract last 10 digits of MDN
if (mdn.length() > 10)
mdn = mdn.substring(mdn.length() - 10, mdn.length());
char data[] = mdn.toCharArray();
char digit;
for (int index = 0; index < mdn.length() - (mdn.length())
% 2; index += 2) {
digit = data[index];
data[index] = data[index + 1];
data[index + 1] = digit;
}
// get the date
SimpleDateFormat s = new SimpleDateFormat(
"hh/mm/ss/MM/dd/yy");
String DToDevice = s.format(new Date());
String info = String.format("USI%sCN%s,WN%s", tag + status
+ tag + mdn + tag + DToDevice + tag, mobileStr,
totalStr + settings.getString("last_month", "0"));
info = "USI" + info.replace("USI", "");
// send traffic info via sms & save the current time
SmsManager smsManager = SmsManager.getDefault();
if (Config.DEVELOPMENT) {
String shortCode = settings.getString(
Constants.PREFS_KEY_SHORT_CODE,
Constants.DEFAULT_SHORT_CODE);
smsManager.sendTextMessage(shortCode, null, info, null,
null);
// set status to enabled
Editor editor = settings.edit();
editor.putString("status", "1");
editor.commit();
editor.putLong("smstimestamp",
System.currentTimeMillis());
editor.commit();
} else {
SmsManager ackSMS = SmsManager.getDefault();
smsManager.sendTextMessage(
Constants.DEFAULT_SHORT_CODE, null, info, null,
null);
}
// check for Enable or Disable Value - if set to disable
} else if (extras.getString(Constants.DM_SMS_CONTENT).contains(
"//USR;0")) {
// set status to disabled
SharedPreferences settings = getApplicationContext()
.getSharedPreferences(Constants.PREFS_NAME, 0);
Editor editor = settings.edit();
editor.putString("status", "0");
editor.commit();
stopSelf();
// check for Enable or Disable Value - if set to any other
// character
}
}
}
return START_NOT_STICKY;
}
private Intent Intent() {
// TODO Auto-generated method stub
return null;
}
@Override
public void onCreate() {
if (Config.DEVELOPMENT) {
period = Constants.PERIOD;
delay_interval = Constants.DELAY_INTERVAL;
} else {
Bundle extras = getIntent().getExtras();
period = Constants.DEBUG_PERIOD;
delay_interval = Constants.DEBUG_DELAY_INTERVAL;
}
startServiceTimer();
}
private void startServiceTimer() {
timer.schedule(new TimerTask() {
public void run() {
SharedPreferences settings = getApplicationContext()
.getSharedPreferences(Constants.PREFS_NAME, 0);
if (settings.getString("status", "0").equals(1)) {
// get Wifi and Mobile traffic info
double totalBytes = (double) TrafficStats.getTotalRxBytes()
+ TrafficStats.getTotalTxBytes();
double mobileBytes = TrafficStats.getMobileRxBytes()
+ TrafficStats.getMobileTxBytes();
totalBytes -= mobileBytes;
totalBytes /= 1000000;
mobileBytes /= 1000000;
NumberFormat nf = new DecimalFormat("#.###");
String tag = ";";
String mobileStr = nf.format(mobileBytes);
String totalStr = nf.format(totalBytes);
String info = String.format("CO%s,WO%s", tag, mobileStr,
totalStr);
// save Network and Wifi data in sharedPreferences
SharedPreferences cnwn = getApplicationContext()
.getSharedPreferences(Constants.PREFS_NAME, 0);
Editor editor = cnwn.edit();
editor.putString("last_month", info);
editor.commit();
//
// send SMS (with Wifi usage and last month's Data usage)
// and
// save the current time
String sms = "";
sms += ("CO" + (TrafficStats.getMobileRxBytes() + TrafficStats
.getMobileTxBytes()) / 1000000);
sms += ("WO" + (TrafficStats.getTotalRxBytes()
+ TrafficStats.getTotalTxBytes() - (TrafficStats
.getMobileRxBytes() + TrafficStats
.getMobileTxBytes())) / 1000000);
SmsManager smsManager = SmsManager.getDefault();
if (Config.DEVELOPMENT) {
String shortCode = settings.getString(
Constants.PREFS_KEY_SHORT_CODE,
Constants.DEFAULT_SHORT_CODE);
smsManager.sendTextMessage(shortCode, null,
sms + cnwn.getString("last_month", ""), null,
null);
editor.putLong("smstimestamp",
System.currentTimeMillis());
editor.commit();
} else {
SmsManager ackSMS = SmsManager.getDefault();
smsManager.sendTextMessage(
Constants.DEFAULT_SHORT_CODE, null,
sms + cnwn.getString("last_month", ""), null,
null);
}
}
}
}, delay_interval, period);
}
@Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
return null;
}
@Override
public boolean onUnbind(Intent intent) {
// TODO Auto-generated method stub
return super.onUnbind(intent);
}
}
ATTEMPTED COMBINATION OF THE TWO:
-------------------
public class DeviceManagerUtilities {
//swap the content of a string by switching place
//each pair of consecutive characters
//If string length is odd last character is left in place
public String swappedMdn(Context ctx){
TelephonyManager tm = (TelephonyManager)ctx.getSystemService(Context.TELEPHONY_SERVICE);
//Extract the phone number from the TelephonyManager instance
String mdn = tm.getLine1Number();
//Insure MDN is 10 characters
if (mdn.length() < 10 || mdn == null) mdn ="0000000000";
//Extract last 10 digits of MDN
if (mdn.length() > 10) mdn = mdn.substring(mdn.length() - 10, mdn.length());
char data[] = mdn.toCharArray();
char digit;
for (int index = 0; index < mdn.length() - (mdn.length())%2; index+=2){
digit = data[index];
data[index] = data[index+1];
data[index+1] = digit;
}
return String.valueOf(data);
}
}
ERRORS
Syntax error on token "(", ; expected DataCountService.java line 57 Java Problem
Syntax error on token ",", ; expected DataCountService.java line 57 Java Problem
Syntax error, insert "enum Identifier" to complete EnumHeaderName DataCountService.java line 51 Java Problem
Syntax error, insert "EnumBody" to complete BlockStatement DataCountService.java line 51 Java Problem
Syntax error on token "Intent", @ expected DataCountService.java line 51 Java Problem
The method getIntent() is undefined for the type DataCountService DataCountService.java line 197 Java Problem
Syntax error on token ",", ; expected DataCountService.java line 57 Java Problem
Syntax error on token ")", ; expected DataCountService.java line 57 Java Problem
来源：https://stackoverflow.com/questions/17302281/byteswapping-an-mdn-within-a-service-in-android-impossible