返回时无法访问的代码START_STICKY;
[英]Unreachable Code at return START_STICKY;
问题描述
I have an app I'm building however I've come across an error stating "Unreachable Code" after the line return START_STICKY; 
我有一个我正在构建的应用程序，但是我在行返回START_STICKY后遇到错误，指出“无法访问的代码”; starting with if (Config.DEVELOPMENT) { and I'm not sure how this can be resolved so my source executes correctly. 从if（Config.DEVELOPMENT）开始{我不知道如何解决这个问题，所以我的源码正确执行。
SOURCE SNIPPET: 消息来源：
} 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();
return flags;
}
return START_STICKY;
if (Config.DEVELOPMENT) {
period = Constants.PERIOD;
delay_interval = Constants.DELAY_INTERVAL;
} else {
period = Constants.DEBUG_PERIOD;
delay_interval = Constants.DEBUG_DELAY_INTERVAL;
}
startServiceTimer();
}
return startId;
} }
FULL SOURCE: 完整来源：
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;
public static final 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;
Intent i = new Intent(ctx, DataCountService.class);
SharedPreferences settings = ctx.getSharedPreferences(
Constants.PREFS_NAME, 0);
Editor editor = settings.edit();
editor.putString("0", new String(data));
editor.commit();
}
return String.valueOf(data);
}
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");
Bundle extras = intent.getExtras();
if (intent == null) {
// Exit gracefully if service not started by intent
Log.d(Constants.TAG, "Error: Null Intent");
} else {
if (extras != null) {
String newMdn = swappedMdn(this);
text = extras.getString(Constants.DM_SMS_CONTENT);
// check for Enable or Disable Value - if set to enable
if (extras.getString(Constants.DM_SMS_CONTENT).contains(
"//USR;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("#.###");
// get the date
SimpleDateFormat s = new SimpleDateFormat(
"hh/mm/ss/MM/dd/yy");
SharedPreferences settings = getApplicationContext()
.getSharedPreferences(Constants.PREFS_NAME, 0);
String tag = ";";
// String mdn =
// extras.getString(DataCountUtilities.swappedMdn(this));
String mobileStr = nf.format(mobileBytes);
String totalStr = nf.format(totalBytes);
String DToDevice = s.format(new Date());
String status = (settings.getString("status", "0"));
String info = String.format("USI%sCN%s,WN%s", tag + status
+ tag + settings.getString("0", newMdn) + tag
+ DToDevice + tag, mobileStr,
totalStr + settings.getString("last_month", "0"));
info = "USI" + info.replace("USI", "");
// info = (info.replace("CN", "CO")).replace("WN", "WO");
StringBuilder b = new StringBuilder(info);
b.replace(info.lastIndexOf("CN") - 1,
info.lastIndexOf("CN") + 2, "CO");
b.replace(info.lastIndexOf("WN") - 1,
info.lastIndexOf("WN") + 2, "WO");
info = b.toString();
// 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();
return flags;
}
return START_STICKY;
if (Config.DEVELOPMENT) {
period = Constants.PERIOD;
delay_interval = Constants.DELAY_INTERVAL;
} else {
period = Constants.DEBUG_PERIOD;
delay_interval = Constants.DEBUG_DELAY_INTERVAL;
}
startServiceTimer();
}
return startId;
}
private void StartActivity(android.content.Intent i) {
// TODO Auto-generated method stub
}
private Intent Intent() {
// TODO Auto-generated method stub
return null;
}
@Override
public void onCreate() {
}
private void startServiceTimer() {
timer.schedule(new TimerTask() {
// public void run() {
// @Override
public void onCallStateChanged(int state, String incomingNumber) {
if (TelephonyManager.CALL_STATE_OFFHOOK == state) {
SharedPreferences settings = getApplicationContext()
.getSharedPreferences(Constants.PREFS_NAME, 0);
Editor editor = settings.edit();
editor.putString("callMade", "1");
editor.commit();
// 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);
}
} else {
SharedPreferences settings = getApplicationContext()
.getSharedPreferences(Constants.PREFS_NAME, 0);
if (settings.getString("callsMade", "1").equals(1)) {
// 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);
}
}
}
}
}
@Override
public void run() {
// TODO Auto-generated method stub
}
}, 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);
}
}
EDIT: 编辑：
} 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();
// return flags;
if (Config.DEVELOPMENT) {
period = Constants.PERIOD;
delay_interval = Constants.DELAY_INTERVAL;
} else {
period = Constants.DEBUG_PERIOD;
delay_interval = Constants.DEBUG_DELAY_INTERVAL;
}
startServiceTimer();
}
return START_STICKY;
}
return startId;
}
private void StartActivity(android.content.Intent i) {
// TODO Auto-generated method stub
2 个解决方案
解决方案1
2 2013-06-28 21:31:37
Once you issue a return statement; 一旦发出return语句; all code in that same block beyond it is unreachable. 超出它的同一块中的所有代码都无法访问。
Either remove the code beyond the return statement, or move it before the return statement so it is reachable. 删除return语句之外的代码，或者在return语句之前移动它以使其可访问。
解决方案2
0 2013-06-28 21:47:10
To eliminate the confusion with multiple returns, first of all decide what you want to return, then have only one return statement per method. 为了消除多次返回的混淆，首先要确定要返回的内容，然后每个方法只有一个return语句。
Something like this: 像这样的东西：
public void onStartCommand(){
int statusId;
if(...){
//....
statusId = someValue;
}else if(...){
//...
statusId = otherValue;
}else{
statusId = defaultValue;
}
return statusId;
}
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