Dear all,
Good Morning,
I am writing an application to get the following details from the
Internet.
Time
Date
Day
>From an NTP server.
Which i am getting perfect.
In the AndroidManifest.xml file i have set the following properties
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.SET_TIME"/>
<uses-permission android:name="android.permission.WRITE_SETTINGS" />
<uses-permission
android:name="android.permission.WRITE_SECURE_SETTINGS" />
<uses-permission
android:name="android.permission.CHANGE_CONFIGURATION" />
<uses-permission
android:name="com.android.launcher.permission.READ_SETTINGS" />
<uses-permission
android:name="com.android.launcher.permission.WRITE_SETTINGS" />
The problem what i am facing is, i am not able to set the time to
the "SystemClock" using the following statement in my code
" SystemClock.setCurrentTimeMillis(offsetValue);"
when i do this, i see in the system logs the following error
"Unable to open alarm driver: Permission denied"
on both the emulator and on the Target.
I have also pasted the entire code of my application below:
Any help would be appreciated.
Regards
Aslam
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
NTPUDPClient client = new NTPUDPClient();
Process p;
//Runtime r = Runtime.getRuntime();
/*
try {
p = Runtime.getRuntime().exec("su");
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}*/
// client = new NTPUDPClient(); //
System.out.println("after calling NTPUDPClient client = new
NTPUDPClient()");
// We want to timeout if a response takes longer than 10
seconds
client.setDefaultTimeout(10000); //
try {
System.out.println("before client.open()");
/////////////////////////////////////////////////////////////////////////////////////
client.open();// THIS IS THE PLACE WHERE IT IS THROWING
THE EXCEPTION, I HAVE THE SAME CODE SAMPLE WRITTEN IN JAVA WHERE IT
// WORKING FINE.
/////////////////////////////////////////////////////////////////////////////////////
System.out.println("after client.open()");
// for (int i = 0; i < args.length; i++)//
// {//
System.out.println("entering into the 'try' blok");
try {
//InetAddress hostAddr =
InetAddress.getByName(args[i]); // 182.79.254.202
InetAddress hostAddr =
InetAddress.getByName("182.79.254.202");
System.out.println("getting the HostAddress and
Host Nae");
System.out.println("> " + hostAddr.getHostName()
+ "/" + hostAddr.getHostAddress());//
TimeInfo info = client.getTime(hostAddr);
/////////////////////////////////////////////////////////////////////////////////////////////////////////
NtpV3Packet message = info.getMessage();
int stratum = message.getStratum();
String refType;
if (stratum <= 0) {
refType = "(Unspecified or Unavailable)";
} else if (stratum == 1) {
refType = "(Primary Reference; e.g., GPS)"; //
GPS, radio clock, etc.
} else {
refType = "(Secondary Reference; e.g. via NTP
or SNTP)";
}
// System.out.println(" Stratum: " + stratum + " "
+ refType); //
int version = message.getVersion();
int li = message.getLeapIndicator();
System.out.println(" leap=" + li + ", version=" +
version + ", precision=" + message.getPrecision());//
System.out.println(" mode: " + message.getModeName()
+ " (" + message.getMode() + ")");//
int poll = message.getPoll();
// poll value typically btwn MINPOLL (4) and
MAXPOLL (14)
System.out.println(" poll: " + (poll <= 0 ? 1 :
(int) Math.pow(2, poll))+ " seconds" + " (2 ** " + poll + ")");//
double disp =
message.getRootDispersionInMillisDouble();
System.out.println(" rootdelay=" +
numberFormat.format(message.getRootDelayInMillisDouble())+ ",
rootdispersion(ms): " + numberFormat.format(disp));//
int refId = message.getReferenceId();
String refAddr = NtpUtils.getHostAddress(refId);
String refName = null;
String timeStamp = null;
if (refId != 0) {
if (refAddr.equals("127.127.1.0")) {
refName = "LOCAL"; // This is the ref
address for the Local Clock
} else if (stratum >= 2) {
// If reference id has 127.127 prefix then
it uses its own reference clock
// defined in the form 127.127.clock-
type.unit-num (e.g. 127.127.8.0 mode 5
// for GENERIC DCF77 AM; see refclock.htm
from the NTP software distribution.
if (!refAddr.startsWith("127.127")) {
try {
InetAddress addr =
InetAddress.getByName(refAddr);
String name = addr.getHostName();
if (name != null && !
name.equals(refAddr)) {
refName = name;
}
} catch (UnknownHostException e) {
// some stratum-2 servers sync to
ref clock device but fudge stratum level higher... (e.g. 2)
// ref not valid host maybe it's a
reference clock name?
// otherwise just show the ref IP
address.
refName =
NtpUtils.getReferenceClock(message);
}
}
} else if (version >= 3 && (stratum == 0 ||
stratum == 1)) {
refName =
NtpUtils.getReferenceClock(message);
// refname usually have at least 3
characters (e.g. GPS, WWV, LCL, etc.)
}
}
if (refName != null && refName.length() > 1) {
refAddr += " (" + refName + ")";
}
System.out.println(" Reference Identifier:\t" +
refAddr);//
TimeStamp refNtpTime =
message.getReferenceTimeStamp();//
System.out.println(" Reference Timestamp:\t" +
refNtpTime + " " + refNtpTime.toDateString());//
// Originate Time is time request sent by client
(t1)
TimeStamp origNtpTime =
message.getOriginateTimeStamp();//
System.out.println(" Originate Timestamp:\t" +
origNtpTime + " " + origNtpTime.toDateString());//
long destTime = info.getReturnTime();//
// Receive Time is time request received by server
(t2)
TimeStamp rcvNtpTime =
message.getReceiveTimeStamp();//
System.out.println(" Receive Timestamp:\t" +
rcvNtpTime + " " + rcvNtpTime.toDateString());//
// Transmit time is time reply sent by server (t3)
TimeStamp xmitNtpTime =
message.getTransmitTimeStamp();//
System.out.println(" Transmit Timestamp:\t" +
xmitNtpTime + " " + xmitNtpTime.toDateString());//
// Destination time is time reply received by
client (t4)
TimeStamp destNtpTime =
TimeStamp.getNtpTime(destTime);//
System.out.println(" Destination Timestamp:\t" +
destNtpTime + " " + destNtpTime.toDateString());//
// timeStamp = destNtpTime.toDateString();
timeStamp = xmitNtpTime.toDateString(); //
TextView tv = new TextView(this);
info.computeDetails(); // compute offset/delay if
not already done
Long offsetValue = info.getOffset();
Long delayValue = info.getDelay();
String delay = (delayValue == null) ? "N/A" :
delayValue.toString();
String offset = (offsetValue == null) ? "N/A" :
offsetValue.toString();
System.out.println(" Roundtrip delay(ms)=" + delay
+ ", clock offset(ms)=" + offset); // offset in ms
tv.setText(timeStamp);
setContentView(tv);
try {
p = Runtime.getRuntime().exec("su");
SystemClock.setCurrentTimeMillis(offsetValue); //
final Calendar cal = Calendar.getInstance();//
cal.setTimeInMillis(offsetValue);//
try {
p.waitFor();
if(p.exitValue()!= 255){
System.out.println("root permission
\n");
}
else{
System.out.println("No root permission
\n");
}
//}
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////
// processResponse(info);
} catch (IOException ioe) {
ioe.printStackTrace();
}
// }//
} catch (SocketException e) {//SocketException(String msg)
// catch (SocketException(String msg)){
e.printStackTrace();
//System.out.println(msg);
}
//setContentView(tv);
client.close();
}
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