Hello there, hope you can help me somehow. I've got this class example
which used to work just fine. Basiclly it just writes to the sd card a
log file with some of my device information.
public class LogToSD
{
static PrintWriter outFile = null;
private static void initialize()
{
try {
File root = Environment.getExternalStorageDirectory();
if( root.canWrite() )
{
Calendar rightNow = Calendar.getInstance();
long day = rightNow.get( Calendar.DAY_OF_YEAR );
long hour = rightNow.get( Calendar.HOUR_OF_DAY );
long minutes = rightNow.get( Calendar.MINUTE );
long seconds = rightNow.get( Calendar.SECOND );
String date = +day + "d_" + hour + "h-" + minutes +
"m-" + seconds + "s";
File gpxfile = new File( root, "ThenNnow_" + date +
".log" );
FileWriter gpxwriter = new FileWriter( gpxfile );
outFile = new PrintWriter( gpxwriter );
outFile.write( "\n\n----- THEN-N-NOW USER TESTING LOG
-----\n" );
outFile.write( "----- INITIAL TIME (dd_hh-mm-ss): " +
date + " -----\n\n" );
}
} catch (IOException e) {
Log.e( "LogToSD", "Could not write to file: " +
e.getMessage());
}
}
public static void write( String text1, String text2 )
{
if( outFile == null )
initialize();
Calendar rightNow = Calendar.getInstance();
long minutes = rightNow.get( Calendar.MINUTE );
long seconds = rightNow.get( Calendar.SECOND );
long ms = rightNow.get( Calendar.MILLISECOND );
String time = minutes + ":" + seconds + "." + ms;
outFile.write( time + "\t" + text1 + ": " + text2 + "\n" );
outFile.flush();
Log.v( "LogToSD", text1 + " " + text2 );
}
public static void shutdown()
{
if( outFile != null )
outFile.close();
}
}
In my main activity this method is called like this:
if (ar.equals("1")){
LogToSD.write("AR:", "User Location (Latitude:"+
(currentlocation.getLatitude() * 1E6)+", Longitude:"+
(currentlocation.getLongitude() * 1E6)+")");
}else{
LogToSD.write("Normal:", "User Location (Latitude:"+
(currentlocation.getLatitude() * 1E6)+", Longitude:"+
(currentlocation.getLongitude() * 1E6)+")");
}
This was working just fine and now I'm getting a NullPointerException
which I have no idea where it came from but it points to this lines of
code in the main activity which I just pasted before. Can someone
please help?
09-17 15:53:03.075: ERROR/AndroidRuntime(921): Uncaught handler:
thread main exiting due to uncaught exception
09-17 15:53:03.215: ERROR/AndroidRuntime(921):
java.lang.NullPointerException
09-17 15:53:03.215: ERROR/AndroidRuntime(921): at
com.pedroteixeira.thennnow.LogToSD.write(LogToSD.java:53)
Thank you very much for your help.
Pedro
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