I am writing trial start date to a file. I don't want the user to be
able to delete this file. How can I make sure that "Clear Data" won't
clear this file. Currently, the behavior I have seen is that the file
is deleted if user clicks "clear data". Here is my code in case it
helps.
private static final String TRIAL_FILE_NME="trial.file" ;
private static final String TRIAL_DIR_NME="trial";
private boolean setTrialStartDate (){
FileOutputStream fileWriter = null ;
boolean returnValue = true ;
try{
File dir = getDir(TRIAL_DIR_NME, MODE_PRIVATE);
File trialFile = new File(dir, TRIAL_FILE_NME);
fileWriter = openFileOutput(trialFile.getName(),
MODE_PRIVATE);
fileWriter.write(DateTimeUtil.getCurrentDateString().getBytes());
fileWriter.flush();
}
catch (FileNotFoundException filenotFound){
returnValue = false ;
}
catch (IOException exception){
returnValue = false ;
}
finally{
if ( fileWriter != null ){
try{
fileWriter.close();
}
catch (IOException exc){
fileWriter = null ;
returnValue = false ;
}
}
}
return returnValue ;
}
private String getTrialStartDate (){
FileInputStream fileReader = null ;
String dateString = null ;
try{
File dir = getDir(TRIAL_DIR_NME, MODE_PRIVATE);
File trialFile = new File(dir, TRIAL_FILE_NME);
fileReader = openFileInput(trialFile.getName());
byte[] totalBytes = new byte[fileReader.available()];
if ( fileReader.read(totalBytes) != -1 ){
dateString = new String (totalBytes);
}
}
catch (FileNotFoundException exception){
setTrialStartDate();
dateString = DateTimeUtil.getCurrentDateString();
}
catch (IOException exc){
//Error reading file. Simply return null
dateString = null ;
}
finally{
if ( fileReader != null ){
try{
fileReader.close();
}
catch (IOException exc){
//Although it might be safe to return what's in
dateString at
this
//point, but since there is an I/O issue, it is
better to
return
//null
dateString = null ;
fileReader = null ;
}
}
}
return dateString ;
}
--
You received this message because you are subscribed to the Google
Groups "Android Developers" group.
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to
[email protected]
For more options, visit this group at
http://groups.google.com/group/android-developers?hl=en
