FileWriter: How to set the destination folder?

Question

I'm developing a little Game at the Moment (Android-App) and I want to save my Highscores into a .txt-File, because if I would save it just in a list, the list would be empty everytime I start the App new. For java-programs in general this is not a problem for me, because the FileWriter creates a .txt in the program-folder. If I do that in Android, I get (of course) the error, that he couldnt create the file.

So how do I tell the FileWriter where to save the File and where should I save it? Does the FileWriter deletes an existing file and creates a new file with the same name if the filename already exists like the "MODE_PRIVATE"-Mode from the FileOutput?

I know I could use the FileOutput/InputStream to save a file in the internal storage, but the FileOutput just accepts bytes (which is no problem with the .getBytes()-Method), but I cant find a way to transform the bytes back into Strings when I want to read them.

(I apologize for any grammar-mistakes as english is not my native language)

UPDATE:

At first big thanks for the help so far. But i still need some specific help. Thats what i want to do: Everytime my Game is finished, I switch to the Points activity and give him the points reached. In the points-activity I put the points into a List and write this list into a file in the internal storage. In the Highscores-Activity I want to read this file and put the content of the File in a List to print it on the Screen with a ListView. This is the code for writing the File:

ArrayList<Integer> highscoreListe = new ArrayList<Integer>();
punkte = getIntent().getExtras().getInt("Punkte");
public void writeToExternalStoragePublic() throws IOException
 {
     String filename = "highscores.txt"; 

     FileOutputStream fos= null;
     OutputStreamWriter osw = null;
     fos= openFileOutput(filename,Context.MODE_PRIVATE);
     osw = new OutputStreamWriter(fos);
     for(Integer score : highscoreListe)
     {
         osw.write(score);
         osw.append(System.getProperty("line.separator"));
     }
     osw.close();
     fos.close();
 }

I read a lot of Questions on stackoverflow about this but I still dont know how to read this file to put for every line in the file a new string or int into a list. I hope you understand what I want to do.

score 0 · Accepted Answer · edited May 23 '17 at 10:34

0

plese refe this link to wtire a file

http://developer.android.com/guide/topics/data/data-storage.html#pref

Writing to text file in "APPEND mode" in emulator-mode,

does the FileWriter deletes an existing file and creates a new file with the same name if the filename already exists

yes but consider

public FileWriter(File file,
                  boolean append)
append - if true, then bytes will be written to the end of the file rather than the beginning

it you want to make your file private write in internal storage.

edited May 23 '17 at 10:34

Community

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answered Jun 14 '12 at 06:38

Dheeresh Singh

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Ok well I think I didnt get the whole idea behind this. I mean the SharedMedia doesnt seems to be what i need, because you cant put a list of integers into it (just primitive types and a set of strings). The FileOutputStream just accepts bytes right? So I have a File which is filled with bytes. How do I transform these bytes back into strings when I want to read the File in another Activity and save the content into a list of integers? – Marcel Jun 14 '12 at 08:33
not exactly sure for what you looking ? as you can read data from while and can covert that to string and can parse that to int http://stackoverflow.com/questions/2902689/how-can-i-read-a-text-file-from-the-sd-card-in-android – Dheeresh Singh Jun 15 '12 at 20:14
https://www.google.co.in/search?rlz=1C1AVSX_enIN409IN409&sugexp=chrome,mod=17&sourceid=chrome&ie=UTF-8&q=android+reaing+data+from+file+ – Dheeresh Singh Jun 15 '12 at 20:17
Thanks dude, that really helped me to improve my understanding on this topic, but I still have a problem with the reading. I put a Update on my question, maybe you know what to do. – Marcel Jun 16 '12 at 09:23

FileWriter: How to set the destination folder?

1 Answers1