The method OpenFileOutput() is undefined !

Question

firstly, I coded some methods in Main Activity, But I decided they should be a class.

this is my code... openFileOutput and openFileInput are undefined. Any idea?? maybe it should be service or activity...??

    package spexco.hus.system;

    import java.io.FileInputStream;
    import java.io.FileNotFoundException;
    import java.io.FileOutputStream;
    import java.io.IOException;
    import java.util.Date;
    import spexco.hus.cepvizyon.CepVizyon;
    import android.content.Context;

    public class LicenseIDB {
    private String PHONECODEFILE = "CepVizyonCode";
    private static String PhoneCode = null;

    public LicenseIDB() {
    if (readLocal(PHONECODEFILE, 8) == null)
        createSystemCode();
}

public static long getDate() {
    Date currentTime = new Date();
    return currentTime.getTime();
}

public void createSystemCode() {
    long date = getDate();
    String str = Integer.toHexString(Integer.MAX_VALUE - (int) date);
    for (int i = str.length(); i < 8; i++) {
        str += "" + i;
    }
    PhoneCode = str.substring(0, 8);
    saveLocal(PhoneCode, PHONECODEFILE);

}

public static String getPhoneCode() {

    return PhoneCode;
}

public void saveLocal(String fileString, String Adress) {

    try {
        FileOutputStream fos = openFileOutput(Adress, Context.MODE_PRIVATE);
        fos.write(fileString.getBytes());
        fos.close();
    } catch (FileNotFoundException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

public String readLocal(String Adress, int lenght) {
    byte[] buffer = new byte[lenght];
    String str = new String();
    try {
        FileInputStream fis = openFileInput(Adress);
        fis.read(buffer);
        fis.close();
        str = new String(buffer);
    } catch (FileNotFoundException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    return str;
}

}

Possible duplicate of [android what is wrong with openFileOutput?](http://stackoverflow.com/questions/3625837/android-what-is-wrong-with-openfileoutput) — Michael Gaskill, Oct 31 '16 at 09:04
@MichaelGaskill yes, it is possible. But these questions are 6 years old..:) i think, i opened question after I researched a lot. But I don't remember, just thinking..:) — atasoyh, Nov 03 '16 at 13:53

Pontus Gagge · Accepted Answer · 2010-10-25T15:14:59.530

38

Those are methods defined on the Context class, not methods defined in your class. When your code was part of an Activity, it could use a convenience method openFileInput() in its Activity base class to access the underlying Context.getApplicationContext().openFileInput() (and similarly for openFileOutput()).

Now you'll have to replace those with the direct calls to the underlying Context methods.

edited Oct 25 '10 at 15:14

answered Oct 25 '10 at 15:03

Pontus Gagge

17,166
1
38
51

score 13 · Answer 2 · edited Jan 04 '16 at 07:12

13

Replace

FileOutputStream fos = openFileOutput(Adress, Context.MODE_PRIVATE);

with below line

FileOutputStream fos = getApplicationContext().openFileOutput(filename, getActivity().MODE_PRIVATE);

If used inside Fragment

FileOutputStream fos =getActivity().openFileOutput(filename, getActivity().MODE_PRIVATE);

edited Jan 04 '16 at 07:12

Peter

14,221
15
70
110

answered Jan 04 '14 at 12:30

Antesh Sharma

309
2
3

I am doing `getContext().openFileOutput(filename,Context.MODE_PRIVATE)` inside a fragment ,and it still works....My question is what is the difference between `getContext()` and `getActivity()` . – eRaisedToX Apr 19 '17 at 09:54
I'm in a fragment and 'getActivity().MODE_PRIVATE' did not work for me. I just used Context.MODE_PRIVATE – madbeans May 12 '22 at 03:12

The method OpenFileOutput() is undefined !

2 Answers2