The method OpenFileOutput() is undefined !
android, local-storage
Solution
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.
Problem
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; } ``` }