Android чтение и запись в файл?

[Sasha9132]

Android чтение и запись в файл?

Народ подскажите где я не прав
Вот код:

package com.samples.filesrw;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.EditText;
import android.widget.Toast;

public class EditorActivity extends Activity {
    /** Called when the activity is first created. */
    
	public static final int IDM_OPEN = 101;
	public static final int IDM_SAVE = 102;
	public static final int IDM_EXIT = 103;
	
	private final static String FILENAME = "file.txt";
	private EditText mEdit;
	
	@Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        mEdit = (EditText)findViewById(R.id.edit);
    }
	
	@Override
	public boolean onCreateOptionsMenu(Menu menu){
		menu.add(Menu.NONE, IDM_OPEN, Menu.NONE, "Open").setIcon(R.drawable.ic_menu_open).setAlphabeticShortcut('o');
		menu.add(Menu.NONE, IDM_SAVE, Menu.NONE, "Save").setIcon(R.drawable.ic_menu_save).setAlphabeticShortcut('s');
		menu.add(Menu.NONE, IDM_EXIT, Menu.NONE, "Exit").setIcon(R.drawable.ic_menu_exit).setAlphabeticShortcut('x');
		return (super.onCreateOptionsMenu(menu));
	}
	
	@Override
	public boolean onOptionsItemSelected(MenuItem item){
		switch(item.getItemId()){
		case IDM_OPEN:
			openFile(FILENAME);
			break;
		case IDM_SAVE:
			saveFile(FILENAME);
			break;
		case IDM_EXIT:
			finish();
			break;
		default:
			return false;
		}
		return true;
	}
	
	private void openFile(String fileName){
		try{
			InputStream inStream = openFileInput(FILENAME);
			
			if(inStream != null){
				InputStreamReader sr = new InputStreamReader(inStream);
				BufferedReader reader = new BufferedReader(sr);
				String str;
				StringBuffer buffer = new StringBuffer();
				
				while((str = reader.readLine()) != null){
					buffer.append(str + "\n");
				}
				
				inStream.close();
				mEdit.setTag(buffer.toString());
			}
		}catch(Throwable t){
			Toast.makeText(getApplicationContext(), "Exception: " + t.toString(), Toast.LENGTH_LONG).show();
		}
	}
	
	private void saveFile(String fileName){
		try{
			OutputStream outStream = openFileOutput(FILENAME, 0);
			OutputStreamWriter sw = new OutputStreamWriter(outStream);
			
			sw.write(mEdit.getText().toString());
			sw.close();
		}catch(Throwable t){
			Toast.makeText(getApplicationContext(), "Exception: " + t.toString(), Toast.LENGTH_LONG).show();
		}
	}
}

Не могу понять где ошибка, нет не каких исключений но не хочет записывать и читать.