android mit media scanner für SD-Karte

Hallo zu allen
im Versuch, eine Sicherung auf eine SD-Karte und ich habe ein problem mit dem media-scanner Scannen Sie die neue Datei gespeichert, so dass es sofort verfügbar ist

sind die Fehler in den folgenden Zeilen

new String[] { file.toString() }, null, //error: file cannot be resolved

new MediaScannerConnection.OnScanCompletedListener() { 
//error: MediaScannerConnection.OnScanCompletedListener cannot be resolved to a type

dies ist mein code:

public void saveToSDCard(Bitmap bitmap, String name) {
        boolean mExternalStorageAvailable = false;
        boolean mExternalStorageWriteable = false;
        String state = Environment.getExternalStorageState();
        if (Environment.MEDIA_MOUNTED.equals(state)) {
            mExternalStorageAvailable = mExternalStorageWriteable = true;
            Log.v(TAG, "SD Card is available for read and write "
                    + mExternalStorageAvailable + mExternalStorageWriteable);
            saveFile(bitmap, name);
        } else if (Environment.MEDIA_MOUNTED_READ_ONLY.equals(state)) {
            mExternalStorageAvailable = true;
            mExternalStorageWriteable = false;
            Log.v(TAG, "SD Card is available for read "
                    + mExternalStorageAvailable);
        } else {
            mExternalStorageAvailable = mExternalStorageWriteable = false;
            Log.v(TAG, "Please insert a SD Card to save your Ad "
                    + mExternalStorageAvailable + mExternalStorageWriteable);
        }
    }

    private void saveFile(Bitmap bitmap, String name) {

        String filename = name;
        ContentValues values = new ContentValues();
        File sdImageMainDirectory = new File(Environment
                .getExternalStorageDirectory(), getResources().getString(
                R.string.directory));
        sdImageMainDirectory.mkdirs();
        File outputFile = new File(sdImageMainDirectory, filename);
        values.put(MediaStore.MediaColumns.DATA, outputFile.toString());
        values.put(MediaStore.MediaColumns.TITLE, filename);
        values.put(MediaStore.MediaColumns.DATE_ADDED, System
                .currentTimeMillis());
        values.put(MediaStore.MediaColumns.MIME_TYPE, "image/png");
        Uri uri = this.getContentResolver().insert(
                android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI,

                values);
        try {
            OutputStream outStream = this.getContentResolver()
                    .openOutputStream(uri);
            bitmap.compress(Bitmap.CompressFormat.PNG, 95, outStream);

            outStream.flush();
            outStream.close();
        //this is where im having the problem  
        //Tell the media scanner about the new file so that it is
            //immediately available to the user.
            MediaScannerConnection.scanFile(this,
                    new String[] { file.toString() }, null,
                    new MediaScannerConnection.OnScanCompletedListener() {
                public void onScanCompleted(String path, Uri uri) {
                    Log.v("ExternalStorage", "Scanned " + path + ":");
                    Log.v("ExternalStorage", "-> uri=" + uri);
                }
            });
        } catch (IOException e) {
            //Unable to create file, likely because external storage is
            //not currently mounted.
            Log.v("ExternalStorage", "Error writing " + file, e);
        }
    }