java - 書き込まれたばかりのファイルを読み取れません

Question

ユーザー資格情報が書き込まれたファイルから読み取ろうとしています。ファイルを内部ストレージの場所に書き込みたい。コード：

 private void writeSendDetails(String name, String number, String emailID) {

        //This function writes details to userCredentials.txt and also sends it to server.
        String text = "Name: " + userName + "\n" + "Number: " + userNumber + "\n" + "Email ID:" + userEmailID;
        FileOutputStream fos = null;
        try {
            fos = openFileOutput(userCredFile, MODE_PRIVATE);
            Log.v(this.toString(), fos.toString());
        } catch (FileNotFoundException e1) {
            // TODO Auto-generated catch block
            e1.printStackTrace();
        }

        if(fos != null) {
            OutputStreamWriter osw = new OutputStreamWriter(fos);
            try {
                osw.write(text);
            } catch (IOException e) {
                // TODO Auto-generated catch block
                Log.v(this.toString(), "IOException caught in osw.write");
                e.printStackTrace();
            }
            try {
                osw.flush();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            try {
                osw.close();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }

        Log.v(this.toString(), "Written everything to userCredentials.txt");
        readUserCredentials();
        //code to send to server should begin here.

    }

private void readUserCredentials() {
        //function to read name, number and email ID from userCredentials.txt
        /* Steps:
         * 1. Check if file exists.
         * 2. If it does, read all relevant credentials.
         */

        File f = new File(userCredFile);
        if(f.canRead()) {
            Log.v(this.toString(), "Can open userCredentials for reading from.");
        }

        try {
            FileReader fis = new FileReader(f);
            Log.v(this.toString(), "Wrapping a buffered reader around file reader.");
            BufferedReader bufRead = new BufferedReader(fis, 100);
            String line;
            try {
                while((line = bufRead.readLine()) != null) {
                    Log.v(this.toString(), "Line read = " + line);
                    line = bufRead.readLine();
                    if(line.indexOf("Name: ") != -1) {
                        Log.v(this.toString(), "Found name in the string.");
                        userName = line.substring(6);
                    } else if(line.indexOf("Number: ") != -1) {
                        Log.v(this.toString(), "Found number in the string.");
                        userNumber = line.substring(8);
                    } else if(line.indexOf("Email ID: ") != -1) {
                        Log.v(this.toString(), "Found email in the string.");
                        userEmailID = line.substring(10);
                    }
                }
                Log.v(this.toString(), "User credentials = " + userName + "   " + userNumber + "    " + userEmailID);
            } catch (IOException e) {
                Log.v(this.toString(), "IOException caught.");
            }
        } catch (FileNotFoundException e1) {
            Log.v(this.toString(), "File not found for reading.");
        }
    }

LogCat出力は次 のとおりです。

04-14 15:20:43.789: V/com.sriram.htmldisplay.htmlDisplay@44c0c660(675): Written everything to userCredentials.txt
04-14 15:20:43.789: V/com.sriram.htmldisplay.htmlDisplay@44c0c660(675): File not found for reading.
04-14 15:20:43.889: V/com.sriram.htmldisplay.fireflymenu@44c401e0(675): File not found for reading.

私の質問:
1. ファイルを内部ストレージに書き込む必要があります。私はそれを正しくやっていますか？
2. 書き込まれたばかりのファイルが読み取られないのはなぜですか?