Read from .txt in sdcard and insert to edit text

Question

I made an android program where we(user) can set the id etc. from Edit Text and then that value will be saved into .txt file in sdcard. I already can do that (make a .txt file in sdcard. now I'm trying to read that .txt file in other activities in my application and insert that value in edit text there when this activities start/begin.. I need that so I can set for example "id" just one time in my application,, and then everytime user makes a form entries data, some data that set before for example "id" already insert into edit text in entries activities there..

this is my code for insert value from edit text and make .txt file in sdcard:

public class Setting extends Activity implements OnClickListener {
    Button submit2;
    //private String filename = "AsriConfig.txt";
    //private String filepath = "MyFileStorage";
    //File myInternalFile;


    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);
        setContentView(R.layout.setting);
        getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.window_title);


        //ContextWrapper contextWrapper = new ContextWrapper(getApplicationContext());
        //File directory = contextWrapper.getDir(filepath, Context.MODE_PRIVATE);
        //myInternalFile = new File(directory, filename);

     // Set up click listeners for all the buttons
        submit2=(Button)findViewById(R.id.buttom_submit2);
        submit2.setOnClickListener(this);

    }


    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub
        EditText agen2 = (EditText) findViewById(R.id.agen2);

        switch (v.getId()) {
        case R.id.buttom_submit2 :
            try {
                File myFile = new File("/sdcard/myconfig.txt");
                myFile.createNewFile();
                FileOutputStream fOut = new FileOutputStream(myFile);
                OutputStreamWriter myOutWriter = new OutputStreamWriter(fOut); 
                myOutWriter.append(agen2.getText());
                myOutWriter.close();
                fOut.close();
                Toast.makeText(this, "Data telah tersimpan..",Toast.LENGTH_SHORT).show();

            } catch (IOException e) {
                e.printStackTrace();
            }
            agen2.setText("");

            break;
            }
    }

and then this is my code in other activities for read value of .txt file from sdcard and automatically insert to Edit text where activities started:

public class CreateData extends Activity implements OnClickListener{

    //inisilisasi elemen-elemen pada layout

    private String array_spinner[];
    private String array_spinner1[];

    private Button buttonSubmit;
    private EditText edAgen;
    private EditText edNo_kk;
    private EditText edNo_blanko;
    private EditText edNama;
    private EditText edAlamat;
    private EditText edJml_tertanggung;
    private Spinner edPilihan;
    private EditText edTelepon;
    private EditText edTertanggung1;
    private Spinner edStatus1;
    private EditText edTertanggung2;
    private Spinner edStatus2;
    private EditText edTertanggung3;
    private Spinner edStatus3;
    private EditText edTertanggung4;
    private Spinner edStatus4;
    private EditText edTertanggung5;
    private Spinner edStatus5;
    private EditText edTertanggung6;
    private Spinner edStatus6;

    private EditText edTertanggung7;
    private Spinner edStatus7;
    private EditText edTertanggung8;
    private Spinner edStatus8;
    private EditText edTertanggung9;
    private Spinner edStatus9;
    private EditText edTertanggung10;
    private Spinner edStatus10;

    //inisialisasi kontroller/Data Source
    private DBDataSource dataSource;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);
        setContentView(R.layout.create_data);
        getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.window_title);

        //File file = new File("/sdcard/myconfig.txt");

        String ret = "";

        try {
            InputStream inputStream = openFileInput("myconfig.txt");
            if (inputStream != null) {
                InputStreamReader inputStreamReader = new InputStreamReader(inputStream);
                BufferedReader br = new BufferedReader(inputStreamReader);
                String line = "";
                StringBuilder text = new StringBuilder();

            while ((line = br.readLine()) != null) {
                text.append(line);
            }
            inputStream.close();
            ret = text.toString();
            }
        }
        catch (IOException e) {
            e.printStackTrace();
        }

        edAgen.setText(ret);

        buttonSubmit = (Button) findViewById(R.id.buttom_submit);
        buttonSubmit.setOnClickListener(this);
        edAgen = (EditText) findViewById(R.id.agen);
        edNo_kk = (EditText) findViewById(R.id.no_kk);
        edNo_blanko = (EditText) findViewById(R.id.no_blanko);
        edJml_tertanggung = (EditText) findViewById(R.id.jml_tertanggung);
        edNama = (EditText) findViewById(R.id.nama);
        edAlamat = (EditText) findViewById(R.id.alamat);

        array_spinner=new String[10];
        array_spinner[0]="A1";
        array_spinner[1]="A2";
        array_spinner[2]="A3";
        array_spinner[3]="A4";
        array_spinner[4]="A5";
        array_spinner[5]="B1";
        array_spinner[6]="B2";
        array_spinner[7]="B3";
        array_spinner[8]="B4";
        array_spinner[9]="B5";
        edPilihan = (Spinner) findViewById(R.id.pilihan_paket);
        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, array_spinner);
        edPilihan.setAdapter(adapter);

        array_spinner1=new String[4];
        array_spinner1[0]=" ";
        array_spinner1[1]="SUAMI";
        array_spinner1[2]="ISTRI";
        array_spinner1[3]="ANAK";

        edStatus1 = (Spinner) findViewById(R.id.status1);
        ArrayAdapter<String> adapter1 = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, array_spinner1);
        edStatus1.setAdapter(adapter1);

        edStatus2 = (Spinner) findViewById(R.id.status2);
        ArrayAdapter<String> adapter2 = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, array_spinner1);
        edStatus2.setAdapter(adapter2);

        edStatus3 = (Spinner) findViewById(R.id.status3);
        ArrayAdapter<String> adapter3 = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, array_spinner1);
        edStatus3.setAdapter(adapter3);

        edStatus4 = (Spinner) findViewById(R.id.status4);
        ArrayAdapter<String> adapter4 = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, array_spinner1);
        edStatus4.setAdapter(adapter4);

        edStatus5 = (Spinner) findViewById(R.id.status5);
        ArrayAdapter<String> adapter5 = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, array_spinner1);
        edStatus5.setAdapter(adapter5);

        edStatus6 = (Spinner) findViewById(R.id.status6);
        ArrayAdapter<String> adapter6 = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, array_spinner1);
        edStatus6.setAdapter(adapter6);

        edStatus7 = (Spinner) findViewById(R.id.status7);
        ArrayAdapter<String> adapter7 = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, array_spinner1);
        edStatus7.setAdapter(adapter7);

        edStatus8 = (Spinner) findViewById(R.id.status8);
        ArrayAdapter<String> adapter8 = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, array_spinner1);
        edStatus8.setAdapter(adapter8);

        edStatus9 = (Spinner) findViewById(R.id.status9);
        ArrayAdapter<String> adapter9 = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, array_spinner1);
        edStatus9.setAdapter(adapter9);

        edStatus10 = (Spinner) findViewById(R.id.status10);
        ArrayAdapter<String> adapter10 = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, array_spinner1);
        edStatus10.setAdapter(adapter10);

        edTelepon = (EditText) findViewById(R.id.telepon);
        edTertanggung1 = (EditText) findViewById(R.id.tertanggung1);

        edTertanggung2 = (EditText) findViewById(R.id.tertanggung2);

        edTertanggung3 = (EditText) findViewById(R.id.tertanggung3);

        edTertanggung4 = (EditText) findViewById(R.id.tertanggung4);

        edTertanggung5 = (EditText) findViewById(R.id.tertanggung5);

        edTertanggung6 = (EditText) findViewById(R.id.tertanggung6);

        edTertanggung7 = (EditText) findViewById(R.id.tertanggung7);
        edTertanggung8 = (EditText) findViewById(R.id.tertanggung8);
        edTertanggung9 = (EditText) findViewById(R.id.tertanggung9);
        edTertanggung10 = (EditText) findViewById(R.id.tertanggung10);

        // instanstiasi kelas DBDataSource
        dataSource = new DBDataSource(this);

        //membuat sambungan baru ke database
        dataSource.open();
    }

    //KETIKA Tombol Submit Diklik
    @Override
    public void onClick(View v) {
        // Inisialisasi data barang
        String agen = null;
        String no_kk = null;
        String no_blanko = null;
        String nama = null;
        String alamat = null;
        String jml_tertanggung = null;
        String pilihan = edPilihan.getSelectedItem().toString();
        String telepon = null;
        String tertanggung1 = null;
        String status1 = edStatus1.getSelectedItem().toString();
        String tertanggung2 = null;
        String status2 = edStatus2.getSelectedItem().toString();
        String tertanggung3 = null;
        String status3 = edStatus3.getSelectedItem().toString();
        String tertanggung4 = null;
        String status4 = edStatus4.getSelectedItem().toString();
        String tertanggung5 = null;
        String status5 = edStatus5.getSelectedItem().toString();
        String tertanggung6 = null;
        String status6 = edStatus6.getSelectedItem().toString();

        String tertanggung7 = null;
        String status7 = edStatus7.getSelectedItem().toString();
        String tertanggung8 = null;
        String status8 = edStatus8.getSelectedItem().toString();
        String tertanggung9 = null;
        String status9 = edStatus9.getSelectedItem().toString();
        String tertanggung10 = null;
        String status10 = edStatus10.getSelectedItem().toString();
        @SuppressWarnings("unused")


        //inisialisasi barang baru (masih kosong)
        Barang barang = null;
        if(edAgen.getText()!=null && edNo_kk.getText()!=null && edNo_blanko.getText()!=null && edNama.getText()!=null && edAlamat.getText()!=null && edJml_tertanggung.getText()!=null && //edPilihan.getContext()!=null &&
                edTelepon.getText()!=null && 
                edTertanggung1.getText()!=null && //edStatus1.getText()!=null && 
                edTertanggung2.getText()!=null && //edStatus2.getText()!=null && 
                edTertanggung3.getText()!=null && //edStatus3.getText()!=null && 
                edTertanggung4.getText()!=null && //edStatus4.getText()!=null && 
                edTertanggung5.getText()!=null && //edStatus5.getText()!=null && 
                edTertanggung6.getText()!=null &&
                edTertanggung7.getText()!=null &&
                edTertanggung8.getText()!=null &&
                edTertanggung9.getText()!=null &&
                edTertanggung10.getText()!=null) //edStatus6.getText()!=null)
        {
            /* jika field nama, merk, dan harga tidak kosong
             * maka masukkan ke dalam data barang*/
            agen = edAgen.getText().toString();
            no_kk = edNo_kk.getText().toString();
            no_blanko = edNo_blanko.getText().toString();
            nama = edNama.getText().toString();
            alamat = edAlamat.getText().toString();
            jml_tertanggung = edJml_tertanggung.getText().toString();
            //pilihan = edPilihan.getContext().toString();
            telepon = edTelepon.getText().toString();
            tertanggung1 = edTertanggung1.getText().toString();
            //status1 = edStatus1.getText().toString();
            tertanggung2 = edTertanggung2.getText().toString();
            //status2 = edStatus2.getText().toString();
            tertanggung3 = edTertanggung3.getText().toString();
            //status3 = edStatus3.getText().toString();
            tertanggung4 = edTertanggung4.getText().toString();
            //status4 = edStatus4.getText().toString();
            tertanggung5 = edTertanggung5.getText().toString();
            //status5 = edStatus5.getText().toString();
            tertanggung6 = edTertanggung6.getText().toString();
            //status6 = edStatus6.getText().toString();
            tertanggung7 = edTertanggung7.getText().toString();
            tertanggung8 = edTertanggung8.getText().toString();
            tertanggung9 = edTertanggung9.getText().toString();
            tertanggung10 = edTertanggung10.getText().toString();

        }   

        switch(v.getId())
        {
            case R.id.buttom_submit:
                // insert data barang baru
                barang = dataSource.createBarang(agen, no_kk, no_blanko, nama, alamat, jml_tertanggung, pilihan, telepon, tertanggung1, status1, tertanggung2, status2, tertanggung3, status3, tertanggung4, status4, tertanggung5, status5, tertanggung6, status6, tertanggung7, status7, tertanggung8, status8, tertanggung9, status9, tertanggung10, status10);

                Intent z = new Intent(this, Otorisasi.class);
                startActivity(z);
                CreateData.this.finish();
                //konfirmasi kesuksesan
                Toast.makeText(this, "masuk Entri\n" +
                        "id_agen:" + barang.getAgen() +
                        "no_kk:" + barang.getNo_kk() +
                        "no_blanko:" + barang.getNo_blanko() +
                        "nama:" + barang.getNama() +
                        "alamat:" + barang.getAlamat() +
                        "jml_tertanggung:" + barang.getJml_tertanggung() +
                        "pilihan:" + barang.getPilihan_paket() +
                        "telepon:" + barang.getTelepon() +
                        "tertanggung1:" + barang.getTertanggung1() +
                        "status1:" + barang.getStatus1() +
                        "tertanggung2:" + barang.getTertanggung2() +
                        "status2:" + barang.getStatus2() +
                        "tertanggung3:" + barang.getTertanggung3() +
                        "status3:" + barang.getStatus3() +
                        "tertanggung4:" + barang.getTertanggung4() +
                        "status4:" + barang.getStatus4() +
                        "tertanggung5:" + barang.getTertanggung5() +
                        "status5:" + barang.getStatus5() +
                        "tertanggung6:" + barang.getTertanggung6() +
                        "status6:" + barang.getStatus6(), Toast.LENGTH_LONG).show();
                break;

        }
    }

Please look into variable agen and edAgen.. I try set that field from value in .txt file

Answer 1

<EditText
    android:id="@+id/edtText" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent"/>

And your code will look like this:

//Find the directory for the SD Card using the API
//*Don't* hardcode "/sdcard"
File sdcard = Environment.getExternalStorageDirectory();

//Get the text file
File file = new File(sdcard,"file.txt");

//Read text from file
StringBuilder text = new StringBuilder();

try {
    BufferedReader br = new BufferedReader(new FileReader(file));
    String line;

    while ((line = br.readLine()) != null) {
        text.append(line);
        text.append('\n');
    }
    br.close();
}
catch (IOException e) {
    //You'll need to add proper error handling here
}

//Find the view by its id
EditText edtText = (EditText)findViewById(R.id.edtText);

//Set the text
edtText.setText(text);