How to append data one by one in existing file in android?

Question

How to append data one by one in existing file? Am using following code.. Append the data row order in file..How to solve this?

    private String SaveText() {

    File sdCard = Environment.getExternalStorageDirectory();
    File dir = new File (sdCard.getAbsolutePath()+File.separator+"GPS");
    dir.mkdirs();

    String fname =  "gps.txt";
    File file = new File (dir, fname);

   FileOutputStream fos;
    try {

        fos = new FileOutputStream(file,true);
        OutputStreamWriter out=new OutputStreamWriter(fos);
        out.write(value1);
        out.close();
        fos.close();

        Toast.makeText(getApplicationContext(), "Saved lat,long", Toast.LENGTH_SHORT).show();

    } catch (Exception e) {
        e.printStackTrace();
    }
    return dir.getAbsolutePath();
}

If you are using java 7 you can try `Files.write...()` – Rustam Aug 25 '15 at 06:48 — Rustam, Aug 25 '15 at 06:48

score 0 · Answer 1 · answered Aug 25 '15 at 06:48

0

Try this code

    try{

        OutputStreamWriter writer = new OutputStreamWriter(new FileOutputStream(file,true), "UTF-8");
        BufferedWriter fbw = new BufferedWriter(writer);
        fbw.write(value1);
        fbw.newLine();
        fbw.close();
       Toast.makeText(getApplicationContext(), "Saved lat,long", Toast.LENGTH_SHORT).show();
    }
    catch (Exception e) {
        e.printStackTrace();
    }

answered Aug 25 '15 at 06:48

sasikumar

12,540
3
28
48

Am using your code work fine but same value stored one by one that is why? – Mani Aug 25 '15 at 07:14
fbw.newLine(); so that stored one by one – sasikumar Aug 25 '15 at 07:14
if you satisfied answer, click +1 for post – sasikumar Aug 25 '15 at 07:16

score 0 · Answer 2 · answered Aug 25 '15 at 06:53

Copy and paste this code.

public void SaveText(String sFileName, String sBody){
try
{
    File root = new File(Environment.getExternalStorageDirectory(), "Notes");
    if (!root.exists()) {
        root.mkdirs();
    }
    File gpxfile = new File(root, sFileName);
    FileWriter writer = new FileWriter(gpxfile);
    writer.append(sBody);
    writer.flush();
    writer.close();
    Toast.makeText(this, "Saved", Toast.LENGTH_SHORT).show();
}
catch(IOException e)
{
     e.printStackTrace();
     importError = e.getMessage();
     iError();
}}

score -1 · Answer 3 · edited May 23 '17 at 12:29

-1

In JAVA 7 you can try:

       try {

             Files.write(Paths.get(dir+File.separator+fname), latLng.getBytes(), StandardOpenOption.APPEND);

            } catch (IOException e) {
                e.printStackTrace();
           }

checkout Beautiful explanation :here

edited May 23 '17 at 12:29

Community

1
1

answered Aug 25 '15 at 06:49

Rustam

6,485
1
25
25

1

Android is Java 6 based and there is no backport of `java.nio.file` – Jared Rummler Aug 25 '15 at 06:57

How to append data one by one in existing file in android?

3 Answers3