Add Text To An Existing Text File

Question

Hello I am new to Android development. I am developing an app as a training. So now my target is to add some new text to an existing text file.

For example: I have a text file in "sdCard/android.txt" and in this file there are some data written "I love android". Now I want to add some more texts "It is awesome" in a new line of that file.

Finally the android.txt ahould look like this:

I love android
It is awesome

So how can I achieve that?

Answer 1

You can just do it as you do it in Java.

try {
    String fn = getExternalFilesDir(null) + File.separator + "android.txt";
    BufferedWriter bw = new BufferedWriter(new FileWriter(fn, true));
    bw.write("\nIt is awesome\n");
    bw.close();

    // checking
    BufferedReader br = new BufferedReader(new FileReader(fn));
    String line;
    while ((line = br.readLine()) != null) {
        System.out.println(line);
    }
    br.close();
} catch (IOException e) {
    e.printStackTrace();
}