How to write an ArrayList to file and retrieve it?

Question

now im trying to use this

FileOutputStream fos = getContext().openFileOutput(\"CalEvents\", Context.MODE_PRIVATE);
    ObjectOutputStream oos = new ObjectOut         


        

Answer 1

Use this method to write your Arraylist in a file

public static void write(Context context, Object nameOfClass) {
    File directory = new File(context.getFilesDir().getAbsolutePath()
            + File.separator + "serlization");
    if (!directory.exists()) {
        directory.mkdirs();
    }

    String filename = "MessgeScreenList.srl";
    ObjectOutput out = null;

    try {
        out = new ObjectOutputStream(new FileOutputStream(directory
                + File.separator + filename));
        out.writeObject(nameOfClass);
        out.close();
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

Complete example here, with Read method