Question

i am writing a string to a file in android using :

BufferedWriter writer = new BufferedWriter(new FileWriter(order));
        writer.append(placedOrder);

whether i use

writer.write(placedOrder); // or
writer.append(placedOrder);

the data of the file is erased every time i run this code.
I want to add the data to the end of file.

Ex: When i run first time :

file output
My

Ex: When i run second time :

file output becomes
My
Name

Ex: When i run third time :

file output
My
Name
is

Ex: When i run fourth time :

file output
My
Name
is
Hisham.

and so on. Like having a record of all previous outputs.

Answer 1

Your current code uses FileWriter with default append mode set to false. You need to use the constructor in which you can set append to true:

public FileWriter (File file, boolean append) Since: API Level 1

Creates a FileWriter using the File file. The parameter append
determines whether or not the file is opened and appended to or just
opened and overwritten.

Parameters
file : the non-null File to write bytes to.
append : indicates whether or not to append to an existing file.