hi all, in my project there are lots of screens with edit box and checkbox,the user should select the options and write abt the particular product in those screen,my task is to collect all the data from all the screen and store it in a fille...can any one please tell me how to do it

you can create a file and append the data collected every time :

FileOutputStream os = context.openFileOutput(YOUR_LOCAL_FILENAME, Context.MODE_PRIVATE);
os.write(buffer,0,offset);

or you can just use SqlLite db, many examples can found on this site