creating a text file and saving data in android -

i new programming android apps.

in following code, want take input user through number of edittexts , save them file. use android studio , after giving inputs, checked file , empty. try display contents , still no output. wrong code?

please me.

public class user extends activity {  @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_user);      nextclick(); }  public void nextclick() {     final context context = this;     button next =(button) findviewbyid(r.id.usernext);     next.setonclicklistener(new view.onclicklistener() {        @override        public void onclick(view v) {            try {                edittext e1 = (edittext) findviewbyid(r.id.name);                edittext e2 = (edittext) findviewbyid(r.id.designation);                edittext e3 = (edittext) findviewbyid(r.id.orgname);                edittext e4 = (edittext) findviewbyid(r.id.address);                edittext e5 = (edittext) findviewbyid(r.id.city);                edittext e6 = (edittext) findviewbyid(r.id.state);                edittext e7 = (edittext) findviewbyid(r.id.zip);                fileoutputstream fos = openfileoutput("data.txt", context.mode_world_writeable);                outputstreamwriter osw = new outputstreamwriter(fos);                 osw.write(e1.tostring());                 fos.flush();                fos.close();            }            catch(exception e) {            }             try                   {               fileinputstream fis = new fileinputstream("data.txt");                 while(fis.read()!=-1)                {                    system.out.println((char)fis.read());                }             }            catch(exception e)            {             }            intent intent3 = new intent(context,com.example.cheruvu.rs.user2.class);            startactivity(intent3);        }    }); }  } 

you need gettext() edittext fields when writing file , shown below

osw.write(e1.gettext().tostring());