android - Shared preference with session timeout using countdowntimer -


i want using startcountdown timer method change preference value not worked. 

private void startcountdowntimer(final string judul){         countdowntimer = new countdowntimer(120000, 1000) {              public void ontick(long millisuntilfinished) {                 sharedpreferences pref = getactivity().getsharedpreferences("data", context.mode_private);                 sharedpreferences.editor editor = pref.edit();                 editor.putstring("click"+judul, "1");              }              public void onfinish() {                 sharedpreferences pref = getactivity().getsharedpreferences("data", context.mode_private);                 sharedpreferences.editor editor = pref.edit();                 editor.putstring("click"+judul, "0");             }         }.start();     }

can use method ontick , onfinish change preference ?? want make session timeout in android actually. im using countdown timer manipulate it.

use more easy

    sharedpreferences pref = getactivity().getsharedpreferences("data", context.mode_private);     pref.edit().putstring("click"+judul, "1").commit();

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