안드로이드 스튜디오 shared preferences 예시(뒤로가기 저장)

선언

EditText et_save;
String shared = "file";

 

 

@Override//종료시 값 저장
protected void onDestroy() {
super.onDestroy();
SharedPreferences sharedPreferences = getSharedPreferences(shared,0);
SharedPreferences.Editor editor = sharedPreferences.edit();
String value = et_save.getText().toString();
editor.putString("힌트",value);
editor.commit();

}

 

시작

et_save = (EditText)findViewById(R.id.et_save);
//재 시작시 저장된 값 불러오기
SharedPreferences sharedPreferences = getSharedPreferences(shared,0);
String value = sharedPreferences.getString("힌트","");
et_save.setText(value);