Android Activity Life-cycle

Question

I need to save my filters after closing Activity . I'm using onSaveInstanceState() to achieve it.

protected void onSaveInstanceState(Bundle savedInstanceState) {
    super.onSaveInstanceState(savedInstanceState);
    savedInstanceState.putInt("age", sbAge.getProgress());
    savedInstanceState.putInt("age", spMyStatus.getSelectedItemPosition());
    if(rbMaleMe.isChecked())
        savedInstanceState.putInt("sex", 1);
    else if(rbFemaleMe.isChecked())
        savedInstanceState.putInt("sex", 2);
}
`

In onRestoreInstanceState() method:

protected void onRestoreInstanceState(Bundle savedInstanceState) {
    super.onRestoreInstanceState(savedInstanceState);
    sbAge.setProgress(savedInstanceState.getInt("age"));
    spMyStatus.setSelection(savedInstanceState.getInt("status"));
    if(savedInstanceState.getInt("sex") == 1)
        rbMaleMe.isChecked();
    else if (savedInstanceState.getInt("sex") == 2)
        rbFemaleMe.isChecked();
}

In onCreate() method:

if (savedInstanceState != null)
{
    savedInstanceState.getInt("age");
    savedInstanceState.getInt("sex");
    savedInstanceState.getInt("status");
}

but it doesn't work. Just shows empty views when I close and restart the activity.

onClick() :

switch (v.getId()) { 
    case R.id.btnSaveInfo: 
        onStop(); 
        finish(); 
        break;
}

Answer 1

onSaveInstanceState() is called when the OS kills your Activity (to reclaim resources for example). It will not be called when you explicitly call finish() .

If you would still like to persist your values, you could use SharedPreferences .

(on a side note, do not call onStop() explicitly)