Android: Show/hide preference on checking/unchecking other CheckBoxPreference

Question

Im trying to accomplish such a thing: when I check CheckBoxPreference 'A' the other preference ('B') shows below the A, when I uncheck 'A', preference 'B' hides...

So generally speaking it should work just like dependency but not only enabling/disabling th preference B, but hiding it.

This is what i came up with:

prefA = (CheckBoxPreference)findPreference("preference_A");
prefA.setChecked(false);

prefB = findPreference("preference_B");
category.removePreference(prefB);

prefA.setOnPreferenceChangeListener(new OnPreferenceChangeListener() {

    @Override
    public boolean onPreferenceChange(Preference preference, Object newValue) {

        boolean switchedOn = (Boolean)newValue;
        if (switchedOn)
        {
            Log.d("pref_test", "prefA checked");

            category.addPreference(prefB);
        }
        else
        {
            Log.d("pref_test", "prefA UNchecked");

            prefB = findPreference("preference_B");
            category.removePreference(prefB);   
        }

        return switchedOn;  
    }
});

prefA and prefB have been defined earlier as PreferenceFragment class fields.

The problem is that it works fine only for 2 clicks and my logs say:

prefA checked
prefA UNchecked
prefA UNchecked

Like it was calling onPreferenceChangeListener twice for unchecking (obviously resulting in .removePreference(prefB) method returning null).

Any idea on solving the issue?

try returning true instead of switchedOn – cYrixmorten Jan 25 '14 at 19:29 — cYrixmorten, Jan 25 '14 at 19:29

score 4 · Accepted Answer · edited Jan 05 '15 at 12:08

Would it not work doing something like this?

prefA = (CheckBoxPreference)findPreference("preference_A");
prefA.setChecked(false);

prefB = findPreference("preference_B");
category.removePreference(prefB);

prefA.setOnPreferenceChangeListener(new OnPreferenceChangeListener() {

@Override
public boolean onPreferenceChange(Preference preference, Object newValue) {

        boolean switchedOn = (Boolean)newValue;
        if (switchedOn) {
             Log.d("pref_test", "prefA checked");

             category.addPreference(prefB);

        } else {
            Log.d("pref_test", "prefA UNchecked");

            prefB = findPreference("preference_B");
            category.removePreference(prefB);   
        }

        return true;  
    }
});

yep, that return statement was the problem (still need to findpreference though), thanks for help anyways — Bartek Lipinski, Jan 25 '14 at 20:22

Android: Show/hide preference on checking/unchecking other CheckBoxPreference

1 Answers1