Question

如何隐藏Preference

Answer 1

((PreferenceGroup) findPreference("category_foo")).removePreference(p);

实例：
XML:
<PreferenceScreen
xmlns:android="">

<PreferenceCategory
android:key="category_foo"
android:title="foo">

<CheckBoxPreference
android:key="grok" />

...

Code:
Preference p = findPreference("grok");
// removing Preference
((PreferenceGroup) findPreference("category_foo")).removePreference(p);

如果要删除整个preferenceCategory,最后一句就可改成：((PreferenceGroup) findPreference("category_foo")).removeAll()；