ClassCastException when setting default values for support library preference

Question

I have a custom preference, which extends from android.support.v7.preference.EditTextPreference . Everything works fine, except when I call

PreferenceManager.setDefaultValues(this, R.xml.preferences, false);

which causes the app to crash with Caused by: java.lang.ClassCastException: com.my.project.EditTextPreferenceWithSummary cannot be cast to android.preference.Preference on the above line.

My custom class is a simple extension of android.support.v7.preference.EditTextPreference :

public class EditTextPreferenceWithSummary extends EditTextPreference

So how can I call setDefaultValues() and avoid the ClassCastException ?

Answer 1

For me, the problem was that the wrong version of PerformanceManager was imported into my classes. The import must be updated to reference the v7.performance.PerformanceManager.