Android MultiSelectListPreference is crashing

Question

I try to use MultiSelectListPreference in my android project.

I defined all settings as you can see:

<MultiSelectListPreference
    android:key="key1"
    android:title="title"
    android:dialogTitle="title"
    android:summary="dsfsdfsf"
    android:entries="@array/entries"
    android:entryValues="@array/entryValues"
    android:persistent="true"
    android:defaultValue="@array/defaults"/>

In strings.xml:

 <string-array name="entries">
    <item>Entry1</item>
    <item>Entry2</item>
    <item>Entry3</item>
</string-array>
<string-array name="entryValues">
    <item>1</item>
    <item>2</item>
    <item>3</item>
</string-array>

<string-array name="defaults" />

I get the Error message:

Caused by: java.lang.ClassCastException: java.lang.String cannot be cast to java.util.Set at android.app.SharedPreferencesImpl.getStringSet(SharedPreferencesImpl.java:232)

What did i do wrong?

Answer 1

I solved it now. The code is correct. It was the data in the background. As soon as i deleted all data of the app including the cache, All works very well.