How to set the Default Value of a ListPreference
Sorry my bad English.
- List item
- Retrieve the list Check if the value is null. If it is null set to the default value.
Code:
ListPreference dataPref = (ListPreference) findPreference("keyList");
if(dataPref.getValue() == null){
dataPref.setValueIndex(0); //set to index of your deafult value
}
You can set your default value by using the key like this
<string-array name="syncFrequency">
<item name="1">Block All Calls</item>
<item name="2">Block Black List</item>
<item name="3">Block Unknown Calls</item>
<item name="4">Allow White List</item>
<item name="5">Receive All Calls</item>
</string-array>
<string-array name="syncFrequencyValues">
<item name="1">Block_All_Calls</item>
<item name="2">Block_Black_List</item>
<item name="3">Block_Unknown_Calls</item>
<item name="4">Allow_White_List</item>
<item name="5">Receive_All_Calls</item>
</string-array>
<ListPreference
android:key="prefSyncFrequency"
android:entries="@array/syncFrequency"
android:summary="%s"
android:defaultValue="Block_Black_List"
android:entryValues="@array/syncFrequencyValues"
android:title="@string/call_block_options" />
You don't need to programmatically handle the default value of ListPreferences
. You can do this in xml setting file. Below is an example
<string-array name="opts">
<item>red</item>
<item>green</item>
<item>blue</item>
</string-array>
<string-array name="opts_values">
<item>1</item>
<item>2</item>
<item>3</item>
</string-array>
...
<ListPreference
android:title="Colour select"
android:summary="Select your favourite"
android:key="colour"
android:entries="@array/opts"
android:entryValues="@array/opts_values"
android:defaultValue="2" />
here I selected 2
as a default value. Remember defaultvalue
will be opts_values
element.
Have you tried:
setValueIndex(int index);