Preference

[fahimeh hashemian]

Hi
I didnt understand PreferenceScreen. I searched and i read android site but i didnt understand that what is PreferenceScreen and what is Preference?
In this code, we use android key, what does it do? what is this?

<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen
xmlns:android="http://schemas.android.com/apk/res/android">
<CheckBoxPreference
android:key="music"
android:title="@string/music_title"
android:summary="@string/music_summary"
android:defaultValue="true" />
<CheckBoxPreference
android:key="hints"
android:title="@string/hints_title"
android:summary="@string/hints_summary"
android:defaultValue="true" />
</PreferenceScreen>

If you can please help me.
Cheers.

[Ulf Dittmer]

This seems to be a fairly complete introduction to the subject: http://www.kaloer.com/android-preferences. I found it by searching for "introduction android preferences".