The file containing the source code shown below is located in the corresponding directory in <sdk>/platforms/android-<version>/samples/...
<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright (C) 2008 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
https://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<!-- This is an advanced example showing the custom preference types and manually handling
preference clicks. -->
<PreferenceScreen
xmlns:android="https://schemas.android.com/apk/res/android">
<!-- My custom preference type. This just replaces the actual widget
portion of the preference, if the whole preference wanted to be
replaced we would use the layout attribute instead of the widgetLayout
attribute. -->
<com.example.android.apis.app.MyPreference
android:key="my_preference"
android:title="@string/title_my_preference"
android:summary="@string/summary_my_preference"
android:defaultValue="100" />
<CheckBoxPreference
android:key="advanced_checkbox_preference"
android:title="@string/title_advanced_toggle_preference"
android:summaryOn="@string/summary_on_advanced_toggle_preference"
android:summaryOff="@string/summary_off_advanced_toggle_preference" />
</PreferenceScreen>
