The file containing the source code shown below is located in the corresponding directory in <sdk>/samples/android-<version>/...
<?xml version="1.0" encoding="utf-8"?> <!-- Copyright (C) 2008 The Android开源工程 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 http://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 a primitive example showing how some preferences can depend on other preferences. --> <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"> <PreferenceCategory android:title="@string/example_preference_dependency"> <CheckBoxPreference android:key="wifi" android:title="@string/title_wifi" /> <EditTextPreference android:layout="?android:attr/preferenceLayoutChild" android:title="@string/title_wifi_settings" android:dependency="wifi" /> </PreferenceCategory> </PreferenceScreen>