Java tutorial
//package com.java2s; /* * Copyright (C) 2010 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 * * 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. */ import android.preference.PreferenceManager; import android.preference.PreferenceScreen; import android.support.annotation.NonNull; import java.lang.reflect.Method; public class Main { /** * Returns the root of the preference hierarchy managed by this class. * * @return The {@link android.preference.PreferenceScreen} object that is at the root of the hierarchy. */ public static PreferenceScreen getPreferenceScreen(@NonNull PreferenceManager manager) { try { Method m = PreferenceManager.class.getDeclaredMethod("getPreferenceScreen"); m.setAccessible(true); return (PreferenceScreen) m.invoke(manager); } catch (Exception e) { throw new RuntimeException(e); } } }