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.app.Activity; import android.preference.PreferenceManager; import android.support.annotation.NonNull; import java.lang.reflect.Constructor; public class Main { @NonNull public static PreferenceManager newInstance(@NonNull Activity activity, int firstRequestCode) { try { Constructor<PreferenceManager> c = PreferenceManager.class.getDeclaredConstructor(Activity.class, int.class); c.setAccessible(true); return c.newInstance(activity, firstRequestCode); } catch (Exception e) { throw new RuntimeException(e); } } }