1/* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License 15 */ 16 17package com.example.android.supportpreference; 18 19import android.os.Bundle; 20 21import androidx.appcompat.app.AppCompatActivity; 22import androidx.fragment.app.Fragment; 23import androidx.preference.PreferenceFragmentCompat; 24import androidx.preference.PreferenceScreen; 25 26/** 27 * Demonstration of PreferenceFragment, showing a single fragment in an 28 * activity. 29 */ 30public class FragmentSupportPreferencesCompat extends AppCompatActivity 31 implements PreferenceFragmentCompat.OnPreferenceStartScreenCallback { 32 33 @Override 34 protected void onCreate(Bundle savedInstanceState) { 35 super.onCreate(savedInstanceState); 36 37 // Display the fragment as the main content. 38 if (savedInstanceState == null) { 39 getSupportFragmentManager().beginTransaction().replace(android.R.id.content, 40 new PrefsFragment()).commit(); 41 } 42 } 43 44 @Override 45 public boolean onPreferenceStartScreen(PreferenceFragmentCompat caller, PreferenceScreen pref) { 46 final Fragment f = new PrefsFragment(); 47 final Bundle args = new Bundle(1); 48 args.putString(PreferenceFragmentCompat.ARG_PREFERENCE_ROOT, pref.getKey()); 49 f.setArguments(args); 50 getSupportFragmentManager().beginTransaction() 51 .replace(android.R.id.content, f) 52 .addToBackStack(null) 53 .commit(); 54 return true; 55 } 56 57 //BEGIN_INCLUDE(support_fragment_compat) 58 public static class PrefsFragment extends PreferenceFragmentCompat { 59 60 @Override 61 public void onCreatePreferences(Bundle savedInstanceState, String rootKey) { 62 // Load the preferences from an XML resource 63 setPreferencesFromResource(R.xml.preferences, rootKey); 64 } 65 } 66//END_INCLUDE(support_fragment_compat) 67} 68