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;
20import android.support.v4.app.Fragment;
21import android.support.v7.app.AppCompatActivity;
22import android.support.v7.preference.PreferenceFragmentCompat;
23import android.support.v7.preference.PreferenceScreen;
24
25/**
26 * Demonstration of PreferenceFragment, showing a single fragment in an
27 * activity.
28 */
29public class FragmentSupportPreferencesCompat extends AppCompatActivity
30        implements PreferenceFragmentCompat.OnPreferenceStartScreenCallback {
31
32    @Override
33    protected void onCreate(Bundle savedInstanceState) {
34        super.onCreate(savedInstanceState);
35
36        // Display the fragment as the main content.
37        if (savedInstanceState == null) {
38            getSupportFragmentManager().beginTransaction().replace(android.R.id.content,
39                    new PrefsFragment()).commit();
40        }
41    }
42
43    @Override
44    public boolean onPreferenceStartScreen(PreferenceFragmentCompat caller, PreferenceScreen pref) {
45        final Fragment f = new PrefsFragment();
46        final Bundle args = new Bundle(1);
47        args.putString(PreferenceFragmentCompat.ARG_PREFERENCE_ROOT, pref.getKey());
48        f.setArguments(args);
49        getSupportFragmentManager().beginTransaction()
50                .replace(android.R.id.content, f)
51                .addToBackStack(null)
52                .commit();
53        return true;
54    }
55
56    //BEGIN_INCLUDE(support_fragment_compat)
57    public static class PrefsFragment extends PreferenceFragmentCompat {
58
59        @Override
60        public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
61            // Load the preferences from an XML resource
62            setPreferencesFromResource(R.xml.preferences, rootKey);
63        }
64    }
65//END_INCLUDE(support_fragment_compat)
66}
67