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      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 
     17 package com.example.android.supportpreference;
     18 
     19 import android.annotation.TargetApi;
     20 import android.app.Activity;
     21 import android.app.Fragment;
     22 import android.os.Bundle;
     23 import android.support.v14.preference.PreferenceDialogFragment;
     24 import android.support.v14.preference.PreferenceFragment;
     25 import android.support.v17.preference.LeanbackPreferenceFragment;
     26 import android.support.v17.preference.LeanbackSettingsFragment;
     27 import android.support.v7.preference.Preference;
     28 import android.support.v7.preference.PreferenceScreen;
     29 
     30 @TargetApi(17)
     31 public class FragmentSupportPreferencesLeanback extends Activity {
     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             getFragmentManager().beginTransaction().replace(android.R.id.content,
     39                     new SettingsFragment()).commit();
     40         }
     41     }
     42 
     43 //BEGIN_INCLUDE(support_fragment_leanback)
     44     public static class SettingsFragment extends LeanbackSettingsFragment {
     45         @Override
     46         public void onPreferenceStartInitialScreen() {
     47             startPreferenceFragment(new PrefsFragment());
     48         }
     49 
     50         @Override
     51         public boolean onPreferenceStartFragment(PreferenceFragment caller, Preference pref) {
     52             final Fragment f =
     53                     Fragment.instantiate(getActivity(), pref.getFragment(), pref.getExtras());
     54             f.setTargetFragment(caller, 0);
     55             if (f instanceof PreferenceFragment || f instanceof PreferenceDialogFragment) {
     56                 startPreferenceFragment(f);
     57             } else {
     58                 startImmersiveFragment(f);
     59             }
     60             return true;
     61         }
     62 
     63         @Override
     64         public boolean onPreferenceStartScreen(PreferenceFragment caller, PreferenceScreen pref) {
     65             final Fragment f = new PrefsFragment();
     66             final Bundle args = new Bundle(1);
     67             args.putString(PreferenceFragment.ARG_PREFERENCE_ROOT, pref.getKey());
     68             f.setArguments(args);
     69             startPreferenceFragment(f);
     70             return true;
     71         }
     72     }
     73 
     74     public static class PrefsFragment extends LeanbackPreferenceFragment {
     75 
     76         @Override
     77         public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
     78             // Load the preferences from an XML resource
     79             setPreferencesFromResource(R.xml.preferences, rootKey);
     80         }
     81     }
     82 //END_INCLUDE(support_fragment_leanback)
     83 
     84 }
     85