1 /* 2 * Copyright (C) 2015 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.android.tv.settings; 18 19 import android.app.Fragment; 20 import android.support.v14.preference.PreferenceDialogFragment; 21 import android.support.v14.preference.PreferenceFragment; 22 import android.support.v17.preference.LeanbackSettingsFragment; 23 import android.support.v7.preference.Preference; 24 import android.support.v7.preference.PreferenceScreen; 25 26 /** 27 * Base class for settings fragments. Handles launching fragments and dialogs in a reasonably 28 * generic way. Subclasses should only override onPreferenceStartInitialScreen. 29 */ 30 31 public abstract class BaseSettingsFragment extends LeanbackSettingsFragment { 32 @Override onPreferenceStartFragment(PreferenceFragment caller, Preference pref)33 public final boolean onPreferenceStartFragment(PreferenceFragment caller, Preference pref) { 34 final Fragment f = 35 Fragment.instantiate(getActivity(), pref.getFragment(), pref.getExtras()); 36 f.setTargetFragment(caller, 0); 37 if (f instanceof PreferenceFragment || f instanceof PreferenceDialogFragment) { 38 startPreferenceFragment(f); 39 } else { 40 startImmersiveFragment(f); 41 } 42 return true; 43 } 44 45 @Override onPreferenceStartScreen(PreferenceFragment caller, PreferenceScreen pref)46 public final boolean onPreferenceStartScreen(PreferenceFragment caller, PreferenceScreen pref) { 47 return false; 48 } 49 } 50