2 * Copyright (C) 2016 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 package com.android.settingslib.core.lifecycle;
19 import static androidx.lifecycle.Lifecycle.Event.ON_CREATE;
20 import static androidx.lifecycle.Lifecycle.Event.ON_DESTROY;
21 import static androidx.lifecycle.Lifecycle.Event.ON_PAUSE;
22 import static androidx.lifecycle.Lifecycle.Event.ON_RESUME;
23 import static androidx.lifecycle.Lifecycle.Event.ON_START;
24 import static androidx.lifecycle.Lifecycle.Event.ON_STOP;
26 import android.annotation.CallSuper;
27 import android.content.Context;
28 import android.os.Bundle;
29 import android.view.Menu;
30 import android.view.MenuInflater;
31 import android.view.MenuItem;
33 import androidx.fragment.app.Fragment;
34 import androidx.lifecycle.LifecycleOwner;
36 public class ObservableFragment extends Fragment implements LifecycleOwner {
38 private final Lifecycle mLifecycle = new Lifecycle(this);
40 public Lifecycle getSettingsLifecycle() {
46 public void onAttach(Context context) {
47 super.onAttach(context);
48 mLifecycle.onAttach(context);
53 public void onCreate(Bundle savedInstanceState) {
54 mLifecycle.onCreate(savedInstanceState);
55 mLifecycle.handleLifecycleEvent(ON_CREATE);
56 super.onCreate(savedInstanceState);
61 public void onSaveInstanceState(Bundle outState) {
62 super.onSaveInstanceState(outState);
63 mLifecycle.onSaveInstanceState(outState);
68 public void onStart() {
69 mLifecycle.handleLifecycleEvent(ON_START);
75 public void onResume() {
76 mLifecycle.handleLifecycleEvent(ON_RESUME);
82 public void onPause() {
83 mLifecycle.handleLifecycleEvent(ON_PAUSE);
89 public void onStop() {
90 mLifecycle.handleLifecycleEvent(ON_STOP);
96 public void onDestroy() {
97 mLifecycle.handleLifecycleEvent(ON_DESTROY);
103 public void onCreateOptionsMenu(final Menu menu, final MenuInflater inflater) {
104 mLifecycle.onCreateOptionsMenu(menu, inflater);
105 super.onCreateOptionsMenu(menu, inflater);
110 public void onPrepareOptionsMenu(final Menu menu) {
111 mLifecycle.onPrepareOptionsMenu(menu);
112 super.onPrepareOptionsMenu(menu);
117 public boolean onOptionsItemSelected(final MenuItem menuItem) {
118 boolean lifecycleHandled = mLifecycle.onOptionsItemSelected(menuItem);
119 if (!lifecycleHandled) {
120 return super.onOptionsItemSelected(menuItem);
122 return lifecycleHandled;