1 /*
2  * Copyright (C) 2014 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.supportv7.app;
18 
19 import android.content.res.Configuration;
20 import android.os.Bundle;
21 import android.preference.PreferenceActivity;
22 import android.support.annotation.LayoutRes;
23 import android.support.annotation.Nullable;
24 import android.support.v7.app.ActionBar;
25 import android.support.v7.app.AppCompatDelegate;
26 import android.support.v7.widget.Toolbar;
27 import android.view.MenuInflater;
28 import android.view.View;
29 import android.view.ViewGroup;
30 
31 /**
32  * A {@link android.preference.PreferenceActivity} which implements and proxies the necessary calls
33  * to be used with AppCompat.
34  *
35  * This technique can be used with an {@link android.app.Activity} class, not just
36  * {@link android.preference.PreferenceActivity}.
37  */
38 public abstract class AppCompatPreferenceActivity extends PreferenceActivity {
39 
40     private AppCompatDelegate mDelegate;
41 
42     @Override
onCreate(Bundle savedInstanceState)43     protected void onCreate(Bundle savedInstanceState) {
44         getDelegate().installViewFactory();
45         getDelegate().onCreate(savedInstanceState);
46         super.onCreate(savedInstanceState);
47     }
48 
49     @Override
onPostCreate(Bundle savedInstanceState)50     protected void onPostCreate(Bundle savedInstanceState) {
51         super.onPostCreate(savedInstanceState);
52         getDelegate().onPostCreate(savedInstanceState);
53     }
54 
getSupportActionBar()55     public ActionBar getSupportActionBar() {
56         return getDelegate().getSupportActionBar();
57     }
58 
setSupportActionBar(@ullable Toolbar toolbar)59     public void setSupportActionBar(@Nullable Toolbar toolbar) {
60         getDelegate().setSupportActionBar(toolbar);
61     }
62 
63     @Override
getMenuInflater()64     public MenuInflater getMenuInflater() {
65         return getDelegate().getMenuInflater();
66     }
67 
68     @Override
setContentView(@ayoutRes int layoutResID)69     public void setContentView(@LayoutRes int layoutResID) {
70         getDelegate().setContentView(layoutResID);
71     }
72 
73     @Override
setContentView(View view)74     public void setContentView(View view) {
75         getDelegate().setContentView(view);
76     }
77 
78     @Override
setContentView(View view, ViewGroup.LayoutParams params)79     public void setContentView(View view, ViewGroup.LayoutParams params) {
80         getDelegate().setContentView(view, params);
81     }
82 
83     @Override
addContentView(View view, ViewGroup.LayoutParams params)84     public void addContentView(View view, ViewGroup.LayoutParams params) {
85         getDelegate().addContentView(view, params);
86     }
87 
88     @Override
onPostResume()89     protected void onPostResume() {
90         super.onPostResume();
91         getDelegate().onPostResume();
92     }
93 
94     @Override
onTitleChanged(CharSequence title, int color)95     protected void onTitleChanged(CharSequence title, int color) {
96         super.onTitleChanged(title, color);
97         getDelegate().setTitle(title);
98     }
99 
100     @Override
onConfigurationChanged(Configuration newConfig)101     public void onConfigurationChanged(Configuration newConfig) {
102         super.onConfigurationChanged(newConfig);
103         getDelegate().onConfigurationChanged(newConfig);
104     }
105 
106     @Override
onStop()107     protected void onStop() {
108         super.onStop();
109         getDelegate().onStop();
110     }
111 
112     @Override
onDestroy()113     protected void onDestroy() {
114         super.onDestroy();
115         getDelegate().onDestroy();
116     }
117 
invalidateOptionsMenu()118     public void invalidateOptionsMenu() {
119         getDelegate().invalidateOptionsMenu();
120     }
121 
getDelegate()122     private AppCompatDelegate getDelegate() {
123         if (mDelegate == null) {
124             mDelegate = AppCompatDelegate.create(this, null);
125         }
126         return mDelegate;
127     }
128 }