1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
/*
* Copyright (C) 2017 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.support.car.drawer;
import android.content.res.Configuration;
import android.os.Bundle;
import android.support.annotation.LayoutRes;
import android.support.annotation.Nullable;
import android.support.car.R;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.LayoutInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
/**
* Common base Activity for car apps that need to present a Drawer.
*
* <p>This Activity manages the overall layout. To use it, sub-classes need to:
*
* <ul>
* <li>Provide the root-items for the Drawer by implementing {@link #getRootAdapter()}.
* <li>Add their main content using {@link #setMainContent(int)} or {@link #setMainContent(View)}.
* They can also add fragments to the main-content container by obtaining its id using
* {@link #getContentContainerId()}
* </ul>
*
* <p>This class will take care of drawer toggling and display.
*
* <p>The rootAdapter can implement nested-navigation, in its click-handling, by passing the
* CarDrawerAdapter for the next level to
* {@link CarDrawerController#switchToAdapter(CarDrawerAdapter)}.
*
* <p>Any Activity's based on this class need to set their theme to CarDrawerActivityTheme or a
* derivative.
*/
public abstract class CarDrawerActivity extends AppCompatActivity {
private CarDrawerController mDrawerController;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.car_drawer_activity);
DrawerLayout drawerLayout = findViewById(R.id.drawer_layout);
ActionBarDrawerToggle drawerToggle = new ActionBarDrawerToggle(
this /* activity */,
drawerLayout, /* DrawerLayout object */
R.string.car_drawer_open,
R.string.car_drawer_close);
Toolbar toolbar = findViewById(R.id.car_toolbar);
setSupportActionBar(toolbar);
mDrawerController = new CarDrawerController(toolbar, drawerLayout, drawerToggle);
mDrawerController.setRootAdapter(getRootAdapter());
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setHomeButtonEnabled(true);
}
/**
* Returns the {@link CarDrawerController} that is responsible for handling events relating
* to the drawer in this Activity.
*
* @return The {@link CarDrawerController} linked to this Activity. This value will be
* {@code null} if this method is called before {@code onCreate()} has been called.
*/
@Nullable
protected CarDrawerController getDrawerController() {
return mDrawerController;
}
@Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
mDrawerController.syncState();
}
/**
* @return Adapter for root content of the Drawer.
*/
protected abstract CarDrawerAdapter getRootAdapter();
/**
* Set main content to display in this Activity. It will be added to R.id.content_frame in
* car_drawer_activity.xml. NOTE: Do not use {@link #setContentView(View)}.
*
* @param view View to display as main content.
*/
public void setMainContent(View view) {
ViewGroup parent = findViewById(getContentContainerId());
parent.addView(view);
}
/**
* Set main content to display in this Activity. It will be added to R.id.content_frame in
* car_drawer_activity.xml. NOTE: Do not use {@link #setContentView(int)}.
*
* @param resourceId Layout to display as main content.
*/
public void setMainContent(@LayoutRes int resourceId) {
ViewGroup parent = findViewById(getContentContainerId());
LayoutInflater inflater = getLayoutInflater();
inflater.inflate(resourceId, parent, true);
}
/**
* Get the id of the main content Container which is a FrameLayout. Subclasses can add their own
* content/fragments inside here.
*
* @return Id of FrameLayout where main content of the subclass Activity can be added.
*/
protected int getContentContainerId() {
return R.id.content_frame;
}
@Override
protected void onStop() {
super.onStop();
mDrawerController.closeDrawer();
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
mDrawerController.onConfigurationChanged(newConfig);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
return mDrawerController.onOptionsItemSelected(item) || super.onOptionsItemSelected(item);
}
}
|
