PermissionActivity.java revision 826aa7f01d059b6764002fa0fba236d7aeafee39 
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
17package foo.bar.permission;
18
19import android.Manifest;
20import android.app.Activity;
21import android.app.LoaderManager;
22import android.content.CursorLoader;
23import android.content.Loader;
24import android.content.pm.PackageManager;
25import android.database.Cursor;
26import android.os.Bundle;
27import android.provider.CalendarContract;
28import android.provider.ContactsContract;
29import android.view.Menu;
30import android.view.MenuItem;
31import android.view.View;
32import android.widget.CursorAdapter;
33import android.widget.ListView;
34import android.widget.SimpleCursorAdapter;
35
36/**
37 * Simple sample of how to use the runtime permissions APIs.
38 */
39public class PermissionActivity extends Activity implements LoaderManager.LoaderCallbacks<Cursor> {
40
41    public static final String LOG_TAG = "PermissionActivity";
42
43    private static final int CONTACTS_LOADER = 1;
44
45    private static final int EVENTS_LOADER = 2;
46
47    private static final int PERMISSIONS_REQUEST_READ_CONTACTS = 1;
48
49    private static final int PERMISSIONS_REQUEST_READ_CALENDAR = 2;
50
51    private static final int PERMISSIONS_REQUEST_ALL_PERMISSIONS = 3;
52
53    private final static String[] CONTACTS_COLUMNS = {
54            ContactsContract.Contacts.DISPLAY_NAME_PRIMARY
55    };
56
57    private final static String[] CALENDAR_COLUMNS = {
58            CalendarContract.Events.TITLE
59    };
60
61    private static final String[] CONTACTS_PROJECTION = {
62            ContactsContract.Contacts._ID,
63            ContactsContract.Contacts.DISPLAY_NAME_PRIMARY
64    };
65
66    private static final String[] EVENTS_PROJECTION = {
67            CalendarContract.Events._ID,
68            CalendarContract.Events.TITLE
69    };
70
71    private final static int[] TO_IDS = {
72            android.R.id.text1
73    };
74
75    private ListView mListView;
76
77    private CursorAdapter mContactsAdapter;
78    private CursorAdapter mEventsAdapter;
79
80    @Override
81    protected void onCreate(Bundle savedInstanceState) {
82        super.onCreate(savedInstanceState);
83        bindUi();
84    }
85
86
87    @Override
88    public boolean onCreateOptionsMenu(Menu menu) {
89        getMenuInflater().inflate(foo.bar.permission2.R.menu.actions, menu);
90        return true;
91    }
92
93    @Override
94    public boolean onOptionsItemSelected(MenuItem item) {
95        switch (item.getItemId()) {
96            case foo.bar.permission2.R.id.show_contacts: {
97                showContacts();
98                return true;
99            }
100
101            case foo.bar.permission2.R.id.show_events: {
102                showEvents();
103                return true;
104            }
105
106            case foo.bar.permission2.R.id.request_all_perms: {
107                requestPermissions();
108                return true;
109            }
110        }
111
112        return false;
113    }
114
115    @Override
116    public Loader<Cursor> onCreateLoader(int loaderId, Bundle args) {
117        switch (loaderId) {
118            case CONTACTS_LOADER: {
119                return new CursorLoader(this,
120                        ContactsContract.Contacts.CONTENT_URI,
121                        CONTACTS_PROJECTION, null, null, null);
122            }
123
124            case EVENTS_LOADER: {
125                return new CursorLoader(this,
126                        CalendarContract.Events.CONTENT_URI,
127                        EVENTS_PROJECTION, null, null, null);
128            }
129
130            default: {
131                return null;
132            }
133        }
134    }
135
136    @Override
137    public void onLoadFinished(Loader<Cursor> loader, Cursor cursor) {
138        switch (loader.getId()) {
139            case CONTACTS_LOADER: {
140                mContactsAdapter.swapCursor(cursor);
141            } break;
142
143            case EVENTS_LOADER: {
144                mEventsAdapter.swapCursor(cursor);
145            } break;
146        }
147    }
148
149    @Override
150    public void onLoaderReset(Loader<Cursor> loader) {
151        switch (loader.getId()) {
152            case CONTACTS_LOADER: {
153                mContactsAdapter.swapCursor(null);
154            } break;
155
156            case EVENTS_LOADER: {
157                mEventsAdapter.swapCursor(null);
158            } break;
159        }
160    }
161
162    @Override
163    public void onRequestPermissionsResult(int requestCode, String permissions[],
164            int[] grantResults) {
165        switch (requestCode) {
166            case PERMISSIONS_REQUEST_READ_CONTACTS: {
167                if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
168                    showContacts();
169                }
170            } break;
171
172            case PERMISSIONS_REQUEST_READ_CALENDAR: {
173                if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
174                    showEvents();
175                }
176            } break;
177        }
178    }
179
180    private void bindUi() {
181        setContentView(foo.bar.permission2.R.layout.permission_activity);
182
183        mListView = (ListView) findViewById(foo.bar.permission2.R.id.list);
184        View emptyView = findViewById(foo.bar.permission2.R.id.empty_state);
185        mListView.setEmptyView(emptyView);
186
187        mContactsAdapter = new SimpleCursorAdapter(this,
188                android.R.layout.simple_list_item_1,
189                null, CONTACTS_COLUMNS, TO_IDS, 0);
190
191        mEventsAdapter = new SimpleCursorAdapter(this,
192                android.R.layout.simple_list_item_1,
193                null, CALENDAR_COLUMNS, TO_IDS, 0);
194    }
195
196    private void showContacts() {
197        if (checkSelfPermission(Manifest.permission.READ_CONTACTS)
198                != PackageManager.PERMISSION_GRANTED) {
199            requestPermissions(new String[] {Manifest.permission.READ_CONTACTS},
200                    PERMISSIONS_REQUEST_READ_CONTACTS);
201            return;
202        }
203
204        if (getLoaderManager().getLoader(CONTACTS_LOADER) == null) {
205            getLoaderManager().initLoader(CONTACTS_LOADER, null, this);
206        }
207        mListView.setAdapter(mContactsAdapter);
208    }
209
210    private void showEvents() {
211        if (checkSelfPermission(Manifest.permission.READ_CALENDAR)
212                != PackageManager.PERMISSION_GRANTED) {
213            requestPermissions(new String[]{Manifest.permission.READ_CALENDAR},
214                    PERMISSIONS_REQUEST_READ_CALENDAR);
215            return;
216        }
217
218        if (getLoaderManager().getLoader(EVENTS_LOADER) == null) {
219            getLoaderManager().initLoader(EVENTS_LOADER, null, this);
220        }
221        mListView.setAdapter(mEventsAdapter);
222    }
223
224    private void requestPermissions() {
225        if (checkSelfPermission(Manifest.permission.READ_CALENDAR)
226                != PackageManager.PERMISSION_GRANTED
227            || checkSelfPermission(Manifest.permission.READ_CONTACTS)
228                != PackageManager.PERMISSION_GRANTED) {
229            String[] permissions = new String[]{
230                    Manifest.permission.READ_CONTACTS,
231                    Manifest.permission.READ_CALENDAR
232            };
233            requestPermissions(permissions, PERMISSIONS_REQUEST_ALL_PERMISSIONS);
234        }
235    }
236}
237