PermissionActivity.java revision c961401e55d453afe48f6beb79ec1c3b1dd8b700 
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;
35import android.widget.Toast;
36
37import java.util.ArrayList;
38import java.util.Arrays;
39import java.util.List;
40
41/**
42 * Simple sample of how to use the runtime permissions APIs.
43 */
44public class PermissionActivity extends Activity implements LoaderManager.LoaderCallbacks<Cursor> {
45
46    public static final String LOG_TAG = "PermissionActivity";
47
48    private static final int CONTACTS_LOADER = 1;
49
50    private static final int EVENTS_LOADER = 2;
51
52    private static final int PERMISSIONS_REQUEST_READ_CONTACTS = 1;
53
54    private static final int PERMISSIONS_REQUEST_READ_CALENDAR = 2;
55
56    private static final int PERMISSIONS_REQUEST_ALL_PERMISSIONS = 3;
57
58    private final static String[] CONTACTS_COLUMNS = {
59            ContactsContract.Contacts.DISPLAY_NAME_PRIMARY
60    };
61
62    private final static String[] CALENDAR_COLUMNS = {
63            CalendarContract.Events.TITLE
64    };
65
66    private static final String[] CONTACTS_PROJECTION = {
67            ContactsContract.Contacts._ID,
68            ContactsContract.Contacts.DISPLAY_NAME_PRIMARY
69    };
70
71    private static final String[] EVENTS_PROJECTION = {
72            CalendarContract.Events._ID,
73            CalendarContract.Events.TITLE
74    };
75
76    private final static int[] TO_IDS = {
77            android.R.id.text1
78    };
79
80    private ListView mListView;
81
82    private CursorAdapter mContactsAdapter;
83    private CursorAdapter mEventsAdapter;
84
85    @Override
86    protected void onCreate(Bundle savedInstanceState) {
87        super.onCreate(savedInstanceState);
88        bindUi();
89    }
90
91
92    @Override
93    public boolean onCreateOptionsMenu(Menu menu) {
94        getMenuInflater().inflate(R.menu.actions, menu);
95        return true;
96    }
97
98    @Override
99    public boolean onOptionsItemSelected(MenuItem item) {
100        switch (item.getItemId()) {
101            case R.id.show_contacts: {
102                showContacts();
103                return true;
104            }
105
106            case R.id.show_events: {
107                showEvents();
108                return true;
109            }
110
111            case R.id.request_all_perms: {
112                requestPermissions();
113                return true;
114            }
115        }
116
117        return false;
118    }
119
120    @Override
121    public Loader<Cursor> onCreateLoader(int loaderId, Bundle args) {
122        switch (loaderId) {
123            case CONTACTS_LOADER: {
124                return new CursorLoader(this,
125                        ContactsContract.Contacts.CONTENT_URI,
126                        CONTACTS_PROJECTION, null, null, null);
127            }
128
129            case EVENTS_LOADER: {
130                return new CursorLoader(this,
131                        CalendarContract.Events.CONTENT_URI,
132                        EVENTS_PROJECTION, null, null, null);
133            }
134
135            default: {
136                return null;
137            }
138        }
139    }
140
141    @Override
142    public void onLoadFinished(Loader<Cursor> loader, Cursor cursor) {
143        switch (loader.getId()) {
144            case CONTACTS_LOADER: {
145                mContactsAdapter.swapCursor(cursor);
146            } break;
147
148            case EVENTS_LOADER: {
149                mEventsAdapter.swapCursor(cursor);
150            } break;
151        }
152    }
153
154    @Override
155    public void onLoaderReset(Loader<Cursor> loader) {
156        switch (loader.getId()) {
157            case CONTACTS_LOADER: {
158                mContactsAdapter.swapCursor(null);
159            } break;
160
161            case EVENTS_LOADER: {
162                mEventsAdapter.swapCursor(null);
163            } break;
164        }
165    }
166
167    @Override
168    public void onBackPressed() {
169        requestPermissions();
170    }
171
172    @Override
173    public void onRequestPermissionsResult(int requestCode, String permissions[],
174            int[] grantResults) {
175        switch (requestCode) {
176            case PERMISSIONS_REQUEST_READ_CONTACTS: {
177                if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
178                    showContacts();
179                }
180            } break;
181
182            case PERMISSIONS_REQUEST_READ_CALENDAR: {
183                if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
184                    showEvents();
185                }
186            } break;
187
188            case PERMISSIONS_REQUEST_ALL_PERMISSIONS: {
189                for (int i = 0; i < permissions.length; i++) {
190                    if (grantResults[i] == PackageManager.PERMISSION_GRANTED) {
191                        switch (permissions[i]) {
192                            case Manifest.permission.READ_CALENDAR: {
193                                Toast.makeText(this, "Granted Calendar!",
194                                        Toast.LENGTH_SHORT).show();
195                            } break;
196
197                            case Manifest.permission.READ_CONTACTS: {
198                                showContacts();
199                            } break;
200                        }
201                    }
202                }
203            } break;
204        }
205    }
206
207    private void bindUi() {
208        setContentView(R.layout.permission_activity);
209
210        mListView = (ListView) findViewById(R.id.list);
211        View emptyView = findViewById(R.id.empty_state);
212        mListView.setEmptyView(emptyView);
213
214        mContactsAdapter = new SimpleCursorAdapter(this,
215                android.R.layout.simple_list_item_1,
216                null, CONTACTS_COLUMNS, TO_IDS, 0);
217
218        mEventsAdapter = new SimpleCursorAdapter(this,
219                android.R.layout.simple_list_item_1,
220                null, CALENDAR_COLUMNS, TO_IDS, 0);
221    }
222
223    private void showContacts() {
224        if (checkSelfPermission(Manifest.permission.READ_CONTACTS)
225                != PackageManager.PERMISSION_GRANTED) {
226            requestPermissions(new String[] {Manifest.permission.READ_CONTACTS},
227                    PERMISSIONS_REQUEST_READ_CONTACTS);
228            return;
229        }
230
231        if (getLoaderManager().getLoader(CONTACTS_LOADER) == null) {
232            getLoaderManager().initLoader(CONTACTS_LOADER, null, this);
233        }
234        mListView.setAdapter(mContactsAdapter);
235    }
236
237    private void showEvents() {
238        if (checkSelfPermission(Manifest.permission.READ_CALENDAR)
239                != PackageManager.PERMISSION_GRANTED) {
240            requestPermissions(new String[]{Manifest.permission.READ_CALENDAR},
241                    PERMISSIONS_REQUEST_READ_CALENDAR);
242            return;
243        }
244
245        if (getLoaderManager().getLoader(EVENTS_LOADER) == null) {
246            getLoaderManager().initLoader(EVENTS_LOADER, null, this);
247        }
248        mListView.setAdapter(mEventsAdapter);
249    }
250
251    private void requestPermissions() {
252        List<String> permissions = new ArrayList<>();
253        if (checkSelfPermission(Manifest.permission.READ_CALENDAR)
254                != PackageManager.PERMISSION_GRANTED) {
255            permissions.add(Manifest.permission.READ_CALENDAR);
256        }
257        if (checkSelfPermission(Manifest.permission.READ_CONTACTS)
258                != PackageManager.PERMISSION_GRANTED) {
259            permissions.add(Manifest.permission.READ_CONTACTS);
260        }
261        if (!permissions.isEmpty()) {
262            requestPermissions(permissions.toArray(new String[0]),
263                    PERMISSIONS_REQUEST_ALL_PERMISSIONS);
264        }
265    }
266}
267