Nick Pelly | 50b4d8f | 2010-12-07 22:40:28 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2010 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 android.nfc; |
| 18 | |
| 19 | import android.content.Context; |
| 20 | |
| 21 | /** |
| 22 | * High level manager used to obtain an instance of an {@link NfcAdapter}. |
| 23 | * <p> |
| 24 | * Use {@link android.content.Context#getSystemService(java.lang.String)} |
| 25 | * with {@link Context#NFC_SERVICE} to create an {@link NfcManager}, |
| 26 | * then call {@link #getDefaultAdapter} to obtain the {@link NfcAdapter}. |
| 27 | * <p> |
| 28 | * Alternately, you can just call the static helper |
| 29 | * {@link NfcAdapter#getDefaultAdapter(android.content.Context)}. |
| 30 | * |
Joe Fernandez | 3aef8e1d | 2011-12-20 10:38:34 -0800 | [diff] [blame] | 31 | * <div class="special reference"> |
| 32 | * <h3>Developer Guides</h3> |
| 33 | * <p>For more information about using NFC, read the |
| 34 | * <a href="{@docRoot}guide/topics/nfc/index.html">Near Field Communication</a> developer guide.</p> |
| 35 | * </div> |
| 36 | * |
Nick Pelly | 50b4d8f | 2010-12-07 22:40:28 -0800 | [diff] [blame] | 37 | * @see Context#getSystemService |
| 38 | * @see NfcAdapter#getDefaultAdapter(android.content.Context) |
| 39 | */ |
| 40 | public final class NfcManager { |
| 41 | private final NfcAdapter mAdapter; |
| 42 | |
| 43 | /** |
| 44 | * @hide |
| 45 | */ |
| 46 | public NfcManager(Context context) { |
| 47 | NfcAdapter adapter; |
Jeff Hamilton | bb951c8 | 2011-11-08 16:55:13 -0600 | [diff] [blame] | 48 | context = context.getApplicationContext(); |
Nick Pelly | b04cce0 | 2011-11-21 17:02:02 -0800 | [diff] [blame] | 49 | if (context == null) { |
| 50 | throw new IllegalArgumentException( |
| 51 | "context not associated with any application (using a mock context?)"); |
| 52 | } |
Nick Pelly | 50b4d8f | 2010-12-07 22:40:28 -0800 | [diff] [blame] | 53 | try { |
Jeff Hamilton | bb951c8 | 2011-11-08 16:55:13 -0600 | [diff] [blame] | 54 | adapter = NfcAdapter.getNfcAdapter(context); |
Nick Pelly | 50b4d8f | 2010-12-07 22:40:28 -0800 | [diff] [blame] | 55 | } catch (UnsupportedOperationException e) { |
| 56 | adapter = null; |
| 57 | } |
| 58 | mAdapter = adapter; |
| 59 | } |
| 60 | |
| 61 | /** |
| 62 | * Get the default NFC Adapter for this device. |
| 63 | * |
| 64 | * @return the default NFC Adapter |
| 65 | */ |
| 66 | public NfcAdapter getDefaultAdapter() { |
| 67 | return mAdapter; |
| 68 | } |
| 69 | } |