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
17package android.nfc;
18
19import 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 *
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 *
37 * @see Context#getSystemService
38 * @see NfcAdapter#getDefaultAdapter(android.content.Context)
39 */
40public final class NfcManager {
41    private final NfcAdapter mAdapter;
42
43    /**
44     * @hide
45     */
46    public NfcManager(Context context) {
47        NfcAdapter adapter;
48        context = context.getApplicationContext();
49        if (context == null) {
50            throw new IllegalArgumentException(
51                    "context not associated with any application (using a mock context?)");
52        }
53        try {
54            adapter = NfcAdapter.getNfcAdapter(context);
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}
70