NfcManager.java revision bb951c893973691554f49d2e725985125f866b27 
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 * @see Context#getSystemService
32 * @see NfcAdapter#getDefaultAdapter(android.content.Context)
33 */
34public final class NfcManager {
35    private final NfcAdapter mAdapter;
36
37    /**
38     * @hide
39     */
40    public NfcManager(Context context) {
41        NfcAdapter adapter;
42        context = context.getApplicationContext();
43        try {
44            adapter = NfcAdapter.getNfcAdapter(context);
45        } catch (UnsupportedOperationException e) {
46            adapter = null;
47        }
48        mAdapter = adapter;
49    }
50
51    /**
52     * Get the default NFC Adapter for this device.
53     *
54     * @return the default NFC Adapter
55     */
56    public NfcAdapter getDefaultAdapter() {
57        return mAdapter;
58    }
59}
60