1 /* 2 * Copyright (C) 2011 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 /** 20 * Wraps information associated with any NFC event. 21 * 22 * <p>Immutable object, with direct access to the (final) fields. 23 * 24 * <p>An {@link NfcEvent} object is usually included in callbacks from 25 * {@link NfcAdapter}. Check the documentation of the callback to see 26 * which fields may be set. 27 * 28 * <p>This wrapper object is used (instead of parameters 29 * in the callback) because it allows new fields to be added without breaking 30 * API compatibility. 31 * 32 * @see NfcAdapter.OnNdefPushCompleteCallback#onNdefPushComplete 33 * @see NfcAdapter.CreateNdefMessageCallback#createNdefMessage 34 */ 35 public final class NfcEvent { 36 /** 37 * The {@link NfcAdapter} associated with the NFC event. 38 */ 39 public final NfcAdapter nfcAdapter; 40 41 /** 42 * The major LLCP version number of the peer associated with the NFC event. 43 */ 44 public final int peerLlcpMajorVersion; 45 46 /** 47 * The minor LLCP version number of the peer associated with the NFC event. 48 */ 49 public final int peerLlcpMinorVersion; 50 NfcEvent(NfcAdapter nfcAdapter, byte peerLlcpVersion)51 NfcEvent(NfcAdapter nfcAdapter, byte peerLlcpVersion) { 52 this.nfcAdapter = nfcAdapter; 53 this.peerLlcpMajorVersion = (peerLlcpVersion & 0xF0) >> 4; 54 this.peerLlcpMinorVersion = peerLlcpVersion & 0x0F; 55 } 56 } 57