Alexander Lucas | c9605c1 | 2014-02-06 14:42:27 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2013 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 com.example.android.cardreader; |
| 18 | |
| 19 | import android.app.Activity; |
| 20 | import android.nfc.NfcAdapter; |
| 21 | import android.os.Bundle; |
| 22 | import android.support.v4.app.Fragment; |
| 23 | import android.view.LayoutInflater; |
| 24 | import android.view.View; |
| 25 | import android.view.ViewGroup; |
| 26 | import android.widget.TextView; |
| 27 | |
| 28 | import com.example.android.common.logger.Log; |
| 29 | |
| 30 | /** |
| 31 | * Generic UI for sample discovery. |
| 32 | */ |
| 33 | public class CardReaderFragment extends Fragment implements LoyaltyCardReader.AccountCallback { |
| 34 | |
| 35 | public static final String TAG = "CardReaderFragment"; |
| 36 | // Recommend NfcAdapter flags for reading from other Android devices. Indicates that this |
| 37 | // activity is interested in NFC-A devices (including other Android devices), and that the |
| 38 | // system should not check for the presence of NDEF-formatted data (e.g. Android Beam). |
| 39 | public static int READER_FLAGS = |
| 40 | NfcAdapter.FLAG_READER_NFC_A | NfcAdapter.FLAG_READER_SKIP_NDEF_CHECK; |
| 41 | public LoyaltyCardReader mLoyaltyCardReader; |
| 42 | private TextView mAccountField; |
| 43 | |
| 44 | /** Called when sample is created. Displays generic UI with welcome text. */ |
| 45 | @Override |
| 46 | public void onCreate(Bundle savedInstanceState) { |
| 47 | super.onCreate(savedInstanceState); |
| 48 | } |
| 49 | |
| 50 | @Override |
| 51 | public View onCreateView(LayoutInflater inflater, ViewGroup container, |
| 52 | Bundle savedInstanceState) { |
| 53 | // Inflate the layout for this fragment |
| 54 | View v = inflater.inflate(R.layout.main_fragment, container, false); |
| 55 | if (v != null) { |
| 56 | mAccountField = (TextView) v.findViewById(R.id.card_account_field); |
| 57 | mAccountField.setText("Waiting..."); |
| 58 | |
| 59 | mLoyaltyCardReader = new LoyaltyCardReader(this); |
| 60 | |
| 61 | // Disable Android Beam and register our card reader callback |
| 62 | enableReaderMode(); |
| 63 | } |
| 64 | |
| 65 | return v; |
| 66 | } |
| 67 | |
| 68 | @Override |
| 69 | public void onPause() { |
| 70 | super.onPause(); |
| 71 | disableReaderMode(); |
| 72 | } |
| 73 | |
| 74 | @Override |
| 75 | public void onResume() { |
| 76 | super.onResume(); |
| 77 | enableReaderMode(); |
| 78 | } |
| 79 | |
| 80 | private void enableReaderMode() { |
| 81 | Log.i(TAG, "Enabling reader mode"); |
| 82 | Activity activity = getActivity(); |
| 83 | NfcAdapter nfc = NfcAdapter.getDefaultAdapter(activity); |
| 84 | if (nfc != null) { |
| 85 | nfc.enableReaderMode(activity, mLoyaltyCardReader, READER_FLAGS, null); |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | private void disableReaderMode() { |
| 90 | Log.i(TAG, "Disabling reader mode"); |
| 91 | Activity activity = getActivity(); |
| 92 | NfcAdapter nfc = NfcAdapter.getDefaultAdapter(activity); |
| 93 | if (nfc != null) { |
| 94 | nfc.disableReaderMode(activity); |
| 95 | } |
| 96 | } |
| 97 | |
| 98 | @Override |
| 99 | public void onAccountReceived(final String account) { |
| 100 | // This callback is run on a background thread, but updates to UI elements must be performed |
| 101 | // on the UI thread. |
| 102 | getActivity().runOnUiThread(new Runnable() { |
| 103 | @Override |
| 104 | public void run() { |
| 105 | mAccountField.setText(account); |
| 106 | } |
| 107 | }); |
| 108 | } |
| 109 | } |