1 //实现两部Android手机文本传输
2 //4.0以上
3 //方法：将两部安卓手机背对背，一部手机输入文本，点击屏幕发送，另一部接收显示
4
5 public class MainActivity extends Activity implements
6 CreateNdefMessageCallback, OnNdefPushCompleteCallback {
7
8 private NfcAdapter mnfcAdapter;
9 private EditText mBeamText;
10 private PendingIntent mPendingIntent;
11
12 @Override
13 protected void onCreate(Bundle savedInstanceState) {
14 super.onCreate(savedInstanceState);
15 setContentView(R.layout.fragment_main);
16 mBeamText = (EditText) findViewById(R.id.editText1);
17 mnfcAdapter = mnfcAdapter.getDefaultAdapter(this);
18 mPendingIntent = PendingIntent.getActivity(this, 0, new Intent(this,
19 getClass()), 0);
20
21 // 指定要传输文本的回调
22 mnfcAdapter.setNdefPushMessageCallback(this, this);
23 // 传输完成调用
24 mnfcAdapter.setOnNdefPushCompleteCallback(this, this);
25 }
26
27 @Override
28 protected void onResume() {
29 // TODO Auto-generated method stub
30 super.onResume();
31 if (mnfcAdapter != null) {
32 mnfcAdapter.enableForegroundDispatch(this, mPendingIntent, null,
33 null);
34 }
35 }
36
37 @Override
38 protected void onPause() {
39 // TODO Auto-generated method stub
40 super.onPause();
41 if (mnfcAdapter != null) {
42 mnfcAdapter.disableForegroundDispatch(this);
43 }
44 }
45
46 // 显示接收到的数据
47 void processIntent(Intent intent) {
48
49 Parcelable[] rawMsgs = intent
50 .getParcelableArrayExtra(NfcAdapter.EXTRA_NDEF_MESSAGES);
51 NdefMessage message = (NdefMessage) rawMsgs[0];
52 String text = TextRecord.parse(message.getRecords()[0]).getText();
53 Toast.makeText(this, text, 0).show();
54 }
55
56 @Override
57 protected void onNewIntent(Intent intent) {
58 // TODO Auto-generated method stub
59 // super.onNewIntent(intent);
60 processIntent(intent);
61 }
62
63 @Override
64 public void onNdefPushComplete(NfcEvent event) {
65 // TODO Auto-generated method stub
66 Log.i("----->>", "完成");
67 }
68
69 @Override
70 public NdefMessage createNdefMessage(NfcEvent event) {
71 // TODO Auto-generated method stub
72
73 String text = mBeamText.getText().toString().trim();
74 if ("".equals(text)) {
75 text = "默认文本";
76 // 当手机靠近另一部手机，使它自动打开计算器
77 // NdefMessage ndefMessage = new NdefMessage(
78 // new NdefRecord[] { NdefRecord
79 // .createApplicationRecord("com.android.calculator2") });
80 //
81
82 NdefMessage ndefMessage = new NdefMessage(
83 new NdefRecord[] { creatTextRecord(text) });
84 return ndefMessage;
85 }
86
87 return null;
88 }
89
90 public NdefRecord creatTextRecord(String text) {
91
92 byte[] langBytes = Locale.CHINA.getLanguage().getBytes(
93 Charset.forName("US-ASCII"));
94 Charset utfEncoding = Charset.forName("UTF-8");
95 byte[] textBytes = text.getBytes(utfEncoding);
96 int utfBit = 0;
97 char status = (char) (utfBit + langBytes.length);
98 byte[] data = new byte[1 + langBytes.length + textBytes.length];
99 data[0] = (byte) status;
100 System.arraycopy(langBytes, 0, data, 1, langBytes.length);
101 System.arraycopy(textBytes, 0, data, 1 + langBytes.length,
102 textBytes.length);
103
104 NdefRecord ndefRecord = new NdefRecord(NdefRecord.TNF_WELL_KNOWN,
105 NdefRecord.RTD_TEXT, new byte[0], data);
106 return ndefRecord;
107
108 }
109
110 }
