如何在Android上制作vcard / vcal Ndef消息

我是 Android编码的新手,我对NFC技术很感兴趣.
我的第一步专注于标签读/写模式,目前我看不到有关如何使用Vcard / Vcal MIME类型和NDEF记录/消息的大量信息.

如果有人可以发布一些示例代码或更好地指向类似教程的资源,那将是很好的！

编辑：这是我一直在使用的代码,它搞砸了.通过一些修改,我已经能够写出纯文本和智能海报/ urs数据.另外要记得的是,我正在使用Type 2 NFC标签,因为存储容量有限,我只想保存名称和放大器. Vcards上的电话号码,或活动名称& Vcal记录的日期.谢谢！

公共类VcardActivity扩展Activity {

NfcAdapter adapter;
PendingIntent pendingIntent;
IntentFilter writeTagFilters[];
Tag tag;
Context ctx;
Boolean writeMode;

@Override
public void onCreate(Bundle savedInstanceStatE) {
    super.onCreate(savedInstanceStatE);
    setContentView(R.layout.activity_text);
    getActionBar().setDisplayHomeAsUpEnabled(true);

    ctx = this;
    Switch swWrite = (Switch) findViewById(R.id.switchWriteText);
    //final TextView msg = (TextView) findViewById(R.id.editText1);
    final String msg = "BEGIN:VCARD\n" +
            "VERSION:2.1\n" +
            "N:Gump;Forrest\n" +
            "FN:Forrest Gump\n" +
            "ORG:Bubba Gump Shrimp Co.\n" +
            "titlE:Shrimp Man\n" +
            "TEL;WORK;VOICE111) 555-1212\n" +
            "TEL;HOME;VOICE404) 555-1212\n" +
            "ADR;WORK:;;100 Edge;Baytown;United\n" +
            "EMAIL;PREF;INTERNET:forrestgump@example.com\n " +
            "END:VCARD";
    swWrite.setOncheckedchangelistener(new CompoundButton.oncheckedchangelistener() {

        @Override
        public void oncheckedChanged(CompoundButton buttonView,Boolean ischecked) {
            if (ischecked) {
                try {
                    if (tag == null) {
                        Toast.makeText(ctx,ctx.getString(R.String.error_detected),Toast.LENGTH_SHORT).show();
                    } else {
                        write(msg,tag);
                        Toast.makeText(ctx,ctx.getString(R.String.ok_wriTing),Toast.LENGTH_LONG).show();
                    }
                } catch (IOException E) {
                    Toast.makeText(ctx,ctx.getString(R.String.error_wriTing),Toast.LENGTH_LONG).show();
                    e.printStackTrace();
                } catch (FormatException E) {
                    Toast.makeText(ctx,Toast.LENGTH_LONG).show();
                    e.printStackTrace();
                }

            }
        }
    });

    /* INTENT FILTER */
    adapter = NfcAdapter.getDefaultAdapter(this);
    pendingIntent = PendingIntent.getActivity(this,new Intent(this,getClass()).addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOp),0);
    IntentFilter tagDetected = new IntentFilter(
            NfcAdapter.ACTION_TAG_DISCOVERED);
    tagDetected.addCategory(Intent.CATEGORY_DEFAULT);
    writeTagFilters = new IntentFilter[] { tagDetected };
}

@Override
public Boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.activity_text,menu);
    return true;
}

@Override
public Boolean onOptionsItemSELEcted(MenuItem item) {
    switch (item.getItemId()) {
    case android.R.id.home:
        NavUtils.navigateUpFromSaMetask(this);
        return true;
    }
    return super.onOptionsItemSELEcted(item);
}

private void write(String text,Tag tag) throws IOException,FormatException {

    NdefRecord[] records = { createRecord(text) };
    Ndefmessage message = new Ndefmessage(records);
    // Get an instance of Ndef for the tag.
    Ndef ndef = Ndef.get(tag);
    // Enable I/O
    ndef.connect();
    // Write the message
    ndef.writeNdefmessage(messagE);
    // Close the connection
    ndef.close();
}

private NdefRecord createRecord(String text)
        throws UnsupportedEncodingException {
    String msg = "BEGIN:VCARD\n" +
            "VERSION:2.1\n" +
            "N:Gump;Forrest\n" +
            "FN:Forrest Gump\n" +
            "ORG:Bubba Gump Shrimp Co.\n" +
            "titlE:Shrimp Man\n" +
            "TEL;WORK;VOICE:55-1212\n" +
            "TEL;HOME;VOICE:55-1212\n" +
            "ADR;WORK:;;100 Edge;Ban;United\n" +
            "EMAIL;PREF;INTERNET:p@example.com\n " +
            "END:VCARD";

            byte[] textBytes = msg.getBytes();


            NdefRecord textRecord = new NdefRecord(NdefRecord.TNF_MIME_MEDIA,"text/x-vCard".getBytes(),new byte[] {},textBytes);

    return textRecord;
}

@Override
protected void onNewIntent(Intent intent) {
    if (NfcAdapter.ACTION_TAG_DISCOVERED.equals(intent.getAction())) {
        tag = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);
        Toast.makeText(this,this.getString(R.String.ok_detection) + tag.toString(),Toast.LENGTH_LONG).show();
    }
}

@Override
public void onPause() {
    super.onPause();
    WriteModeOff();
}

@Override
public void onResume() {
    super.onResume();
    WriteModeOn();
}

private void WriteModeOn() {
    writeMode = true;
    adapter.enableForegroundDispatch(this,pendingIntent,writeTagFilters,@R_607_6633@
}

private void WriteModeOff() {
    writeMode = false;
    adapter.disableForegroundDispatch(this);
}

}