已經閱讀了許多類似於我的問題 - 如果我錯過了解決問題的方法,我只能道歉,但我真的無法解決這個問題!如何在NDEF發現/活動啓動後顯示NDEF消息?
我設法讓我的NFC活動工作 - 攻標籤啓動我的應用程序的正確行爲 - 但不顯示NDEF消息,我想不通爲什麼...
的標籤帶有純文本信息編碼的Mifare Ultralight。 (mimetype:plain/text)
這是我的代碼,謝謝大家的幫助,這個論壇應該有一個'捐一杯啤酒'按鈕!
package com.example.prototype02;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.PendingIntent;
import android.content.Intent;
import android.content.IntentFilter;
import android.nfc.NdefMessage;
import android.nfc.NfcAdapter;
import android.os.Bundle;
import android.os.Parcelable;
import android.widget.Toast;
public class nfcActivity extends Activity {
private static final String TAG = "NFCReadTag";
private NfcAdapter mNfcAdapter;
private IntentFilter[] mNdefExchangeFilters;
private PendingIntent mNfcPendingIntent;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.nfclayout);
mNfcAdapter = NfcAdapter.getDefaultAdapter(this);
mNfcPendingIntent = PendingIntent.getActivity(this, 0, new Intent(this,
getClass()).addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP
| Intent.FLAG_ACTIVITY_CLEAR_TOP), 0);
IntentFilter nfcIntent = new IntentFilter(NfcAdapter.ACTION_NDEF_DISCOVERED);
nfcIntent.addDataScheme("text/plain");
mNdefExchangeFilters = new IntentFilter[] { nfcIntent };
}
@Override
protected void onPause() {
super.onPause();
if(mNfcAdapter != null) mNfcAdapter.disableForegroundDispatch(this);
}
@Override
protected void onNewIntent(Intent intent) {
super.onNewIntent(intent);
if (mNfcAdapter.ACTION_NDEF_DISCOVERED.equals(intent.getAction())) {
NdefMessage[] messages = null;
Parcelable[] rawMsgs = intent.getParcelableArrayExtra(mNfcAdapter.EXTRA_NDEF_MESSAGES);
if (rawMsgs != null) {
messages = new NdefMessage[rawMsgs.length];
for (int i = 0; i < rawMsgs.length; i++) {
messages[i] = (NdefMessage) rawMsgs[i];
}}
else if (rawMsgs == null){
Toast.makeText(getApplicationContext(), "No NDEF Message Read", Toast.LENGTH_LONG).show();
}
if(messages[0] != null) {
String result="";
byte[] payload = messages[0].getRecords()[0].getPayload();
for (int b = 1; b<payload.length; b++) { // skip SOH
result += (char) payload[b];
}
Toast.makeText(getApplicationContext(), "Safe Location Registered - " + result, Toast.LENGTH_SHORT).show();
}
}
else Toast.makeText(getApplicationContext(), "Intent Error...", Toast.LENGTH_LONG).show();
}
}
我已經發表了一些模板activites這裏:http://code.google.com/p/ndef-tools-for-android/ – ThomasRS