NFC标签的P2P拦截 [英] NFC P2P tag intercept

问题描述

我建立使用Eclipse和Android SDK的Andr​​oid应用程序。我想实现一个NFC P2P功能，我在这个意义上，当您将2个手机背靠背的应用程序，无论是发送一个字符串，并自动接收一个字符串。这当然会发生在一个单独的活动。我已成功地发送自定义标签（字符串），但一直未能拦截，并在应用code以后使用它。我怎样才能做到这一点？

I am building an Android app using Eclipse and Android SDK. I would like to implement an NFC P2P function in my app in the sense that when you place the 2 phones back to back, both send a string and receive a string automatically. This would of course happen in a separate activity. I have managed to send a custom tag (String) but have been unable to intercept it and use it afterwards in the app code. How can I do this?

这是我迄今为止：

public class MainActivity extends Activity {

public NfcAdapter mAdapter;
PendingIntent mPendingIntent;

 @Override
 protected void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
     setContentView(R.layout.activity_main);


     mAdapter = NfcAdapter.getDefaultAdapter(this);

     NdefRecord rec = NdefRecord.createUri("www.stackoverflow.com"); 
     NdefMessage ndef = new NdefMessage(rec);

     mAdapter.setNdefPushMessage(ndef, this);
 }

我花了很多时间试图找到和理解的解决方案拦截标记。不成功。

I have spent a lot of time trying to find and understand solutions to intercept the tag. Unsuccessfully.

感谢您的帮助。

推荐答案

您可以使用前景调度系统的活动中收到的NDEF消息：

You can use the foreground dispatch system to receive the NDEF message within your activity:

1. 在 onResume（）：

PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, new Intent(this, getClass()).addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP), 0);
NfcAdapter nfcAdapter = NfcAdapter.getDefaultAdapter(this);
nfcAdapter.enableForegroundDispatch(this, pendingIntent, null, null);

做一些在接到意图：

Do something upon receiving the intent:

public void onNewIntent(Intent intent) {
    ...
}

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