與Android nfc通信到ISO 14443卡

Question

我一直在嘗試編寫一個基本的Android應用程序，它可以將APDU發送到ISO 14443卡並接收響應APDU。我已經在ID爲F000000A的智能卡中有我的小程序。到目前爲止，我已經編寫/修改了其他代碼，但我知道即使我嘗試啓動它時，我的應用在我的手機上崩潰，我也會做一些錯誤的事情。下面是我的代碼，只是提及。我有我的Isodep收發器在不同的類，我的isodep適配器在不同的類。

IsodepAdapter：

package kitkat.com.example.kaudi; 

import java.util.ArrayList; 
import java.util.List; 

import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.BaseAdapter; 
import android.widget.TextView; 

public class IsoDepAdapter extends BaseAdapter { 

    private LayoutInflater layoutInflater; 
    private List<String> messages = new ArrayList<String>(100); 
    private int messageCounter; 

    public IsoDepAdapter(LayoutInflater layoutInflater) { 
     this.layoutInflater = layoutInflater; 
    } 

    public void addMessage(String message) { 
     messageCounter++; 
     messages.add("Message [" + messageCounter + "]: " + message); 
     notifyDataSetChanged(); 
    } 

    @Override 
    public int getCount() { 
     return messages == null ? 0 : messages.size(); 
    } 

    @Override 
    public Object getItem(int position) { 
     return messages.get(position); 
    } 

    @Override 
    public long getItemId(int position) { 
     return 0; 
    } 

    @Override 
    public View getView(int position, View convertView, ViewGroup parent) { 
     if (convertView == null) { 
      convertView = layoutInflater.inflate(android.R.layout.simple_list_item_1, parent, false); 
     } 
     TextView view = (TextView)convertView.findViewById(android.R.id.text1); 
     view.setText((CharSequence)getItem(position)); 
     return convertView; 
    } 
} 

Isodeptransceive：

package kitkat.com.example.kaudi; 

import java.io.IOException; 
import android.nfc.tech.IsoDep; 

public class IsoDepTransceiver implements Runnable { 
    public interface OnMessageReceived { 
     void onMessage(byte[] message); 
     void onError(Exception exception); 
    } 

    private IsoDep isoDep; 
    private OnMessageReceived onMessageReceived; 

    public IsoDepTransceiver(IsoDep isoDep, OnMessageReceived onMessageReceived) { 
     this.isoDep = isoDep; 
     this.onMessageReceived = onMessageReceived; 
    } 

    private static final byte[] CLA_INS_P1_P2 = { 0x00, (byte)0xA4, 0x04, 0x00 }; 
    private static final byte[] AID_ANDROID = { (byte)0xF0, 0x00, 0x00, 0x0A }; 

    private byte[] createSelectAidApdu(byte[] aid) { 
     byte[] result = new byte[6 + aid.length]; 
     System.arraycopy(CLA_INS_P1_P2, 0, result, 0, CLA_INS_P1_P2.length); 
     result[4] = (byte)aid.length; 
     System.arraycopy(aid, 0, result, 5, aid.length); 
     result[result.length - 1] = 0; 
     return result; 
    } 

    @Override 
    public void run() { 
     int messageCounter = 0; 
     try { 
      isoDep.connect(); 
      byte[] response = isoDep.transceive(createSelectAidApdu(AID_ANDROID)); 
      while (isoDep.isConnected() && !Thread.interrupted()) { 
       String message = "Message from IsoDep " + messageCounter++; 
       response = isoDep.transceive(message.getBytes()); 
       onMessageReceived.onMessage(response); 
      } 
      isoDep.close(); 
     } 
     catch (IOException e) { 
      onMessageReceived.onError(e); 
     } 
    } 
} 

NfcReader：

package kitkat.com.example.kaudi; 

import kitkat.com.example.kaudi.IsoDepTransceiver.OnMessageReceived; 
import android.app.Activity; 
import android.nfc.NfcAdapter; 
import android.nfc.NfcAdapter.ReaderCallback; 
import android.nfc.Tag; 
import android.nfc.tech.IsoDep; 
import android.nfc.tech.Ndef; 
import android.os.Bundle; 
import android.util.Log; 
import android.widget.TextView; 

public class NfcReader extends Activity implements OnMessageReceived, ReaderCallback { 
    private static String TAG = NfcReader.class.getSimpleName(); 
    private NfcAdapter nfcAdapter; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main); 
     TextView result = (TextView) findViewById(R.id.refTextView); 

     nfcAdapter = NfcAdapter.getDefaultAdapter(this); 
    } 

    @Override 
    protected void onPause() { 
     super.onPause(); 
     nfcAdapter.disableReaderMode(this); 
    } 

    @Override 
    protected void onResume() { 
     super.onResume(); 
     nfcAdapter.enableReaderMode(this, this, NfcAdapter.FLAG_READER_NFC_A, null); 
    } 

    public void onTagDiscovered(Tag tag) { 
     Log.d(TAG, "HCEfound"); 
     IsoDep isoDep = IsoDep.get(tag); 
     IsoDepTransceiver transceiver = new IsoDepTransceiver(isoDep, this); 
     transceiver.run();  
    } 


    @Override 
    public void onMessage(final byte[] message) { 
     runOnUiThread(new Runnable() { 

      @Override 
      public void run() { 
       String readFromHce = new String(message); 
       TextView result = (TextView) findViewById(R.id.refTextView); 
       result.setText(readFromHce); 
      } 
     }); 
    } 

    @Override 
    public void onError(Exception exception) { 
     onMessage(exception.getMessage().getBytes()); 
    } 
} 

清單：

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
    package="kitkat.com.example.kaudi" 
    android:versionCode="1" 
    android:versionName="1.0" > 

    <uses-sdk 
     android:minSdkVersion="19" 
     android:targetSdkVersion="19" /> 
    <uses-permission android:name="android.permission.INTERNET" /> 
    <uses-permission android:name="android.permission.NFC"/> 
    <uses-feature android:name="android.hardware.nfc" android:required="true"/> 
    <application 
     android:allowBackup="true" 
     android:icon="@drawable/ic_launcher" 
     android:label="@string/app_name" > 
     <activity 
      android:name="kitkat.com.example.kaudi.MainActivity" 
      android:label="@string/app_name" > 
      <intent-filter> 
       <action android:name="android.intent.action.MAIN" /> 
       <category android:name="android.intent.category.LAUNCHER" /> 
      </intent-filter> 
      <intent-filter> 
       <action android:name="android.nfc.action.TECH_DISCOVERED"/> 
       <action android:name="android.nfc.action.NDEF_DISCOVERED"/> 
       <category android:name="android.intent.category.DEFAULT" /> 
       <data android:mimeType="text/plain" /> 
      </intent-filter> 
      <meta-data android:name="android.nfc.action.TECH_DISCOVERED" 
         android:resource="@xml/filter_nfc"/> 
     </activity> 
    </application> 
</manifest> 

logcat的（錯誤）

05-03 19:54:58.713: E/AndroidRuntime(5247): FATAL EXCEPTION: main 
05-03 19:54:58.713: E/AndroidRuntime(5247): Process: kitkat.com.example.kaudi, PID: 5247 
05-03 19:54:58.713: E/AndroidRuntime(5247): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{kitkat.com.example.kaudi/kitkat.com.example.kaudi.MainActivity}: java.lang.ClassNotFoundException: Didn't find class "kitkat.com.example.kaudi.MainActivity" on path: DexPathList[[zip file "/data/app/kitkat.com.example.kaudi-2.apk"],nativeLibraryDirectories=[/data/app-lib/kitkat.com.example.kaudi-2, /vendor/lib, /system/lib]] 
05-03 19:54:58.713: E/AndroidRuntime(5247):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2121) 
05-03 19:54:58.713: E/AndroidRuntime(5247):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245) 
05-03 19:54:58.713: E/AndroidRuntime(5247):  at android.app.ActivityThread.access$800(ActivityThread.java:135) 
05-03 19:54:58.713: E/AndroidRuntime(5247):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196) 
05-03 19:54:58.713: E/AndroidRuntime(5247):  at android.os.Handler.dispatchMessage(Handler.java:102) 
05-03 19:54:58.713: E/AndroidRuntime(5247):  at android.os.Looper.loop(Looper.java:136) 
05-03 19:54:58.713: E/AndroidRuntime(5247):  at android.app.ActivityThread.main(ActivityThread.java:5017) 
05-03 19:54:58.713: E/AndroidRuntime(5247):  at java.lang.reflect.Method.invokeNative(Native Method) 
05-03 19:54:58.713: E/AndroidRuntime(5247):  at java.lang.reflect.Method.invoke(Method.java:515) 
05-03 19:54:58.713: E/AndroidRuntime(5247):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779) 
05-03 19:54:58.713: E/AndroidRuntime(5247):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595) 
05-03 19:54:58.713: E/AndroidRuntime(5247):  at dalvik.system.NativeStart.main(Native Method) 
05-03 19:54:58.713: E/AndroidRuntime(5247): Caused by: java.lang.ClassNotFoundException: Didn't find class "kitkat.com.example.kaudi.MainActivity" on path: DexPathList[[zip file "/data/app/kitkat.com.example.kaudi-2.apk"],nativeLibraryDirectories=[/data/app-lib/kitkat.com.example.kaudi-2, /vendor/lib, /system/lib]] 
05-03 19:54:58.713: E/AndroidRuntime(5247):  at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56) 
05-03 19:54:58.713: E/AndroidRuntime(5247):  at java.lang.ClassLoader.loadClass(ClassLoader.java:497) 
05-03 19:54:58.713: E/AndroidRuntime(5247):  at java.lang.ClassLoader.loadClass(ClassLoader.java:457) 
05-03 19:54:58.713: E/AndroidRuntime(5247):  at android.app.Instrumentation.newActivity(Instrumentation.java:1061) 
05-03 19:54:58.713: E/AndroidRuntime(5247):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2112) 
05-03 19:54:58.713: E/AndroidRuntime(5247):  ... 11 more 

Answer 1

你沒有張貼任何代碼名爲kitkat.com.example.kaudi.MainActivity的活動。如例外情況所示 - 您的課程路徑中沒有任何名爲MainActivity的活動 - 我假設您實際上想在清單中聲明kitkat.com.example.kaudi.NfcReader。