[英]Listening for credit card info with NFC
關於如何創建示例應用程序來監聽信用卡信息,是否有任何有效的示例?
我從Android示例中嘗試了這段代碼,但是當我掃描卡時沒有任何反應( NFC
正在工作,我聽到嗶聲)
public class MainActivity extends Activity {
private NfcAdapter mAdapter;
private PendingIntent mPendingIntent;
private IntentFilter[] mFilters;
private String[][] mTechLists;
private TextView mText;
private int mCount = 0;
@Override
public void onCreate(Bundle savedState) {
super.onCreate(savedState);
setContentView(R.layout.activity_main);
mAdapter = NfcAdapter.getDefaultAdapter(this);
mPendingIntent = PendingIntent.getActivity(this, 0,
new Intent(this, getClass()).addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP), 0);
IntentFilter ndef = new IntentFilter(NfcAdapter.ACTION_TAG_DISCOVERED);
try {
ndef.addDataType("*/*");
} catch (MalformedMimeTypeException e) {
throw new RuntimeException("fail", e);
}
mFilters = new IntentFilter[] {
ndef,
};
mTechLists = new String[][] { new String[] { NfcF.class.getName() } };
}
@Override
public void onResume() {
super.onResume();
mAdapter.enableForegroundDispatch(this, mPendingIntent, mFilters, mTechLists);
String action = getIntent().getAction(); //allways MAIN, even after scanning a card
Parcelable[] msg1 = getIntent().getParcelableArrayExtra(NfcAdapter.EXTRA_NDEF_MESSAGES); //allways null
Parcelable[] msg2 = getIntent().getParcelableArrayExtra(NfcAdapter.EXTRA_TAG); //allways null
}
@Override
public void onNewIntent(Intent intent) {
Log.i("Foreground dispatch", "Discovered tag with intent: " + intent);
mText.setText("Discovered tag " + ++mCount + " with intent: " + intent);
}
@Override
public void onPause() {
super.onPause();
mAdapter.disableForegroundDispatch(this);
}
}
我的Manifest
文件可能有問題:
<uses-sdk
android:minSdkVersion="16"
android:targetSdkVersion="17" />
<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"
android:theme="@style/AppTheme" >
<activity
android:name="pl.aprilapps.nfcreader.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.TAG_DISCOVERED" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
<intent-filter>
<action android:name="android.nfc.action.NDEF_DISCOVERED" />
<category android:name="android.intent.category.DEFAULT" />
<data android:mimeType="text/plain" />
</intent-filter>
</activity>
</application>
看一下這篇博客文章 。 我概述了您需要聽以對非接觸式EMV卡的存在做出反應的NFC標簽的類型。 該代碼使用Triangle.io的API一旦檢測到卡就提取卡信息,但是您可以根據需要相當容易地更改該部分。
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