blocks|key|1538713|text|Android只支持在ISO+(ISO/IEC+14443-4)之上模拟ISO/IEC+7816-4应用程序结构.Android没有提供任何方法来访问较低协议层的仿真。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1538714|来自开发人员指南|offset|length|1538715|具体而言，Android4.4支持基于NFC-DEP规范(基于ISO/IEC+14443-4)和ISO/IEC+7816-4规范中定义的进程应用协议数据单元(APDU)的仿真卡。|blockquote|1538716|请注意，CPR+40.30也应该支持ISO-DEP。|1538717|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.android.com/guide/topics/connectivity/nfc/hce.html^0|0|2|6|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@$D|U|E|V|1|W]]|A|$]]|$1|F|3|G|5|H|7|X|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|Y|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

Android only supports emulation of ISO/IEC 7816-4 application structures on top of ISO-DEP (ISO/IEC 14443-4). The Android API does not provide any means to access emulation of lower protocol layers.

From the <a href="https://developer.android.com/guide/topics/connectivity/nfc/hce.html" rel="nofollow">developer guide</a>:

<blockquote>
 Specifically, Android 4.4 supports emulating cards that are based on the NFC-Forum ISO-DEP specification (based on ISO/IEC 14443-4) and process Application Protocol Data Units (APDUs) as defined in the ISO/IEC 7816-4 specification.
</blockquote>

Note that the CPR 40.30 should support ISO-DEP too.

HCE was implemented in the Android 4.4, but there is very little information regarding how to write in an emulated card.

<ul>
<li>I have CPR 40.30 reader</li>
<li>This reader came along with some sample NFC cards. I read these cards using a NFC card reading app.</li>
</ul>

NFC card details that are compatible with CPR 40.30

<blockquote>
 IC manufacturer:
 NXP Semiconductors

<pre><code>IC type:
MIFARE Ultralight (MF0ICU1)

-- NDEF ------------------------------

NFC data set storage not present:
Maximum NDEF storage size after format: 46 bytes

-- EXTRA ------------------------------

 Memory size:
64 bytes total memory
* 16 pages, with 4 bytes per page
* 48 bytes user memory (12 pages)

-- TECH ------------------------------

 Technologies supported:
ISO/IEC 14443-3 (Type A) compatible
ISO/IEC 14443-2 (Type A) compatible

Android technology information:
Tag description:
* TAG: Tech [android.nfc.tech.NfcA, android.nfc.tech.MifareUltralight, android.nfc.tech.NdefFormatable]
android.nfc.tech.NdefFormatable
android.nfc.tech.MifareUltralight
android.nfc.tech.NfcA
* Maximum transceive length: 253 bytes
* Default maximum transceive time-out: 2000 ms

Detailed protocol information:
ID: 04:AC:91:52:CB:29:80
ATQA: 0x4400
SAK: 0x00
</code></pre>
</blockquote>

I want to write HCE code and want my Android phone to act like a card which can be read by CPR 40.30 reader. I'm assuming the HCE code should emulate a card with the above mentioned specifications, as the above NFC card can be read by the reader.

The only useful sample code I have found till now for HCE is <a href="http://blog.opendatalab.de/hack/2013/11/07/android-host-card-emulation-with-acr122/" rel="nofollow noreferrer">this</a>, but it uses ISO-DEP. I want to use <a href="https://developer.android.com/reference/android/nfc/tech/NfcA.html" rel="nofollow noreferrer">NFC-A</a> (ISO/IEC 14443 type A) instead.

How can I write code to emulate an NFC-A card?

Referred Links:

<ul>
<li><a href="https://developer.android.com/guide/topics/connectivity/nfc/hce.html" rel="nofollow noreferrer">https://developer.android.com/guide/topics/connectivity/nfc/hce.html</a></li>
<li><a href="http://blog.opendatalab.de/hack/2013/11/07/android-host-card-emulation-with-acr122/" rel="nofollow noreferrer">http://blog.opendatalab.de/hack/2013/11/07/android-host-card-emulation-with-acr122/</a></li>
<li><a href="https://stackoverflow.com/questions/23319619/java-card-applet-and-host-based-card-emulation-of-android-kitkat-4-4">Java Card Applet and Host-based Card Emulation of Android Kitkat 4.4</a></li>
<li><a href="https://stackoverflow.com/questions/21570167/android-host-card-emulation-with-arduino">Android Host Card Emulation with Arduino</a></li>
<li><a href="https://stackoverflow.com/questions/22983446/nfc-host-card-emulationhce">NFC host card Emulation(HCE)</a></li>
</ul>

Write NFC-A host-based card emulation for CPR 40.30 reader

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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HCE是在Android4.4中实现的，但是很少有关于如何在模拟卡中写入的信息。我有CPR 40.30读取器这位读者带来了一些样本NFC卡。我使用NFC卡读取应用程序读取这些卡片。与CPR 40.30兼容的NFC卡详细信息集成电路制造商: NXP半导体IC类型: MIFARE超薄(MF0ICU1)？？NDEF？每页4字节* 48字节用户内存(12页) --技术android.nfc.tech.Nd

问为CPR 40.30读取器编写基于主机的卡模拟
EN

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