有谁知道 Android NDEF PUSH / ANDROID BEAM 是否支持 NFC 读卡器，例如带有内置安全访问模块 (SAM) 的 ACR1222U？我发现了一个有趣的站点，它提供了一个 Java Applet，它连接到 NFC 阅读器并输出从 Android 手机传输的所有 NDEF 消息。网站：http ://www.grundid.de/nfc/
在小程序示例中，使用的读卡器是 ACR122U，它可以完美运行。那么 ACR1222U (SAM) 有什么不同吗？我的设备是带有 Android 4.0.4 ICS 的三星 Galaxy SIII。
Do you know the Firmeware Version of both ACR122Us? I experienced simmilar behaivour with an ACR122U 207 (without SAM) an the Galaxy S3.
I think the Problem is not related to the SAM Modul, because I've got it working here with a touchatag ACR122U with SAM Module and an older Firmeware Version.
After some research I found out that you have to put the reader into Initalizer Mode before you put the phone on it, otherwise there is some low level communication between reader and phone (Card Removed and Card present changing fast). Unfortunately there is nothing about it in the documentation by acr, but putting it in Initalizator mode and then putting the phone on it works on my side.
I am currently adding this to my Android Beam API and hopefully will finish during the next month.