HCE: code entry point for unfiltered incoming APDU

Question

I'm having trouble finding orientation in the Android 4.4.4 source responsible for NFC Host Card Emulation (HCE).

In particular I'm looking for an entry point, ie class or method at which I can tap in and listen to all incoming command APDUs unfiltered. I thought HostEmulationManager.onHostEmulationData(byte[] apdu) provides such a place but unfortunately I find that some fully ISO 7816-4 compliant APDUs won't even get there. I then receive something like

02-12 17:39:32.598: E/BrcmNfcNfa(878): CET4T: Application has not been selected 02-12 17:48:03.867: E/BrcmNfcNfa(878): UICC[0x0] is not activated

without the method ever being called.

Any ideas where to start? I don't want to delve into C-Code so the point of access should be anywhere in Java.

Answer 1

如果您需要NFC主机卡仿真（HCE）的入口点，请查看HostApduService类的方向，特别是processCommandApdu方法。