如何获得根电话的NFCEE_ADMIN权限？

Question

The NFCEE_ADMIN permission is signature level. However, is it possible to "cheat" to get this permission on a rooted phone ? Maybe using a technique similar to the way ClockSync does it ?

I am trying to use reflexion techniques to get access to NFCExtras :

mAdapter = NfcAdapter.getDefaultAdapter(this);

try {
    Class mynfcextras = Class.forName("android.nfc.INfcAdapterExtras");
    Method getnfcExtras = mAdapter.getClass().getMethod("getNfcAdapterExtrasInterface");
    Object nfcExtras = getnfcExtras.invoke(mAdapter);
} catch (Exception e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
}

But of course get the following error : "NFCEE_ADMIN permission required: Neither user xxx nor current process has com.android.nfc.permission.NFCEE_ADMIN."

Edit : Of course, I did add the permission to the package, but it is removed during installation :

W/PackageManager(  XXX): Not granting permission com.android.nfc.permission.NFCEE_ADMIN to package XXX (protectionLevel=2 flags=0x8be46)

Answer 1

The signature of your app needs to be in /system/etc/nfcee_access.xml . See eg http://code.google.com/p/seek-for-android/wiki/BuildingTheSystem for an example how to create it.