0.1.5

Added

• On-device self-test (MOB-418). MobNfc.SelfTest implements
  Mob.Plugin.SelfTest and is declared in the manifest as selftest:. It
  makes one read-only nfc_available/0 call: true passes, false (the
  native side answered, but there is no radio, as on every simulator and
  emulator) is {:skip, :needs_hardware}, :disabled is a skip naming the
  switched-off radio, and an error answer or the host stub's
  nif_not_loaded fails. Run it with mix mob.selftest from a host app
  (mob_dev 0.7.17). mob_version in the manifest is now ~> 0.9.

Changed

• Requires mob >= 0.9.15 (was ~> 0.7), for Mob.Plugin.SelfTest;
  mob_version in the manifest is now ~> 0.9 (was ~> 0.7). Hosts on
  mob 0.7 or 0.8 must upgrade before taking this release.

• Android: nfc_available/0 no longer answers false without asking the
  radio. false now means only "no NFC hardware"; the other answers are:

  • :disabled: the radio is present but switched off;
  • {:error, :bridge_not_registered}: MobNfcBridge.register() never ran
    or the method-id lookup failed;
  • {:error, :no_activity}: the bootstrap hasn't handed the bridge an
    Activity;
  • {:error, :no_jni_env}: no JNIEnv could be attached;
  • {:error, :bridge_exception}: the Kotlin side threw (a pending Java
    exception is now detected and cleared);
  • {:error, :unknown_state}: the bridge returned a code the NIF doesn't
    know.

  The Kotlin bridge method is now nfc_state(): Int (was
  nfc_available(): Boolean). MobNfc.available?/0 is unchanged (still
  false for all of these). Method-id lookups in nativeRegister now clear
  a pending NoSuchMethodError so one missing method can't poison the rest.