NFC Unlock api changes (11d2e53d) · Commits · e / os / android_frameworks_base

Android.mk

+1 −0

Original line number	Diff line number	Diff line
		@@ -186,6 +186,7 @@ LOCAL_SRC_FILES += \
		core/java/android/nfc/INfcTag.aidl \
		core/java/android/nfc/INfcCardEmulation.aidl \
		core/java/android/nfc/INfcLockscreenDispatch.aidl \
		core/java/android/nfc/INfcUnlockHandler.aidl \
		core/java/android/os/IBatteryPropertiesListener.aidl \
		core/java/android/os/IBatteryPropertiesRegistrar.aidl \
		core/java/android/os/ICancellationSignal.aidl \

core/java/android/nfc/INfcAdapter.aidl

+3 −0

Original line number	Diff line number	Diff line
		@@ -27,6 +27,7 @@ import android.nfc.INfcAdapterExtras;
		import android.nfc.INfcTag;
		import android.nfc.INfcCardEmulation;
		import android.nfc.INfcLockscreenDispatch;
		import android.nfc.INfcUnlockHandler;
		import android.os.Bundle;

		/**
		@@ -57,4 +58,6 @@ interface INfcAdapter
		void setP2pModes(int initatorModes, int targetModes);

		void registerLockscreenDispatch(INfcLockscreenDispatch lockscreenDispatch, in int[] techList);
		void addNfcUnlockHandler(INfcUnlockHandler unlockHandler, in int[] techList);
		void removeNfcUnlockHandler(IBinder b);
		}

core/java/android/nfc/INfcUnlockHandler.aidl

0 → 100644

+12 −0

Original line number	Diff line number	Diff line
		package android.nfc;

		import android.nfc.Tag;

		/**
		* @hide
		*/
		interface INfcUnlockHandler {

		boolean onUnlockAttempted(in Tag tag);

		}

core/java/android/nfc/NfcAdapter.java

+87 −2

Original line number	Diff line number	Diff line
		@@ -30,7 +30,6 @@ import android.content.IntentFilter;
		import android.content.pm.IPackageManager;
		import android.content.pm.PackageManager;
		import android.net.Uri;
		import android.nfc.BeamShareData;
		import android.nfc.tech.MifareClassic;
		import android.nfc.tech.Ndef;
		import android.nfc.tech.NfcA;
		@@ -312,6 +311,8 @@ public final class NfcAdapter {

		final NfcActivityManager mNfcActivityManager;
		final Context mContext;
		final HashMap<NfcUnlockHandler, IBinder> mNfcUnlockHandlers;
		final Object mLock;

		/**
		* A callback to be invoked when the system finds a tag while the foreground activity is
		@@ -393,6 +394,22 @@ public final class NfcAdapter {
		}


		/**
		* A callback to be invoked when an application has registered as a
		* handler to unlock the device given an NFC tag at the lockscreen.
		* @hide
		*/
		@SystemApi
		public interface NfcUnlockHandler {
		/**
		* Called at the lock screen to attempt to unlock the device with the given tag.
		* @param tag the detected tag, to be used to unlock the device
		* @return true if the device was successfully unlocked
		*/
		public boolean onUnlockAttempted(Tag tag);
		}


		/**
		* Helper to check if this device has FEATURE_NFC, but without using
		* a context.
		@@ -525,6 +542,8 @@ public final class NfcAdapter {
		NfcAdapter(Context context) {
		mContext = context;
		mNfcActivityManager = new NfcActivityManager(this);
		mNfcUnlockHandlers = new HashMap<NfcUnlockHandler, IBinder>();
		mLock = new Object();
		}

		/**
		@@ -1457,7 +1476,7 @@ public final class NfcAdapter {
		public boolean onTagDetected(Tag tag) throws RemoteException {
		return lockscreenDispatch.onTagDetected(tag);
		}
		}, Tag.techListFromStrings(techList));
		}, Tag.getTechCodesFromStrings(techList));
		} catch (RemoteException e) {
		attemptDeadServiceRecovery(e);
		return false;
		@@ -1469,6 +1488,72 @@ public final class NfcAdapter {
		return true;
		}

		/**
		* Registers a new NFC unlock handler with the NFC service.
		*
		* <p />NFC unlock handlers are intended to unlock the keyguard in the presence of a trusted
		* NFC device. The handler should return true if it successfully authenticates the user and
		* unlocks the keyguard.
		*
		* <p /> The parameter {@code tagTechnologies} determines which Tag technologies will be polled for
		* at the lockscreen. Polling for less tag technologies reduces latency, and so it is
		* strongly recommended to only provide the Tag technologies that the handler is expected to
		* receive.
		*
		* @hide
		*/
		@SystemApi
		public boolean addNfcUnlockHandler(final NfcUnlockHandler unlockHandler,
		String[] tagTechnologies) {
		try {
		INfcUnlockHandler.Stub iHandler = new INfcUnlockHandler.Stub() {
		@Override
		public boolean onUnlockAttempted(Tag tag) throws RemoteException {
		return unlockHandler.onUnlockAttempted(tag);
		}
		};

		synchronized (mLock) {
		if (mNfcUnlockHandlers.containsKey(unlockHandler)) {
		return true;
		}
		sService.addNfcUnlockHandler(iHandler, Tag.getTechCodesFromStrings(tagTechnologies));
		mNfcUnlockHandlers.put(unlockHandler, iHandler.asBinder());
		}
		} catch (RemoteException e) {
		attemptDeadServiceRecovery(e);
		return false;
		} catch (IllegalArgumentException e) {
		Log.e(TAG, "Unable to register LockscreenDispatch", e);
		return false;
		}

		return true;
		}

		/**
		* Removes a previously registered unlock handler. Also removes the tag technologies
		* associated with the removed unlock handler.
		*
		* @hide
		*/
		@SystemApi
		public boolean removeNfcUnlockHandler(NfcUnlockHandler unlockHandler) {
		try {
		synchronized (mLock) {
		if (mNfcUnlockHandlers.containsKey(unlockHandler)) {
		sService.removeNfcUnlockHandler(mNfcUnlockHandlers.get(unlockHandler));
		mNfcUnlockHandlers.remove(unlockHandler);
		}

		return true;
		}
		} catch (RemoteException e) {
		attemptDeadServiceRecovery(e);
		return false;
		}
		}

		/**
		* @hide
		*/

core/java/android/nfc/Tag.java

+1 −1

Original line number	Diff line number	Diff line
		@@ -196,7 +196,7 @@ public final class Tag implements Parcelable {
		return strings;
		}

		static int[] techListFromStrings(String[] techStringList) throws IllegalArgumentException {
		static int[] getTechCodesFromStrings(String[] techStringList) throws IllegalArgumentException {
		if (techStringList == null) {
		throw new IllegalArgumentException("List cannot be null");
		}