HCE API review. (52246087) · Commits · e / os / android_frameworks_base

api/current.txt

+7 −7

Original line number	Diff line number	Diff line
		@@ -15259,12 +15259,12 @@ package android.nfc {

		package android.nfc.cardemulation {

		public final class CardEmulationManager {
		method public static synchronized android.nfc.cardemulation.CardEmulationManager getInstance(android.nfc.NfcAdapter);
		public final class CardEmulation {
		method public static synchronized android.nfc.cardemulation.CardEmulation getInstance(android.nfc.NfcAdapter);
		method public int getSelectionModeForCategory(java.lang.String);
		method public boolean isDefaultServiceForAid(android.content.ComponentName, java.lang.String);
		method public boolean isDefaultServiceForCategory(android.content.ComponentName, java.lang.String);
		field public static final java.lang.String ACTION_CHANGE_DEFAULT = "android.nfc.cardemulation.ACTION_CHANGE_DEFAULT";
		field public static final java.lang.String ACTION_CHANGE_DEFAULT = "android.nfc.cardemulation.action.ACTION_CHANGE_DEFAULT";
		field public static final java.lang.String CATEGORY_OTHER = "other";
		field public static final java.lang.String CATEGORY_PAYMENT = "payment";
		field public static final java.lang.String EXTRA_CATEGORY = "category";
		@@ -15284,15 +15284,15 @@ package android.nfc.cardemulation {
		method public final void sendResponseApdu(byte[]);
		field public static final int DEACTIVATION_DESELECTED = 1; // 0x1
		field public static final int DEACTIVATION_LINK_LOSS = 0; // 0x0
		field public static final java.lang.String SERVICE_INTERFACE = "android.nfc.HostApduService";
		field public static final java.lang.String SERVICE_META_DATA = "android.nfc.HostApduService";
		field public static final java.lang.String SERVICE_INTERFACE = "android.nfc.cardemulation.action.HOST_APDU_SERVICE";
		field public static final java.lang.String SERVICE_META_DATA = "android.nfc.cardemulation.host_apdu_service";
		}

		public abstract class OffHostApduService extends android.app.Service {
		ctor public OffHostApduService();
		method public abstract android.os.IBinder onBind(android.content.Intent);
		field public static final java.lang.String SERVICE_INTERFACE = "android.nfc.OffHostApduService";
		field public static final java.lang.String SERVICE_META_DATA = "android.nfc.OffHostApduService";
		field public static final java.lang.String SERVICE_INTERFACE = "android.nfc.cardemulation.action.OFF_HOST_APDU_SERVICE";
		field public static final java.lang.String SERVICE_META_DATA = "android.nfc.cardemulation.off_host_apdu_service";
		}

		}

core/java/android/nfc/cardemulation/ApduServiceInfo.java

+9 −5

Original line number	Diff line number	Diff line
		@@ -104,10 +104,14 @@ public final class ApduServiceInfo implements Parcelable {
		try {
		if (onHost) {
		parser = si.loadXmlMetaData(pm, HostApduService.SERVICE_META_DATA);
		if (parser == null) {
		Log.d(TAG, "Didn't find service meta-data, trying legacy.");
		parser = si.loadXmlMetaData(pm, HostApduService.OLD_SERVICE_META_DATA);
		if (parser == null) {
		throw new XmlPullParserException("No " + HostApduService.SERVICE_META_DATA +
		" meta-data");
		}
		}
		} else {
		parser = si.loadXmlMetaData(pm, OffHostApduService.SERVICE_META_DATA);
		if (parser == null) {
		@@ -170,12 +174,12 @@ public final class ApduServiceInfo implements Parcelable {
		com.android.internal.R.styleable.AidGroup_description);
		String groupCategory = groupAttrs.getString(
		com.android.internal.R.styleable.AidGroup_category);
		if (!CardEmulationManager.CATEGORY_PAYMENT.equals(groupCategory)) {
		groupCategory = CardEmulationManager.CATEGORY_OTHER;
		if (!CardEmulation.CATEGORY_PAYMENT.equals(groupCategory)) {
		groupCategory = CardEmulation.CATEGORY_OTHER;
		}
		currentGroup = mCategoryToGroup.get(groupCategory);
		if (currentGroup != null) {
		if (!CardEmulationManager.CATEGORY_OTHER.equals(groupCategory)) {
		if (!CardEmulation.CATEGORY_OTHER.equals(groupCategory)) {
		Log.e(TAG, "Not allowing multiple aid-groups in the " +
		groupCategory + " category");
		currentGroup = null;

core/java/android/nfc/cardemulation/CardEmulation.java

0 → 100644

+343 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2013 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		package android.nfc.cardemulation;

		import android.annotation.SdkConstant;
		import android.annotation.SdkConstant.SdkConstantType;
		import android.app.ActivityThread;
		import android.content.ComponentName;
		import android.content.Context;
		import android.content.pm.IPackageManager;
		import android.content.pm.PackageManager;
		import android.nfc.INfcCardEmulation;
		import android.nfc.NfcAdapter;
		import android.os.RemoteException;
		import android.os.UserHandle;
		import android.provider.Settings;
		import android.util.Log;

		import java.util.HashMap;
		import java.util.List;

		public final class CardEmulation {
		static final String TAG = "CardEmulation";

		/**
		* Activity action: ask the user to change the default
		* card emulation service for a certain category. This will
		* show a dialog that asks the user whether he wants to
		* replace the current default service with the service
		* identified with the ComponentName specified in
		* {@link #EXTRA_SERVICE_COMPONENT}, for the category
		* specified in {@link #EXTRA_CATEGORY}
		*/
		@SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
		public static final String ACTION_CHANGE_DEFAULT =
		"android.nfc.cardemulation.action.ACTION_CHANGE_DEFAULT";

		/**
		* The category extra for {@link #ACTION_CHANGE_DEFAULT}
		*
		* @see #ACTION_CHANGE_DEFAULT
		*/
		public static final String EXTRA_CATEGORY = "category";

		/**
		* The ComponentName object passed in as a parcelable
		* extra for {@link #ACTION_CHANGE_DEFAULT}
		*
		* @see #ACTION_CHANGE_DEFAULT
		*/
		public static final String EXTRA_SERVICE_COMPONENT = "component";

		/**
		* The payment category can be used to indicate that an AID
		* represents a payment application.
		*/
		public static final String CATEGORY_PAYMENT = "payment";

		/**
		* If an AID group does not contain a category, or the
		* specified category is not defined by the platform version
		* that is parsing the AID group, all AIDs in the group will
		* automatically be categorized under the {@link #CATEGORY_OTHER}
		* category.
		*/
		public static final String CATEGORY_OTHER = "other";

		/**
		* Return value for {@link #getSelectionModeForCategory(String)}.
		*
		* <p>In this mode, the user has set a default service for this
		* AID category. If a remote reader selects any of the AIDs
		* that the default service has registered in this category,
		* that service will automatically be bound to to handle
		* the transaction.
		*
		* <p>There are still cases where a service that is
		* not the default for a category can selected:
		* <p>
		* If a remote reader selects an AID in this category
		* that is not handled by the default service, and there is a set
		* of other services {S} that do handle this AID, the
		* user is asked if he wants to use any of the services in
		* {S} instead.
		* <p>
		* As a special case, if the size of {S} is one, containing a single service X,
		* and all AIDs X has registered in this category are not
		* registered by any other service, then X will be
		* selected automatically without asking the user.
		* <p>Example:
		* <ul>
		* <li>Service A registers AIDs "1", "2" and "3" in the category
		* <li>Service B registers AIDs "3" and "4" in the category
		* <li>Service C registers AIDs "5" and "6" in the category
		* </ul>
		* In this case, the following will happen when service A
		* is the default:
		* <ul>
		* <li>Reader selects AID "1", "2" or "3": service A is invoked automatically
		* <li>Reader selects AID "4": the user is asked to confirm he
		* wants to use service B, because its AIDs overlap with service A.
		* <li>Reader selects AID "5" or "6": service C is invoked automatically,
		* because all AIDs it has asked for are only registered by C,
		* and there is no overlap.
		* </ul>
		*
		*/
		public static final int SELECTION_MODE_PREFER_DEFAULT = 0;

		/**
		* Return value for {@link #getSelectionModeForCategory(String)}.
		*
		* <p>In this mode, whenever an AID of this category is selected,
		* the user is asked which service he wants to use to handle
		* the transaction, even if there is only one matching service.
		*/
		public static final int SELECTION_MODE_ALWAYS_ASK = 1;

		/**
		* Return value for {@link #getSelectionModeForCategory(String)}.
		*
		* <p>In this mode, the user will only be asked to select a service
		* if the selected AID has been registered by multiple applications.
		*/
		public static final int SELECTION_MODE_ASK_IF_CONFLICT = 2;

		static boolean sIsInitialized = false;
		static HashMap<Context, CardEmulation> sCardEmus = new HashMap();
		static INfcCardEmulation sService;

		final Context mContext;

		private CardEmulation(Context context, INfcCardEmulation service) {
		mContext = context.getApplicationContext();
		sService = service;
		}

		public static synchronized CardEmulation getInstance(NfcAdapter adapter) {
		if (adapter == null) throw new NullPointerException("NfcAdapter is null");
		Context context = adapter.getContext();
		if (context == null) {
		Log.e(TAG, "NfcAdapter context is null.");
		throw new UnsupportedOperationException();
		}
		if (!sIsInitialized) {
		IPackageManager pm = ActivityThread.getPackageManager();
		if (pm == null) {
		Log.e(TAG, "Cannot get PackageManager");
		throw new UnsupportedOperationException();
		}
		try {
		if (!pm.hasSystemFeature(PackageManager.FEATURE_NFC_HOST_CARD_EMULATION)) {
		Log.e(TAG, "This device does not support card emulation");
		throw new UnsupportedOperationException();
		}
		} catch (RemoteException e) {
		Log.e(TAG, "PackageManager query failed.");
		throw new UnsupportedOperationException();
		}
		sIsInitialized = true;
		}
		CardEmulation manager = sCardEmus.get(context);
		if (manager == null) {
		// Get card emu service
		INfcCardEmulation service = adapter.getCardEmulationService();
		manager = new CardEmulation(context, service);
		sCardEmus.put(context, manager);
		}
		return manager;
		}

		/**
		* Allows an application to query whether a service is currently
		* the default service to handle a card emulation category.
		*
		* <p>Note that if {@link #getSelectionModeForCategory(String)}
		* returns {@link #SELECTION_MODE_ALWAYS_ASK}, this method will always
		* return false.
		*
		* @param service The ComponentName of the service
		* @param category The category
		* @return whether service is currently the default service for the category.
		*/
		public boolean isDefaultServiceForCategory(ComponentName service, String category) {
		try {
		return sService.isDefaultServiceForCategory(UserHandle.myUserId(), service, category);
		} catch (RemoteException e) {
		// Try one more time
		recoverService();
		if (sService == null) {
		Log.e(TAG, "Failed to recover CardEmulationService.");
		return false;
		}
		try {
		return sService.isDefaultServiceForCategory(UserHandle.myUserId(), service,
		category);
		} catch (RemoteException ee) {
		Log.e(TAG, "Failed to recover CardEmulationService.");
		return false;
		}
		}
		}

		/**
		*
		* Allows an application to query whether a service is currently
		* the default handler for a specified ISO7816-4 Application ID.
		*
		* @param service The ComponentName of the service
		* @param aid The ISO7816-4 Application ID
		* @return
		*/
		public boolean isDefaultServiceForAid(ComponentName service, String aid) {
		try {
		return sService.isDefaultServiceForAid(UserHandle.myUserId(), service, aid);
		} catch (RemoteException e) {
		// Try one more time
		recoverService();
		if (sService == null) {
		Log.e(TAG, "Failed to recover CardEmulationService.");
		return false;
		}
		try {
		return sService.isDefaultServiceForAid(UserHandle.myUserId(), service, aid);
		} catch (RemoteException ee) {
		Log.e(TAG, "Failed to reach CardEmulationService.");
		return false;
		}
		}
		}

		/**
		* Returns the application selection mode for the passed in category.
		* Valid return values are:
		* <p>{@link #SELECTION_MODE_PREFER_DEFAULT} the user has requested a default
		* application for this category, which will be preferred.
		* <p>{@link #SELECTION_MODE_ALWAYS_ASK} the user has requested to be asked
		* every time what app he would like to use in this category.
		* <p>{@link #SELECTION_MODE_ASK_IF_CONFLICT} the user will only be asked
		* to pick a service if there is a conflict.
		* @param category The category, for example {@link #CATEGORY_PAYMENT}
		* @return
		*/
		public int getSelectionModeForCategory(String category) {
		if (CATEGORY_PAYMENT.equals(category)) {
		String defaultComponent = Settings.Secure.getString(mContext.getContentResolver(),
		Settings.Secure.NFC_PAYMENT_DEFAULT_COMPONENT);
		if (defaultComponent != null) {
		return SELECTION_MODE_PREFER_DEFAULT;
		} else {
		return SELECTION_MODE_ALWAYS_ASK;
		}
		} else {
		// All other categories are in "only ask if conflict" mode
		return SELECTION_MODE_ASK_IF_CONFLICT;
		}
		}

		/**
		* @hide
		*/
		public boolean setDefaultServiceForCategory(ComponentName service, String category) {
		try {
		return sService.setDefaultServiceForCategory(UserHandle.myUserId(), service, category);
		} catch (RemoteException e) {
		// Try one more time
		recoverService();
		if (sService == null) {
		Log.e(TAG, "Failed to recover CardEmulationService.");
		return false;
		}
		try {
		return sService.setDefaultServiceForCategory(UserHandle.myUserId(), service,
		category);
		} catch (RemoteException ee) {
		Log.e(TAG, "Failed to reach CardEmulationService.");
		return false;
		}
		}
		}

		/**
		* @hide
		*/
		public boolean setDefaultForNextTap(ComponentName service) {
		try {
		return sService.setDefaultForNextTap(UserHandle.myUserId(), service);
		} catch (RemoteException e) {
		// Try one more time
		recoverService();
		if (sService == null) {
		Log.e(TAG, "Failed to recover CardEmulationService.");
		return false;
		}
		try {
		return sService.setDefaultForNextTap(UserHandle.myUserId(), service);
		} catch (RemoteException ee) {
		Log.e(TAG, "Failed to reach CardEmulationService.");
		return false;
		}
		}
		}
		/**
		* @hide
		*/
		public List<ApduServiceInfo> getServices(String category) {
		try {
		return sService.getServices(UserHandle.myUserId(), category);
		} catch (RemoteException e) {
		// Try one more time
		recoverService();
		if (sService == null) {
		Log.e(TAG, "Failed to recover CardEmulationService.");
		return null;
		}
		try {
		return sService.getServices(UserHandle.myUserId(), category);
		} catch (RemoteException ee) {
		Log.e(TAG, "Failed to reach CardEmulationService.");
		return null;
		}
		}
		}

		void recoverService() {
		NfcAdapter adapter = NfcAdapter.getDefaultAdapter(mContext);
		sService = adapter.getCardEmulationService();
		}
		}

core/java/android/nfc/cardemulation/CardEmulationManager.java

+4 −0

Original line number	Diff line number	Diff line
		@@ -33,6 +33,10 @@ import android.util.Log;
		import java.util.HashMap;
		import java.util.List;

		/**
		* TODO Remove when calling .apks are upgraded
		* @hide
		*/
		public final class CardEmulationManager {
		static final String TAG = "CardEmulationManager";

core/java/android/nfc/cardemulation/HostApduService.java

+19 −1

Original line number	Diff line number	Diff line
		@@ -40,13 +40,31 @@ public abstract class HostApduService extends Service {
		*/
		@SdkConstant(SdkConstantType.SERVICE_ACTION)
		public static final String SERVICE_INTERFACE =
		"android.nfc.cardemulation.action.HOST_APDU_SERVICE";

		/**
		* The name of the meta-data element that contains
		* more information about this service.
		*/
		public static final String SERVICE_META_DATA =
		"android.nfc.cardemulation.host_apdu_service";

		/**
		* The {@link Intent} that must be declared as handled by the service.
		* TODO Remove
		* @hide
		*/
		public static final String OLD_SERVICE_INTERFACE =
		"android.nfc.HostApduService";

		/**
		* The name of the meta-data element that contains
		* more information about this service.
		*
		* TODO Remove
		* @hide
		*/
		public static final String SERVICE_META_DATA = "android.nfc.HostApduService";
		public static final String OLD_SERVICE_META_DATA = "android.nfc.HostApduService";

		/**
		* Reason for {@link #onDeactivated(int)}.