1 files changed, 94 insertions, 0 deletions
diff --git a/core/java/android/nfc/tech/NfcV.java b/core/java/android/nfc/tech/NfcV.java
new file mode 100644
index 0000000..8e1f066
--- /dev/null
+++ b/core/java/android/nfc/tech/NfcV.java
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+/*
+ * Copyright (C) 2010 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.tech;
+
+import android.nfc.Tag;
+import android.os.Bundle;
+import android.os.RemoteException;
+
+import java.io.IOException;
+
+/**
+ * A low-level connection to a {@link Tag} using NFC vicinity technology, also known as
+ * ISO15693.
+ *
+ * <p>You can acquire this kind of connection with {@link #get}.
+ * Use this class to send and receive data with {@link #transceive transceive()}.
+ *
+ * <p>Applications must implement their own protocol stack on top of
+ * {@link #transceive transceive()}.
+ *
+ * <p class="note"><strong>Note:</strong>
+ * Use of this class requires the {@link android.Manifest.permission#NFC}
+ * permission.
+ */
+public final class NfcV extends BasicTagTechnology {
+    /** @hide */
+    public static final String EXTRA_RESP_FLAGS = "respflags";
+
+    /** @hide */
+    public static final String EXTRA_DSFID = "dsfid";
+
+    private byte mRespFlags;
+    private byte mDsfId;
+
+    /**
+     * Returns an instance of this tech for the given tag. If the tag doesn't support
+     * this tech type null is returned.
+     *
+     * @param tag The tag to get the tech from
+     */
+    public static NfcV get(Tag tag) {
+        if (!tag.hasTech(TagTechnology.NFC_V)) return null;
+        try {
+            return new NfcV(tag);
+        } catch (RemoteException e) {
+            return null;
+        }
+    }
+
+    /** @hide */
+    public NfcV(Tag tag) throws RemoteException {
+        super(tag, TagTechnology.NFC_V);
+        Bundle extras = tag.getTechExtras(TagTechnology.NFC_V);
+        mRespFlags = extras.getByte(EXTRA_RESP_FLAGS);
+        mDsfId = extras.getByte(EXTRA_DSFID);
+    }
+
+    public byte getResponseFlags() {
+        return mRespFlags;
+    }
+
+    public byte getDsfId() {
+        return mDsfId;
+    }
+
+    /**
+     * Send data to a tag and receive the response.
+     * <p>
+     * This method will block until the response is received. It can be canceled
+     * with {@link #close}.
+     * <p>Requires {@link android.Manifest.permission#NFC} permission.
+     *
+     * @param data bytes to send
+     * @return bytes received in response
+     * @throws IOException if the target is lost or connection closed
+     */
+    public byte[] transceive(byte[] data) throws IOException {
+        return transceive(data, true);
+    }
+}