Implement IsoDep timeout handling (API).

Added a method for setting the timeout on IsoDep transactions.

Change-Id: Ie627e7a826556e46295fefe69b9be83ebf911d93

Author: Martijn Coenen

api/current.xml

@@ -101199,6 +101199,19 @@
 <exception name="IOException" type="java.io.IOException">
 </exception>
 </method>
+<method name="setTimeout"
+ return="void"
+ abstract="false"
+ native="false"
+ synchronized="false"
+ static="false"
+ final="false"
+ deprecated="not deprecated"
+ visibility="public"
+>
+<parameter name="timeout" type="int">
+</parameter>
+</method>
 </class>
 <class name="MifareClassic"
  extends="android.nfc.technology.BasicTagTechnology"

core/java/android/nfc/INfcTag.aidl

@@ -39,4 +39,7 @@ interface INfcTag
     int ndefMakeReadOnly(int nativeHandle);
     boolean ndefIsWritable(int nativeHandle);
     int formatNdef(int nativeHandle, in byte[] key);
+
+    void setIsoDepTimeout(int timeout);
+    void resetIsoDepTimeout();
 }

core/java/android/nfc/technology/IsoDep.java

@@ -20,6 +20,7 @@
 import android.nfc.Tag;
 import android.os.Bundle;
 import android.os.RemoteException;
+import android.util.Log;
 
 import java.io.IOException;
 
@@ -38,6 +39,8 @@
  * permission.
  */
 public final class IsoDep extends BasicTagTechnology {
+    private static final String TAG = "NFC";
+
     /** @hide */
     public static final String EXTRA_HI_LAYER_RESP = "hiresp";
     /** @hide */
@@ -56,6 +59,33 @@ public IsoDep(NfcAdapter adapter, Tag tag, Bundle extras)
         }
     }
 
+    /**
+     * Sets the timeout of an IsoDep transceive transaction in milliseconds.
+     * If the transaction has not completed before the timeout,
+     * any ongoing {@link BasicTagTechnology#transceive} operation will be
+     * aborted and the connection to the tag is lost. This setting is applied
+     * only to the {@link Tag} object linked to this technology and will be
+     * reset when {@link IsoDep#close} is called.
+     * The default transaction timeout is 5 seconds.
+     */
+    public void setTimeout(int timeout) {
+        try {
+            mTagService.setIsoDepTimeout(timeout);
+        } catch (RemoteException e) {
+            Log.e(TAG, "NFC service dead", e);
+        }
+    }
+
+    @Override
+    public void close() {
+        try {
+            mTagService.resetIsoDepTimeout();
+        } catch (RemoteException e) {
+            Log.e(TAG, "NFC service dead", e);
+        }
+        super.close();
+    }
+
     /**
      * Return the historical bytes if the tag is using {@link NfcA}, null otherwise.
      */