Cherry-pick: Add callback-based support for HW Activity Recognition.

Add a callback-based mechanism for GmsCore to connect to Hardware Activity
Recognition. This allows GmsCore to stop polling to identify if the Android
platform supports the functionality or not.

Bug: 17112184
Change-Id: I8f9459cbd15eecd70f6919c6551e6f7a663c732f

2 files changed, 39 insertions, 1 deletions

diff --git a/core/java/android/hardware/location/IActivityRecognitionHardwareClient.aidl b/core/java/android/hardware/location/IActivityRecognitionHardwareClient.aidl
new file mode 100644
index 0000000..d2c3d75
--- /dev/null
+++ b/core/java/android/hardware/location/IActivityRecognitionHardwareClient.aidl
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2015, 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/license/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.hardware.location;
+
+import android.hardware.location.IActivityRecognitionHardware;
+
+/**
+ * Activity Recognition Hardware client interface.
+ * This interface can be used to receive interfaces to implementations of
+ * {@link IActivityRecognitionHardware}.
+ *
+ * @hide
+ */
+interface IActivityRecognitionHardwareClient {
+    /**
+     * Hardware Activity-Recognition availability event.
+     *
+     * @param isSupported whether the platform has hardware support for the feature
+     * @param instance the available instance to provide access to the feature
+     */
+    void onAvailabilityChanged(in boolean isSupported, in IActivityRecognitionHardware instance);
+}
diff --git a/core/java/android/hardware/location/IActivityRecognitionHardwareWatcher.aidl b/core/java/android/hardware/location/IActivityRecognitionHardwareWatcher.aidl
index 0507f52..12e3117 100644
--- a/core/java/android/hardware/location/IActivityRecognitionHardwareWatcher.aidl
+++ b/core/java/android/hardware/location/IActivityRecognitionHardwareWatcher.aidl
@@ -22,6 +22,8 @@ import android.hardware.location.IActivityRecognitionHardware;
  * Activity Recognition Hardware watcher. This interface can be used to receive interfaces to
  * implementations of {@link IActivityRecognitionHardware}.
  *
+ * @deprecated use {@link IActivityRecognitionHardwareClient} instead.
+
  * @hide
  */
 interface IActivityRecognitionHardwareWatcher {
@@ -29,4 +31,4 @@ interface IActivityRecognitionHardwareWatcher {
      * Hardware Activity-Recognition availability event.
      */
     void onInstanceChanged(in IActivityRecognitionHardware instance);
-}
\ No newline at end of file
+}