| /* |
| * Copyright (C) 2014 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 com.android.server.location; |
| |
| import com.android.server.ServiceWatcher; |
| |
| import android.content.Context; |
| import android.hardware.location.ActivityRecognitionHardware; |
| import android.hardware.location.IActivityRecognitionHardwareClient; |
| import android.hardware.location.IActivityRecognitionHardwareWatcher; |
| import android.os.Handler; |
| import android.os.IBinder; |
| import android.os.RemoteException; |
| import android.util.Log; |
| |
| /** |
| * Proxy class to bind GmsCore to the ActivityRecognitionHardware. |
| * |
| * @hide |
| */ |
| public class ActivityRecognitionProxy { |
| private static final String TAG = "ActivityRecognitionProxy"; |
| |
| private final ServiceWatcher mServiceWatcher; |
| private final boolean mIsSupported; |
| private final ActivityRecognitionHardware mInstance; |
| |
| private ActivityRecognitionProxy( |
| Context context, |
| Handler handler, |
| boolean activityRecognitionHardwareIsSupported, |
| ActivityRecognitionHardware activityRecognitionHardware, |
| int overlaySwitchResId, |
| int defaultServicePackageNameResId, |
| int initialPackageNameResId) { |
| mIsSupported = activityRecognitionHardwareIsSupported; |
| mInstance = activityRecognitionHardware; |
| |
| Runnable newServiceWork = new Runnable() { |
| @Override |
| public void run() { |
| bindProvider(); |
| } |
| }; |
| |
| // prepare the connection to the provider |
| mServiceWatcher = new ServiceWatcher( |
| context, |
| TAG, |
| "com.android.location.service.ActivityRecognitionProvider", |
| overlaySwitchResId, |
| defaultServicePackageNameResId, |
| initialPackageNameResId, |
| newServiceWork, |
| handler); |
| } |
| |
| /** |
| * Creates an instance of the proxy and binds it to the appropriate FusedProvider. |
| * |
| * @return An instance of the proxy if it could be bound, null otherwise. |
| */ |
| public static ActivityRecognitionProxy createAndBind( |
| Context context, |
| Handler handler, |
| boolean activityRecognitionHardwareIsSupported, |
| ActivityRecognitionHardware activityRecognitionHardware, |
| int overlaySwitchResId, |
| int defaultServicePackageNameResId, |
| int initialPackageNameResId) { |
| ActivityRecognitionProxy activityRecognitionProxy = new ActivityRecognitionProxy( |
| context, |
| handler, |
| activityRecognitionHardwareIsSupported, |
| activityRecognitionHardware, |
| overlaySwitchResId, |
| defaultServicePackageNameResId, |
| initialPackageNameResId); |
| |
| // try to bind the provider |
| if (!activityRecognitionProxy.mServiceWatcher.start()) { |
| Log.e(TAG, "ServiceWatcher could not start."); |
| return null; |
| } |
| return activityRecognitionProxy; |
| } |
| |
| /** |
| * Helper function to bind the FusedLocationHardware to the appropriate FusedProvider instance. |
| */ |
| private void bindProvider() { |
| if (!mServiceWatcher.runOnBinder(new ServiceWatcher.BinderRunner() { |
| @Override |
| public void run(IBinder binder) { |
| String descriptor; |
| try { |
| descriptor = binder.getInterfaceDescriptor(); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Unable to get interface descriptor.", e); |
| return; |
| } |
| |
| if (IActivityRecognitionHardwareWatcher.class.getCanonicalName() |
| .equals(descriptor)) { |
| IActivityRecognitionHardwareWatcher watcher = |
| IActivityRecognitionHardwareWatcher.Stub.asInterface(binder); |
| if (watcher == null) { |
| Log.e(TAG, "No watcher found on connection."); |
| return; |
| } |
| if (mInstance == null) { |
| // to keep backwards compatibility do not update the watcher when there is |
| // no instance available, or it will cause an NPE |
| Log.d(TAG, "AR HW instance not available, binding will be a no-op."); |
| return; |
| } |
| try { |
| watcher.onInstanceChanged(mInstance); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Error delivering hardware interface to watcher.", e); |
| } |
| } else if (IActivityRecognitionHardwareClient.class.getCanonicalName() |
| .equals(descriptor)) { |
| IActivityRecognitionHardwareClient client = |
| IActivityRecognitionHardwareClient.Stub.asInterface(binder); |
| if (client == null) { |
| Log.e(TAG, "No client found on connection."); |
| return; |
| } |
| try { |
| client.onAvailabilityChanged(mIsSupported, mInstance); |
| } catch (RemoteException e) { |
| Log.e(TAG, "Error delivering hardware interface to client.", e); |
| } |
| } else { |
| Log.e(TAG, "Invalid descriptor found on connection: " + descriptor); |
| } |
| } |
| })) { |
| Log.e(TAG, "Null binder found on connection."); |
| } |
| } |
| } |