diff options
Diffstat (limited to 'services/core/java/com/android/server/location/FusedProxy.java')
-rw-r--r-- | services/core/java/com/android/server/location/FusedProxy.java | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/services/core/java/com/android/server/location/FusedProxy.java b/services/core/java/com/android/server/location/FusedProxy.java new file mode 100644 index 0000000..f7fac77 --- /dev/null +++ b/services/core/java/com/android/server/location/FusedProxy.java @@ -0,0 +1,128 @@ +/* + * 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 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.Manifest; +import android.content.Context; +import android.hardware.location.IFusedLocationHardware; +import android.location.IFusedProvider; +import android.os.Handler; +import android.os.RemoteException; +import android.util.Log; + +/** + * Proxy that helps bind GCore FusedProvider implementations to the Fused Hardware instances. + * + * @hide + */ +public final class FusedProxy { + private final String TAG = "FusedProxy"; + private final ServiceWatcher mServiceWatcher; + private final FusedLocationHardwareSecure mLocationHardware; + + /** + * Constructor of the class. + * This is private as the class follows a factory pattern for construction. + * + * @param context The context needed for construction. + * @param handler The handler needed for construction. + * @param locationHardware The instance of the Fused location hardware assigned to the proxy. + */ + private FusedProxy( + Context context, + Handler handler, + IFusedLocationHardware locationHardware, + int overlaySwitchResId, + int defaultServicePackageNameResId, + int initialPackageNameResId) { + mLocationHardware = new FusedLocationHardwareSecure( + locationHardware, + context, + Manifest.permission.LOCATION_HARDWARE); + Runnable newServiceWork = new Runnable() { + @Override + public void run() { + bindProvider(mLocationHardware); + } + }; + + // prepare the connection to the provider + mServiceWatcher = new ServiceWatcher( + context, + TAG, + "com.android.location.service.FusedProvider", + overlaySwitchResId, + defaultServicePackageNameResId, + initialPackageNameResId, + newServiceWork, + handler); + } + + /** + * Creates an instance of the proxy and binds it to the appropriate FusedProvider. + * + * @param context The context needed for construction. + * @param handler The handler needed for construction. + * @param locationHardware The instance of the Fused location hardware assigned to the proxy. + * + * @return An instance of the proxy if it could be bound, null otherwise. + */ + public static FusedProxy createAndBind( + Context context, + Handler handler, + IFusedLocationHardware locationHardware, + int overlaySwitchResId, + int defaultServicePackageNameResId, + int initialPackageNameResId) { + FusedProxy fusedProxy = new FusedProxy( + context, + handler, + locationHardware, + overlaySwitchResId, + defaultServicePackageNameResId, + initialPackageNameResId); + + // try to bind the Fused provider + if (!fusedProxy.mServiceWatcher.start()) { + return null; + } + + return fusedProxy; + } + + /** + * Helper function to bind the FusedLocationHardware to the appropriate FusedProvider instance. + * + * @param locationHardware The FusedLocationHardware instance to use for the binding operation. + */ + private void bindProvider(IFusedLocationHardware locationHardware) { + IFusedProvider provider = IFusedProvider.Stub.asInterface(mServiceWatcher.getBinder()); + + if (provider == null) { + Log.e(TAG, "No instance of FusedProvider found on FusedLocationHardware connected."); + return; + } + + try { + provider.onFusedLocationHardwareChange(locationHardware); + } catch (RemoteException e) { + Log.e(TAG, e.toString()); + } + } +} |