1/* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License 15 */ 16 17package com.android.server.location; 18 19import com.android.server.ServiceWatcher; 20 21import android.content.Context; 22import android.hardware.location.ActivityRecognitionHardware; 23import android.hardware.location.IActivityRecognitionHardwareWatcher; 24import android.os.Handler; 25import android.os.RemoteException; 26import android.util.Log; 27 28/** 29 * Proxy class to bind GmsCore to the ActivityRecognitionHardware. 30 * 31 * @hide 32 */ 33public class ActivityRecognitionProxy { 34 private static final String TAG = "ActivityRecognitionProxy"; 35 36 private final ServiceWatcher mServiceWatcher; 37 private final ActivityRecognitionHardware mActivityRecognitionHardware; 38 39 private ActivityRecognitionProxy( 40 Context context, 41 Handler handler, 42 ActivityRecognitionHardware activityRecognitionHardware, 43 int overlaySwitchResId, 44 int defaultServicePackageNameResId, 45 int initialPackageNameResId) { 46 mActivityRecognitionHardware = activityRecognitionHardware; 47 48 Runnable newServiceWork = new Runnable() { 49 @Override 50 public void run() { 51 bindProvider(mActivityRecognitionHardware); 52 } 53 }; 54 55 // prepare the connection to the provider 56 mServiceWatcher = new ServiceWatcher( 57 context, 58 TAG, 59 "com.android.location.service.ActivityRecognitionProvider", 60 overlaySwitchResId, 61 defaultServicePackageNameResId, 62 initialPackageNameResId, 63 newServiceWork, 64 handler); 65 } 66 67 /** 68 * Creates an instance of the proxy and binds it to the appropriate FusedProvider. 69 * 70 * @return An instance of the proxy if it could be bound, null otherwise. 71 */ 72 public static ActivityRecognitionProxy createAndBind( 73 Context context, 74 Handler handler, 75 ActivityRecognitionHardware activityRecognitionHardware, 76 int overlaySwitchResId, 77 int defaultServicePackageNameResId, 78 int initialPackageNameResId) { 79 ActivityRecognitionProxy activityRecognitionProxy = new ActivityRecognitionProxy( 80 context, 81 handler, 82 activityRecognitionHardware, 83 overlaySwitchResId, 84 defaultServicePackageNameResId, 85 initialPackageNameResId); 86 87 // try to bind the provider 88 if (!activityRecognitionProxy.mServiceWatcher.start()) { 89 Log.e(TAG, "ServiceWatcher could not start."); 90 return null; 91 } 92 93 return activityRecognitionProxy; 94 } 95 96 /** 97 * Helper function to bind the FusedLocationHardware to the appropriate FusedProvider instance. 98 */ 99 private void bindProvider(ActivityRecognitionHardware activityRecognitionHardware) { 100 IActivityRecognitionHardwareWatcher watcher = 101 IActivityRecognitionHardwareWatcher.Stub.asInterface(mServiceWatcher.getBinder()); 102 if (watcher == null) { 103 Log.e(TAG, "No provider instance found on connection."); 104 return; 105 } 106 107 try { 108 watcher.onInstanceChanged(mActivityRecognitionHardware); 109 } catch (RemoteException e) { 110 Log.e(TAG, "Error delivering hardware interface.", e); 111 } 112 } 113} 114