diff options
Diffstat (limited to 'location/lib/java/com/android/location/provider/ActivityRecognitionProviderWatcher.java')
-rw-r--r-- | location/lib/java/com/android/location/provider/ActivityRecognitionProviderWatcher.java | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/location/lib/java/com/android/location/provider/ActivityRecognitionProviderWatcher.java b/location/lib/java/com/android/location/provider/ActivityRecognitionProviderWatcher.java new file mode 100644 index 0000000..03dd042 --- /dev/null +++ b/location/lib/java/com/android/location/provider/ActivityRecognitionProviderWatcher.java @@ -0,0 +1,86 @@ +/* + * 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.location.provider; + +import android.annotation.NonNull; +import android.annotation.Nullable; +import android.hardware.location.IActivityRecognitionHardware; +import android.hardware.location.IActivityRecognitionHardwareWatcher; +import android.os.Binder; +import android.os.IBinder; +import android.os.Process; +import android.os.RemoteException; +import android.util.Log; + +/** + * A watcher class for Activity-Recognition instances. + */ +public class ActivityRecognitionProviderWatcher { + private static final String TAG = "ActivityRecognitionProviderWatcher"; + + private static ActivityRecognitionProviderWatcher sWatcher; + private static final Object sWatcherLock = new Object(); + + private ActivityRecognitionProvider mActivityRecognitionProvider; + + private ActivityRecognitionProviderWatcher() {} + + public static ActivityRecognitionProviderWatcher getInstance() { + synchronized (sWatcherLock) { + if (sWatcher == null) { + sWatcher = new ActivityRecognitionProviderWatcher(); + } + return sWatcher; + } + } + + private IActivityRecognitionHardwareWatcher.Stub mWatcherStub = + new IActivityRecognitionHardwareWatcher.Stub() { + @Override + public void onInstanceChanged(IActivityRecognitionHardware instance) { + int callingUid = Binder.getCallingUid(); + if (callingUid != Process.SYSTEM_UID) { + Log.d(TAG, "Ignoring calls from non-system server. Uid: " + callingUid); + return; + } + + try { + mActivityRecognitionProvider = new ActivityRecognitionProvider(instance); + } catch (RemoteException e) { + Log.e(TAG, "Error creating Hardware Activity-Recognition", e); + } + } + }; + + /** + * Gets the binder needed to interact with proxy provider in the platform. + */ + @NonNull + public IBinder getBinder() { + return mWatcherStub; + } + + /** + * Gets an object that supports the functionality of {@link ActivityRecognitionProvider}. + * + * @return Non-null value if the functionality is supported by the platform, false otherwise. + */ + @Nullable + public ActivityRecognitionProvider getActivityRecognitionProvider() { + return mActivityRecognitionProvider; + } +} |