| /* |
| * Copyright (C) 2012 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.fused; |
| |
| |
| import java.io.FileDescriptor; |
| import java.io.PrintWriter; |
| |
| import com.android.location.provider.LocationProviderBase; |
| import com.android.location.provider.ProviderPropertiesUnbundled; |
| import com.android.location.provider.ProviderRequestUnbundled; |
| |
| import android.content.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.location.Criteria; |
| import android.location.LocationProvider; |
| import android.os.Bundle; |
| import android.os.Handler; |
| import android.os.Looper; |
| import android.os.Message; |
| import android.os.UserHandle; |
| import android.os.WorkSource; |
| |
| public class FusedLocationProvider extends LocationProviderBase implements FusionEngine.Callback { |
| private static final String TAG = "FusedLocationProvider"; |
| |
| private static ProviderPropertiesUnbundled PROPERTIES = ProviderPropertiesUnbundled.create( |
| false, false, false, false, true, true, true, Criteria.POWER_LOW, |
| Criteria.ACCURACY_FINE); |
| |
| private static final int MSG_ENABLE = 1; |
| private static final int MSG_DISABLE = 2; |
| private static final int MSG_SET_REQUEST = 3; |
| |
| private final Context mContext; |
| private final FusionEngine mEngine; |
| |
| private static class RequestWrapper { |
| public ProviderRequestUnbundled request; |
| public WorkSource source; |
| public RequestWrapper(ProviderRequestUnbundled request, WorkSource source) { |
| this.request = request; |
| this.source = source; |
| } |
| } |
| |
| public FusedLocationProvider(Context context) { |
| super(TAG, PROPERTIES); |
| mContext = context; |
| mEngine = new FusionEngine(context, Looper.myLooper()); |
| |
| // listen for user change |
| IntentFilter intentFilter = new IntentFilter(); |
| intentFilter.addAction(Intent.ACTION_USER_SWITCHED); |
| mContext.registerReceiverAsUser(new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| String action = intent.getAction(); |
| if (Intent.ACTION_USER_SWITCHED.equals(action)) { |
| mEngine.switchUser(); |
| } |
| } |
| }, UserHandle.ALL, intentFilter, null, mHandler); |
| } |
| |
| /** |
| * For serializing requests to mEngine. |
| */ |
| private Handler mHandler = new Handler() { |
| @Override |
| public void handleMessage(Message msg) { |
| switch (msg.what) { |
| case MSG_ENABLE: |
| mEngine.init(FusedLocationProvider.this); |
| break; |
| case MSG_DISABLE: |
| mEngine.deinit(); |
| break; |
| case MSG_SET_REQUEST: |
| { |
| RequestWrapper wrapper = (RequestWrapper) msg.obj; |
| mEngine.setRequest(wrapper.request, wrapper.source); |
| break; |
| } |
| } |
| } |
| }; |
| |
| @Override |
| public void onEnable() { |
| mHandler.sendEmptyMessage(MSG_ENABLE); |
| } |
| |
| @Override |
| public void onDisable() { |
| mHandler.sendEmptyMessage(MSG_DISABLE); |
| } |
| |
| @Override |
| public void onSetRequest(ProviderRequestUnbundled request, WorkSource source) { |
| mHandler.obtainMessage(MSG_SET_REQUEST, new RequestWrapper(request, source)).sendToTarget(); |
| } |
| |
| @Override |
| public void onDump(FileDescriptor fd, PrintWriter pw, String[] args) { |
| // perform synchronously |
| mEngine.dump(fd, pw, args); |
| } |
| |
| @Override |
| public int onGetStatus(Bundle extras) { |
| return LocationProvider.AVAILABLE; |
| } |
| |
| @Override |
| public long onGetStatusUpdateTime() { |
| return 0; |
| } |
| } |