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      1 /*
      2  * Copyright (C) 2016 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 
     17 package android.externalservice.service;
     18 
     19 import android.app.Service;
     20 import android.content.ComponentName;
     21 import android.content.Context;
     22 import android.content.Intent;
     23 import android.content.ServiceConnection;
     24 import android.os.Handler;
     25 import android.os.IBinder;
     26 import android.os.Message;
     27 import android.os.Messenger;
     28 import android.os.Process;
     29 import android.os.RemoteException;
     30 import android.util.Log;
     31 
     32 import java.util.ArrayList;
     33 
     34 import android.externalservice.common.ServiceMessages;
     35 
     36 public class ServiceCreator extends Service {
     37     private static final String TAG = "ExternalServiceTest.ServiceCreator";
     38 
     39     private final ArrayList<CreatorConnection> mConnections = new ArrayList<>();
     40 
     41     private final Handler mHandler = new BaseService.BaseHandler(this) {
     42         @Override
     43         public void handleMessage(Message msg) {
     44             Log.d(TAG, "Received message: " + msg);
     45             switch (msg.what) {
     46                 case ServiceMessages.MSG_CREATE_EXTERNAL_SERVICE:
     47                     final Context context = ServiceCreator.this;
     48                     final String pkgName = context.getPackageName();
     49                     Intent intent = new Intent();
     50                     intent.setComponent(new ComponentName(pkgName, pkgName+".ExternalService"));
     51                     CreatorConnection conn = new CreatorConnection(msg.replyTo);
     52                     boolean result = context.bindService(intent, conn,
     53                             Context.BIND_AUTO_CREATE | Context.BIND_EXTERNAL_SERVICE);
     54                     if (result) {
     55                         mConnections.add(conn);
     56                     } else {
     57                         Message reply = Message.obtain();
     58                         reply.what = ServiceMessages.MSG_CREATE_EXTERNAL_SERVICE_RESPONSE;
     59                         try {
     60                             msg.replyTo.send(reply);
     61                         } catch (RemoteException e) {
     62                             Log.e(TAG, "Failed to send MSG_CREATE_EXTERNAL_SERVICE_RESPONSE", e);
     63                         }
     64                     }
     65             }
     66             super.handleMessage(msg);
     67         }
     68     };
     69 
     70     private final Messenger mMessenger = new Messenger(mHandler);
     71 
     72     @Override
     73     public IBinder onBind(Intent intent) {
     74         Log.d(TAG, "onBind " + intent);
     75         return mMessenger.getBinder();
     76     }
     77 
     78     @Override
     79     public void onDestroy() {
     80         for (final CreatorConnection conn : mConnections) {
     81             unbindService(conn);
     82         }
     83         super.onDestroy();
     84     }
     85 
     86     private class CreatorConnection implements ServiceConnection {
     87         private IBinder mService = null;
     88         private Messenger mReplyTo = null;
     89 
     90         public CreatorConnection(Messenger replyTo) {
     91             mReplyTo = replyTo;
     92         }
     93 
     94         @Override
     95         public void onServiceConnected(ComponentName name, IBinder service) {
     96             Log.d(TAG, "onServiceConnected " + name);
     97             Message msg =
     98                     Message.obtain(null, ServiceMessages.MSG_CREATE_EXTERNAL_SERVICE_RESPONSE);
     99             msg.obj = new Messenger(service);
    100             try {
    101                 mReplyTo.send(msg);
    102             } catch (RemoteException e) {
    103                 Log.e(TAG, "Failed to send MSG_CREATE_EXTERNAL_SERVICE_RESPONSE", e);
    104             }
    105             mReplyTo = null;
    106         }
    107 
    108         @Override
    109         public void onServiceDisconnected(ComponentName name) {
    110             Log.d(TAG, "onServiceDisconnected " + name);
    111             mService = null;
    112         }
    113     }
    114 }
    115