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      1 /*
      2  * Copyright (C) 2011 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 com.android.settings.net;
     18 
     19 import android.content.AsyncTaskLoader;
     20 import android.content.Context;
     21 import android.net.INetworkStatsSession;
     22 import android.net.NetworkStats;
     23 import android.net.NetworkTemplate;
     24 import android.os.Bundle;
     25 import android.os.RemoteException;
     26 
     27 public class SummaryForAllUidLoader extends AsyncTaskLoader<NetworkStats> {
     28     private static final String KEY_TEMPLATE = "template";
     29     private static final String KEY_START = "start";
     30     private static final String KEY_END = "end";
     31 
     32     private final INetworkStatsSession mSession;
     33     private final Bundle mArgs;
     34 
     35     public static Bundle buildArgs(NetworkTemplate template, long start, long end) {
     36         final Bundle args = new Bundle();
     37         args.putParcelable(KEY_TEMPLATE, template);
     38         args.putLong(KEY_START, start);
     39         args.putLong(KEY_END, end);
     40         return args;
     41     }
     42 
     43     public SummaryForAllUidLoader(Context context, INetworkStatsSession session, Bundle args) {
     44         super(context);
     45         mSession = session;
     46         mArgs = args;
     47     }
     48 
     49     @Override
     50     protected void onStartLoading() {
     51         super.onStartLoading();
     52         forceLoad();
     53     }
     54 
     55     @Override
     56     public NetworkStats loadInBackground() {
     57         final NetworkTemplate template = mArgs.getParcelable(KEY_TEMPLATE);
     58         final long start = mArgs.getLong(KEY_START);
     59         final long end = mArgs.getLong(KEY_END);
     60 
     61         try {
     62             return mSession.getSummaryForAllUid(template, start, end, false);
     63         } catch (RemoteException e) {
     64             return null;
     65         }
     66     }
     67 
     68     @Override
     69     protected void onStopLoading() {
     70         super.onStopLoading();
     71         cancelLoad();
     72     }
     73 
     74     @Override
     75     protected void onReset() {
     76         super.onReset();
     77         cancelLoad();
     78     }
     79 }
     80