1 /* 2 * Copyright 2017 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 androidx.work.impl.constraints.controllers; 18 19 import static androidx.work.NetworkType.UNMETERED; 20 21 import android.content.Context; 22 import android.support.annotation.NonNull; 23 24 import androidx.work.impl.constraints.NetworkState; 25 import androidx.work.impl.constraints.trackers.Trackers; 26 import androidx.work.impl.model.WorkSpec; 27 28 /** 29 * A {@link ConstraintController} for monitoring that the network connection is unmetered. 30 */ 31 32 public class NetworkUnmeteredController extends ConstraintController<NetworkState> { 33 public NetworkUnmeteredController(Context context, OnConstraintUpdatedCallback callback) { 34 super(Trackers.getInstance(context).getNetworkStateTracker(), callback); 35 } 36 37 @Override 38 boolean hasConstraint(@NonNull WorkSpec workSpec) { 39 return workSpec.constraints.getRequiredNetworkType() == UNMETERED; 40 } 41 42 @Override 43 boolean isConstrained(@NonNull NetworkState state) { 44 return !state.isConnected() || state.isMetered(); 45 } 46 } 47
