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.CONNECTED; 20 21 import android.content.Context; 22 import android.os.Build; 23 import android.support.annotation.NonNull; 24 25 import androidx.work.impl.constraints.NetworkState; 26 import androidx.work.impl.constraints.trackers.Trackers; 27 import androidx.work.impl.model.WorkSpec; 28 29 /** 30 * A {@link ConstraintController} for monitoring that any usable network connection is available. 31 * <p> 32 * For API 26 and above, usable means that the {@link NetworkState} is validated, i.e. 33 * it has a working internet connection. 34 * <p> 35 * For API 25 and below, usable simply means that {@link NetworkState} is connected. 36 */ 37 38 public class NetworkConnectedController extends ConstraintController<NetworkState> { 39 public NetworkConnectedController(Context context, OnConstraintUpdatedCallback callback) { 40 super(Trackers.getInstance(context).getNetworkStateTracker(), callback); 41 } 42 43 @Override 44 boolean hasConstraint(@NonNull WorkSpec workSpec) { 45 return workSpec.constraints.getRequiredNetworkType() == CONNECTED; 46 } 47 48 @Override 49 boolean isConstrained(@NonNull NetworkState state) { 50 if (Build.VERSION.SDK_INT >= 26) { 51 return !state.isConnected() || !state.isValidated(); 52 } else { 53 return !state.isConnected(); 54 } 55 } 56 } 57
