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 17package androidx.work.impl.constraints.controllers; 18 19import static androidx.work.NetworkType.NOT_ROAMING; 20 21import android.content.Context; 22import android.os.Build; 23import android.support.annotation.NonNull; 24import android.util.Log; 25 26import androidx.work.impl.constraints.NetworkState; 27import androidx.work.impl.constraints.trackers.Trackers; 28import androidx.work.impl.model.WorkSpec; 29 30/** 31 * A {@link ConstraintController} for monitoring that the network connection is not roaming. 32 */ 33 34public class NetworkNotRoamingController extends ConstraintController<NetworkState> { 35 private static final String TAG = "NetworkNotRoamingCtrlr"; 36 37 public NetworkNotRoamingController(Context context, OnConstraintUpdatedCallback callback) { 38 super(Trackers.getInstance(context).getNetworkStateTracker(), callback); 39 } 40 41 @Override 42 boolean hasConstraint(@NonNull WorkSpec workSpec) { 43 return workSpec.constraints.getRequiredNetworkType() == NOT_ROAMING; 44 } 45 46 /** 47 * Check for not-roaming constraint on API 24+, when JobInfo#NETWORK_TYPE_NOT_ROAMING was added, 48 * to be consistent with JobScheduler functionality. 49 */ 50 @Override 51 boolean isConstrained(@NonNull NetworkState state) { 52 if (Build.VERSION.SDK_INT < 24) { 53 Log.d(TAG, "Not-roaming network constraint is not supported before API 24, " 54 + "only checking for connected state."); 55 return !state.isConnected(); 56 } 57 return !state.isConnected() || !state.isNotRoaming(); 58 } 59} 60