| /* |
| * Copyright 2017 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package androidx.work.impl.background.systemalarm; |
| |
| import android.content.Context; |
| import android.content.Intent; |
| import android.support.annotation.NonNull; |
| import android.support.annotation.RestrictTo; |
| |
| import androidx.work.Logger; |
| import androidx.work.impl.Scheduler; |
| import androidx.work.impl.model.WorkSpec; |
| |
| /** |
| * A {@link Scheduler} that schedules work using {@link android.app.AlarmManager}. |
| * |
| * @hide |
| */ |
| @RestrictTo(RestrictTo.Scope.LIBRARY_GROUP) |
| public class SystemAlarmScheduler implements Scheduler { |
| |
| private static final String TAG = "SystemAlarmScheduler"; |
| |
| private final Context mContext; |
| |
| public SystemAlarmScheduler(@NonNull Context context) { |
| mContext = context.getApplicationContext(); |
| } |
| |
| @Override |
| public void schedule(WorkSpec... workSpecs) { |
| for (WorkSpec workSpec : workSpecs) { |
| scheduleWorkSpec(workSpec); |
| } |
| } |
| |
| @Override |
| public void cancel(@NonNull String workSpecId) { |
| Intent cancelIntent = CommandHandler.createStopWorkIntent(mContext, workSpecId); |
| mContext.startService(cancelIntent); |
| } |
| |
| /** |
| * Periodic work is rescheduled using one-time alarms after each run. This allows the delivery |
| * times to drift to guarantee that the interval duration always elapses between alarms. |
| */ |
| private void scheduleWorkSpec(@NonNull WorkSpec workSpec) { |
| Logger.debug(TAG, String.format("Scheduling work with workSpecId %s", workSpec.id)); |
| Intent scheduleIntent = CommandHandler.createScheduleWorkIntent(mContext, workSpec.id); |
| mContext.startService(scheduleIntent); |
| } |
| } |
