2 * Copyright (C) 2016 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 package com.android.server.twilight;
19 import android.annotation.NonNull;
20 import android.os.Handler;
23 * This class provides sunrise/sunset information based on the device's current location.
25 public interface TwilightManager {
27 * Register a listener to be notified whenever the twilight state changes.
29 * @param listener the {@link TwilightListener} to be notified
30 * @param handler the {@link Handler} to use to notify the listener
32 void registerListener(@NonNull TwilightListener listener, @NonNull Handler handler);
35 * Unregisters a previously registered listener.
37 * @param listener the {@link TwilightListener} to be unregistered
39 void unregisterListener(@NonNull TwilightListener listener);
42 * Returns the last {@link TwilightState}, or {@code null} if not available.
44 TwilightState getLastTwilightState();