1/*
2 * Copyright (C) 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 android.annotation;
18
19import static java.lang.annotation.ElementType.PARAMETER;
20import static java.lang.annotation.RetentionPolicy.SOURCE;
21
22import android.content.Context;
23import android.os.AsyncTask;
24
25import java.lang.annotation.Retention;
26import java.lang.annotation.Target;
27import java.util.concurrent.Executor;
28
29/**
30 * @paramDoc Callback and listener events are dispatched through this
31 *           {@link Executor}, providing an easy way to control which thread is
32 *           used. To dispatch events through the main thread of your
33 *           application, you can use {@link Context#getMainExecutor()}. To
34 *           dispatch events through a shared thread pool, you can use
35 *           {@link AsyncTask#THREAD_POOL_EXECUTOR}.
36 * @hide
37 */
38@Retention(SOURCE)
39@Target(PARAMETER)
40public @interface CallbackExecutor {
41}
42