HandlerFactory.java revision d8463954727c9f8b688e69476439830cadb7b45a 
1/*
2 * Copyright (C) 2014 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 com.android.camera.async;
18
19import android.os.Handler;
20import android.os.HandlerThread;
21
22/**
23 * Creates new handlers backed by threads with a specified lifetime.
24 */
25public class HandlerFactory {
26    /**
27     * @param lifetime The lifetime of the associated handler's thread.
28     * @param threadName The name to assign to the created thread.
29     * @return A handler backed by a new thread.
30     */
31    public Handler create(Lifetime lifetime, String threadName) {
32        final HandlerThread thread = new HandlerThread(threadName);
33        thread.start();
34
35        lifetime.add(new SafeCloseable() {
36            @Override
37            public void close() {
38                thread.quitSafely();
39            }
40        });
41
42        return new Handler(thread.getLooper());
43    }
44}
45