File content as of revision 45:2aa9f933c8d2:

/*
 * Copyright (c) 2017 Baidu, Inc. All Rights Reserved.
 * 
 * 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 com.baidu.duer.dcs.http.utils;

import android.os.Handler;
import android.os.Looper;

import java.util.concurrent.Executor;
import java.util.concurrent.Executors;

/**
 * 请求回调处理类
 * <p>
 * Created by guxiuzhong@baidu.com on 2017/5/15.
 */
public class Platform {
    private static final Platform PLATFORM = findPlatform();

    public static Platform get() {
        return PLATFORM;
    }

    private static Platform findPlatform() {
        return new Android();
    }

    public Executor defaultCallbackExecutor() {
        return Executors.newCachedThreadPool();
    }

    public void execute(Runnable runnable) {
        defaultCallbackExecutor().execute(runnable);
    }

    /**
     * android 平台下用于回调到UI线程的辅助类
     */
    private static final class Android extends Platform {
        @Override
        public Executor defaultCallbackExecutor() {
            return new MainThreadExecutor();
        }

        static class MainThreadExecutor implements Executor {
            private final Handler handler = new Handler(Looper.getMainLooper());

            @Override
            public void execute(Runnable r) {
                handler.post(r);
            }
        }
    }
}