/*
* Copyright (C) 2012 www.amsoft.cn
*
* 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.ab.task.thread;
import java.util.HashMap;
import java.util.List;
import java.util.concurrent.Executor;
import com.ab.task.AbTaskItem;
import com.ab.task.AbTaskListListener;
import com.ab.task.AbTaskObjectListener;
import android.os.Handler;
import android.os.Message;
// TODO: Auto-generated Javadoc
/**
* © 2012 amsoft.cn
* 名称:AbTaskPool.java
* 描述:用andbase线程池
*
* @author 还如一梦中
* @version v1.0
* @date:2013-5-23 上午10:10:53
*/
public class AbTaskPool{
/** 单例对象 The http pool. */
private static AbTaskPool abTaskPool = null;
/** 线程执行器. */
public static Executor mExecutorService = null;
/** 存放返回的任务结果. */
private static HashMap<String,Object> result;
/** 下载完成后的消息句柄. */
private static Handler handler = new Handler() {
@Override
public void handleMessage(Message msg) {
AbTaskItem item = (AbTaskItem)msg.obj;
if(item.getListener() instanceof AbTaskListListener){
((AbTaskListListener)item.getListener()).update((List<?>)result.get(item.toString()));
}else if(item.getListener() instanceof AbTaskObjectListener){
((AbTaskObjectListener)item.getListener()).update(result.get(item.toString()));
}else{
item.getListener().update();
}
result.remove(item.toString());
}
};
/**
* 构造线程池.
*/
private AbTaskPool() {
result = new HashMap<String,Object>();
mExecutorService = AbThreadFactory.getExecutorService();
}
/**
* 单例构造图片下载器.
*
* @return single instance of AbHttpPool
*/
public static AbTaskPool getInstance() {
if (abTaskPool == null) {
abTaskPool = new AbTaskPool();
}
return abTaskPool;
}
/**
* 执行任务.
* @param item the item
*/
public void execute(final AbTaskItem item) {
mExecutorService.execute(new Runnable() {
public void run() {
try {
//定义了回调
if (item.getListener() != null) {
if(item.getListener() instanceof AbTaskListListener){
result.put(item.toString(), ((AbTaskListListener)item.getListener()).getList());
}else if(item.getListener() instanceof AbTaskObjectListener){
result.put(item.toString(), ((AbTaskObjectListener)item.getListener()).getObject());
}else{
item.getListener().get();
result.put(item.toString(), null);
}
//交由UI线程处理
Message msg = handler.obtainMessage();
msg.obj = item;
handler.sendMessage(msg);
}
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
}