安卓开发02：使用线程池ThreadPoolExecutor 处理多个任务

//创建线程池
private final ThreadPoolExecutor threadPoolExecutor =
        new ThreadPoolExecutor(3, 10, 100,
                TimeUnit.MILLISECONDS, new LinkedBlockingDeque<>());
// 定义线程
Runnable test1Runnable;
Runnable test2Runnable;
Runnable test3Runnable;
//定义处理任务的线程方法
private Runnable createTest1Runnable(){
		//lambda表达式
        return () -> {
            //业务逻辑1
            /**
        		设置标志位testFlag（初始值true）
                退出页面在onBackPressed()回调函数或
                onDestroy()回调函数中设置其为false，进而结束线程
         	*/
            while (testFlag) {
            	//业务逻辑2
            }
        };
    }
//线程赋值
test1Runnable = createTest1Runnable();
//放入线程池执行
threadPoolExecutor.execute(test1Runnable);

//在回调函数onDestroy()中关闭线程
threadPoolExecutor.shutdownNow();