如何启动一个服务的新主题？ [英] How to start a new Thread in a service?

问题描述

我开发一个Android应用程序，我做一些繁重的工作（从在线网页带来的数据和分析它存储在数据库）的服务。目前，它正在采取有关20+分钟，这个时候我的UI是卡住了。我在考虑使用一个线程服务，使我的用户界面不会被卡住，但它给错误。我现在用的是下面的code：

I am developing an Android app and I am doing some heavy work (bringing data from an online web page and parsing it to store in database) in a service. Currently, it is taking about 20+ mins and for this time my UI is stuck. I was thinking of using a thread in service so my UI doesn't get stuck but it is giving error. I am using the following code:

Thread thread = new Thread()
{
      @Override
      public void run() {
          try {
              while(true) {
                  sleep(1000);
                  Toast.makeText(getBaseContext(), "Running Thread...", Toast.LENGTH_LONG).show();
              }
          } catch (InterruptedException e) {
           Toast.makeText(getBaseContext(), e.toString(), Toast.LENGTH_LONG).show();
          }
      }
  };

thread.start();

这个简单的code是给运行时错误。就算我取出while循环，它仍然无法正常工作。 请，任何一个可以告诉我什么错误，我做的。很显然，我从一本电子书直接复制此code。这是假设的工作，但它不是。

This simple code is giving run time error. Even If I take out the while loop, it is still not working. Please, can any one tell me what mistake I am doing. Apparently, I copied this code directly from an e-book. It is suppose to work but its not.

推荐答案

新线程的创建从Android的样本采取的示例（Android为8 \ SampleSyncAdapter的\ src \ COM \例如\机器人\ samplesync \客户端\ NetworkUtilities.java）：

Example of new thread creation taken from Android samples (android-8\SampleSyncAdapter\src\com\example\android\samplesync\client\NetworkUtilities.java):

public static Thread performOnBackgroundThread(final Runnable runnable) {
    final Thread t = new Thread() {
        @Override
        public void run() {
            try {
                runnable.run();
            } finally {

            }
        }
    };
    t.start();
    return t;
}

可运行是包含您的网络运营了Runnable。

runnable is the Runnable that contains your Network operations.

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