在后台的Andr​​oid不断加速处理 [英] Android continuous acceleration processing in background

问题描述

我开发需要连续处理加速度值一段时间的应用程序（约一小时） - 是的，我真的想这样做的。在处理涉及做一些计算和更新UI不时。加速度是（前台）服务中收集 - 收集的加速，如果用户最小化应用程序，以及应该发生

我的问题是：什么是执行这个最合适的模式。我不想处理，以使应用程序UI响应。

现在，我收集加速度数据在UI线程（在服务）。所收集的数据比传递到一类不会一些计算和基于它们播放器意图，其被登记在主活动来更新用户界面。

我应该在一个工作线程来收集加速度数据的服务吗？ （这甚至有可能）？
或者我应该做的另一线程中处理？ （如何将这样做没有挨饿无论是UI /加速收集线程或处理线程的最佳方式）。

谢谢！

解决方案

尝试一个AsyncTask的

 公共类AsyncTaskTestActivity延伸活动{   @覆盖
   公共无效的onCreate（捆绑savedInstanceState）{
      super.onCreate（savedInstanceState）;
      的setContentView（R.layout.main）;      新PostTask（）执行（）;
   }   //我们的任务类的定义
   私有类PostTask扩展的AsyncTask＆LT;字符串，整数，字符串＆GT; {
   @覆盖
   在preExecute保护无效（）{
      super.on preExecute（）;
      displayProgressBar（工作......）;
   }   @覆盖
   保护字符串doInBackground（字符串... PARAMS）{
         do_background_Stuff（）;         //每当要在UI线程中运行的东西，然后回来加工调用此方法
         publishProgress（ⅰ）;
      }
      返回全部完成！
   }   @覆盖
   保护无效onProgressUpdate（整数...值）{
      super.onProgressUpdate（值）;
      updateProgressBar（值[0]）;
   }   @覆盖
   保护无效onPostExecute（字符串结果）{
      super.onPostExecute（结果）;
      dismissProgressBar（）;
   }
   }
}
 

I am developing an app that needs to process acceleration values continuously for some time (approx. an hour) - yes, I would really like to do it that way. The processing involves doing some calculations and updating the UI from time to time. The acceleration is collected inside a (foreground) service - collecting acceleration should happen if the user minimizes the app as well.

My question is: what would be the most appropriate pattern to implement this. I don't want the processing to make the app UI unresponsive.

Right now I'm collecting acceleration data in the UI thread (in the Service). The collected data is than passed to a class that does some calculations and based on them broadcasts an Intent, which is registered in the Main activity to update the UI.

Should I be collecting acceleration data in a worker Thread in a service? (Is this even possible)? Or should I do the processing in another Thread? (How would be the best way to do this without starving either the UI/acceleration collection Thread or the processing Thread).

Thanks!

解决方案

Try an AsyncTask

public class AsyncTaskTestActivity extends Activity {

   @Override
   public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.main);

      new PostTask().execute();
   }

   // The definition of our task class
   private class PostTask extends AsyncTask<String, Integer, String> {
   @Override
   protected void onPreExecute() {
      super.onPreExecute();
      displayProgressBar("Working...");
   }

   @Override
   protected String doInBackground(String... params) {
         do_background_Stuff();

         // call this method whenever you want to run something in the UI thread and then get back to processing
         publishProgress(i);
      }
      return "All Done!";
   }

   @Override
   protected void onProgressUpdate(Integer... values) {
      super.onProgressUpdate(values);
      updateProgressBar(values[0]);
   }

   @Override
   protected void onPostExecute(String result) {
      super.onPostExecute(result);
      dismissProgressBar();
   }
   }
}

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