Question

我使用以下代码获取cpu percetange（类似于62.5465％），但似乎需要很长时间才能刷新/更新，除非您手动导航到另一个活动然后返回。有没有办法强制信息每秒更新一次？任何一个人都会受到赞赏。

private String ReadCPUinfo()
 {
  ProcessBuilder cmd;
  String result="";

  try{
   String[] args = {"/system/bin/cat", "/proc/cpuinfo"};
   cmd = new ProcessBuilder(args);

   Process process = cmd.start();
   InputStream in = process.getInputStream();
   byte[] re = new byte[1024];
   while(in.read(re) != -1){
    System.out.println(new String(re));
    result = result + new String(re);
   }
   in.close();
  } catch(IOException ex){
   ex.printStackTrace();
  }
  return result;
 }

用于在TextView中显示文本。

device.setText(Html.fromHtml(  
"CPU Speed: "  + readUsage() * 100 
));

Answer 1

Timer和TimerTask可以使用。

Timer timer = new Timer();
MyTimerTask myTimerTask = new MyTimerTask();

timer.schedule(myTimerTask, 0, 1000); // 0 Delay, Repeat after 1 second

您的MyTimerTask应该是这样的

class MyTimerTask extends TimerTask 
{
    public void run() 
    {
        runOnUiThread(new Runnable()
        {
            @Override
            public void run() 
            {
                device.setText(Html.fromHtml("CPU Speed: " + readUsage() * 100));
            }
        }
    }
}

修改

您也可以使用此方法

device.postDelayed(new Runnable() { @Override public void run() { device.setText(Html.fromHtml("CPU Speed: " + readUsage() * 100)); } }, 1000);

强制刷新/更新数据读取

1 个答案: