Question

我的操作系统是JellyBean。我有一个Android服务，它每5分钟收集一次Logcat日志并保存到txt文件。但有一个问题。首先，当我没有任何线程进行编码时，就像那样

@Override
public void onCreate()
{
        // TODO Auto-generated method stub
     Toast.makeText(getApplicationContext(), "Service Üretildi", 1).show();
     super.onCreate();
     process = Runtime.getRuntime()
                    .exec("logcat -d -b main -v time");
.
.   
.
}

没有问题。应用程序正确收集系统日志。但是当我在TimerTask中使用线程时它只能记录TestService的调试日志。我该怎么办？

public class TestService extends Service
 {

    @Override
    public void onCreate()
    {
        // TODO Auto-generated method stub
        Toast.makeText(getApplicationContext(), "Service Üretildi", 1).show();
        super.onCreate();
        runService();

    }

    private void runService()
    {
        timer.scheduleAtFixedRate(new runningTask(), 0, 300 * 1000);
    }

    private class runningTask extends TimerTask
    {

        @Override
        public void run()
        {
            Log.i("LOGTEST", "LOGTEST");

            try
            {
                process = Runtime.getRuntime()
                        .exec("logcat -d -b main -v time");
            }
            catch (IOException e)
            {
                Log.e("LOGTEST", e.getMessage());
            }

            Log.i("LOGTEST", "COLLECTED");
            bufferedReader = new BufferedReader(new InputStreamReader(
                    process.getInputStream()));

            StringBuilder log = new StringBuilder();
            String line;
            try
            {
                while ((line = bufferedReader.readLine()) != null)
                {
                    log.append(line);
                    log.append("\n");
                }
                // log = stabilizing(log);
                bufferedReader.close();
            }
            catch (IOException e)
            {
                Log.e("LOGTEST", e.getMessage());
            }

            String logFilePath = Environment.getExternalStorageDirectory()
                    + File.separator + "AAAA" + i + ".txt";
            i++;
            File logFile = new File(logFilePath);
            if (!logFile.exists())
                try
                {
                    logFile.createNewFile();
                    FileOutputStream outStream = new FileOutputStream(logFile,
                            true);
                    byte[] buffer = log.toString().getBytes();

                    outStream.write(buffer);
                    outStream.close();
                }
                catch (IOException e)
                {
                    Log.e("LOGTEST", e.getMessage());
                }

                // Runtime.getRuntime().exec("logcat -c");
                finally
                {
                    process.destroy();;
                }

        }

    }



}

Answer 1

我的理解是，自JellyBean版本（4.2）以来，无法在非root用户设备上执行此操作。如果您设备已root，则应该能够访问系统日志。如果您没有root设备，我想您只能访问应用程序内部生成的日志。

Android线程不会读取Logcat日志

1 个答案: