相关疑难解决方法(0)

以下代码:

long msBefore = System.currentTimeMillis();
//Thread.currentThread().setPriority(Thread.MAX_PRIORITY);
try
{Thread.sleep(200);
} catch (InterruptedException e){}
System.out.println("Time: " + (System.currentTimeMillis() - msBefore));

印刷品:

Time: 578
Time: 594
Time: 625
Time: 640
Time: 641
Time: 609
Time: 625
Time: 625
Time: 610
Time: 609
Time: 625
Time: 625
Time: 422
Time: 625
Time: 594
Time: 609
Time: 625
Time: 594
Time: 594
Time: 625

问题出在哪里？

我有这个工作代码.我需要它只在有限的时间内录制,而无需用户点击任何内容.我该怎么做呢？

    MediaRecorder recorder = new MediaRecorder();
File outputFile = new File(file);
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
recorder.setOutputFile(outputFile.getAbsolutePath());
try {
    recorder.prepare();
} catch (IllegalStateException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
} catch (IOException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
}
recorder.start();
recorder.setMaxDuration(60000);
// stop
recorder.stop();
recorder.reset(); 
recorder.release();