java限制用户仅以代号1录制3秒钟的视频

Question

我需要录制的视频从用户在codename one我与此完成。但我想限制用户不录制长度超过3 seconds的视频

有没有办法在录制后剪切视频，或者我可以在3秒钟后停止录制

Answer 1

我在另一个线程上发现了这个，还没有经验，但这可能会帮助你

Media = MediaManager.createMediaRecorder("filename.xyz", MediaManager.getMediaRecorderingMimeType());
Button doneButton = new Button("DONE");

doneButton.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent evt) {
            stopRecord(false);
        }
    });

   public void stopRecord(boolean timeElapsed)
   {
       answertiming.cancel();
       media.pause();
       media.cleanup();
       if(timeElapsed)
            Dialog.show("SUCCESS","Your time is up system has saved your answer, The file path for the recording is " + p, "OK",null);
       else
            Dialog.show("SUCCESS","You have successfully answered the question System has saved your answer, The file path for the recording is " + p, "OK",null);
   }

我现在的方法是在这个f.e.周围放置一个3秒的计时器

UITimer timer = new UITimer(new Runnable() {
            @Override
            public void run() {
                 stopreRecord(true);
});
timer.schedule(3000, false, f);

Answer 2

目前，除了使用本机接口功能与本机OS http://www.codenameone.com/how-do-i -access-native-device-functionality-invoke-native-interfaces.html集成之外，在Codename One中无法实现这一点