如何知道MediaRecorder是否处于运行状态？

Question

我编写了一个代码来使用 MediaRecorder 录制通话对话的音频。

我如何知道 MediaRecorder 是否处于运行状态，以停止录制。 就像

boolean running;
MediaRecorder mr;
//what should i assign to running?        
if(running){
   mr.stop()
}

上面的代码只是一个例子..如果您不明白我的问题，请告诉我..我会用实际代码清楚地解释..

我想知道的是“MediaRecorder处于哪种状态？” ->录音/发布/准备/初始/等等..

Answer 1

您无法直接获取状态，请参阅 http:// code.google.com/p/android/issues/detail?id=800

当媒体播放器达到某个状态时，您需要在侦听器中手动设置一个变量，以便记住当前状态。

还有这个讨论：
http://www.mail-archive.com/[电子邮件受保护]/msg35320.html

Answer 2

   String flag = "0";


         public void audioRecordStart(){
            if (ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.RECORD_AUDIO) == PackageManager.PERMISSION_GRANTED && ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) {
               try {
                    if (flag.equals("1")){
                       // It means recorder is already on recording state.
                    }
                    else{
                       myAudioRecorder.prepare();
                       myAudioRecorder.start();
                       flag = "1";
                    }
                } catch (IllegalStateException ise) {
                    // make something ...
                } catch (IOException ioe) {
                    // make something
                }
                Toast.makeText(getApplicationContext(), "Recording started", Toast.LENGTH_LONG).show();
            }
            else {
                getAudioPermission();
            }
        }

        public void audioRecordStop() {
            if (flag.equals("0")){
               // It means recorder is already stopped state.
            }
            else {
                myAudioRecorder.stop();
                myAudioRecorder.release();
                myAudioRecorder = null;
                flag = "0";
                Toast.makeText(getApplicationContext(), "Audio Recorder successfully", Toast.LENGTH_LONG).show();
            }
        }

Answer 3

const mediaRecorder = new MediaRecorder(...)
mediaRecorder.start();
console.log(mediaRecorder.state);
// Will return "recording"
// Other possible states are "inactive" and "paused"
if (mediaRecorder.state != "inactive") {
  mediaRecorder.stop();
}

参考：
https://developer.mozilla.org/en-US/文档/Web/API/MediaRecorder/状态