按下按钮时录制的音频在我的android设备上缺少持续时间

Question

I am facing an issue that on button touch i start recording audio in my android application, but when i plays the recorded audio it is missing some duration of the recorded audio.

Here is my code snippet to start recording voice on a button touch given by:

    public void start() {

    myRecorder = new MediaRecorder();
    myRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
    myRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
    myRecorder.setAudioEncoder(MediaRecorder.OutputFormat.AMR_NB);
    myRecorder.setOutputFile(outputFile);

    try {
        myRecorder.prepare();

    } catch (IOException e) {
        e.printStackTrace();
    }
    myRecorder.start();
    text.setText("Recording point: Recording...");

}

On sensing touch event i starts calling this start(); function. Can any body tell me any alternative solution? I faced this issue on my glaxy s3 android device.

Answer 1

myRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
myRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
myRecorder.setAudioEncoder(MediaRecorder.OutputFormat.AMR_NB);
myRecorder.setOutputFile(outputFile);

The piece of code above takes some time, hence the delay between the user pressing the button ( start() being called) and the recorder actually starting the recording ( myRecorder.start() ).

You should initialize the recorder and get it ready before the button is pressed. Just move the above piece of code elsewhere, eg onCreate() . Since I don't know the context of this code, I cannot tell you exactly where.