如何使用MediaRecorder录制音频文件并将其保存到android中的sdcard

Question

i am working on one module that will record voice and then upload to php server using MultiPartEntity.

i am able to record voice and also its saving file in sdcard but whenever i am trying to uplaod that file to PHP server (Using MPE), its not uploading and server getting blank file content.

while in my device i am able to play that voice and working fine in device. just issue with uploading. i am using the same code to upload other media like images and video and other files. all is working fine. just issue with recorded file.

This is my code to record voice.

    MediaRecorder recorder = new MediaRecorder();
    recorder.reset();

    recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
    recorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
    recorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);

    String filePath = Environment.getExternalStorageDirectory() + "/" + Environment.DIRECTORY_DCIM + "/abc.mp4";
    recorder.setOutputFile(filePath); // This is my file path to store data

    recorder.prepare();
    recorder.start();

and i am using multipart to upload this voice recording on server.

This is my MultiPartEntity code.

public class MultipartUtility {

    private static final String LINE_FEED = "\r\n";
    private static final int TIMEOUT = 60000;
    private final String boundary;
    private HttpURLConnection httpConn;
    private OutputStream outputStream;
    private PrintWriter writer;

    public MultipartUtility(String requestURL) throws IOException {

        boundary = "======" + System.currentTimeMillis() + "======";

        URL url = new URL(requestURL);
        httpConn = (HttpURLConnection) url.openConnection();
        httpConn.setUseCaches(false);
        httpConn.setDoOutput(true); // Indicates POST Method
        httpConn.setDoInput(true);
        httpConn.setReadTimeout(TIMEOUT);
        httpConn.setConnectTimeout(TIMEOUT);

        httpConn.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + boundary);

        httpConn.setRequestProperty("Connection", "Keep-Alive");

        // ================
        outputStream = httpConn.getOutputStream();
        writer = new PrintWriter(new OutputStreamWriter(outputStream, "UTF-8"), true);
    }

    public void addFormField(String name, String value) {
        writer.append("--").append(boundary).append(LINE_FEED);
        writer.append("Content-Disposition: form-data; name=\"").append(name).append("\"").append(LINE_FEED);
        //writer.append("Content-Type: text/plain; charset=UTF-8").append(LINE_FEED);
        writer.append(LINE_FEED).append(value).append(LINE_FEED);
        writer.flush();
    }

    public void addFilePart(String fieldName, File uploadFile) throws IOException {

        String fileName = uploadFile.getName();

        writer.append("--").append(boundary).append(LINE_FEED);
        writer.append("Content-Disposition: form-data; name=\"").append(fieldName).append("\"; filename=\"").append(fileName).append("\"").append(LINE_FEED);
        writer.append("Content-Type: ").append(URLConnection.guessContentTypeFromName(fileName)).append(LINE_FEED);
        writer.append("Content-Transfer-Encoding: binary").append(LINE_FEED);
        writer.append(LINE_FEED);
        writer.flush();

        FileInputStream inputStream = new FileInputStream(uploadFile);

        byte[] buffer = new byte[4096];

        int bytesRead;

        while ((bytesRead = inputStream.read(buffer)) != -1) {
            outputStream.write(buffer, 0, bytesRead);
        }

        outputStream.flush();
        inputStream.close();

        writer.append(LINE_FEED).flush();
    }

    public String execute() throws IOException {

        String response = "";

        writer.append(LINE_FEED).flush();
        writer.append("--").append(boundary).append("--").append(LINE_FEED);
        writer.close();

        int status = httpConn.getResponseCode();

        if (status == HttpURLConnection.HTTP_OK) {

            BufferedReader reader = new BufferedReader(new InputStreamReader(httpConn.getInputStream()));

            String line;

            while ((line = reader.readLine()) != null) {
                response += line;
            }

            reader.close();

        } else {
            return null;
        }

        httpConn.disconnect();

        return response;
    }

i have searched a lot on the same topic on web but not getting the exect solution for this issue.

Please help me friends. Thanx in Advance

Answer 1

Maybe this video will help you.

https://youtu.be/XANjoeEeQ1Y