How to Pause and Resume Audio recording in android

问题

I am developing an audio recording application using MediaRecorder class. I have the following requirement:

1.When a pause button is pressed then pause recording.

2.When a resume button is pressed then resume recording where it paused. I try this link

But I am unable to implement the functionality.

Any help/suggestion would be greatly appreciated.

回答1:

Media Recorder class does not support to pause and resume , see second link class overview try to use stop and restart

How can i pause voice recording in Android?

http://developer.android.com/reference/android/media/MediaRecorder.html

http://www.techotopia.com/index.php/Android_Audio_Recording_and_Playback_using_MediaPlayer_and_MediaRecorder

回答2:

This link also may useful for those who need to pause and record audio.

https://github.com/lassana/continuous-audiorecorder

回答3:

You can refer my answer here if still have this issue.

The solution is to stop recorder when user pause and start again on resume as already mentioned in many other answers in stackoverflow. Store all the audio/video files generated in an array and use below method to merge all media files. The example is taken from mp4parser library and modified little bit as per my need.

public static boolean mergeMediaFiles(boolean isAudio, String sourceFiles[], String targetFile) {
        try {
            String mediaKey = isAudio ? "soun" : "vide";
            List<Movie> listMovies = new ArrayList<>();
            for (String filename : sourceFiles) {
                listMovies.add(MovieCreator.build(filename));
            }
            List<Track> listTracks = new LinkedList<>();
            for (Movie movie : listMovies) {
                for (Track track : movie.getTracks()) {
                    if (track.getHandler().equals(mediaKey)) {
                        listTracks.add(track);
                    }
                }
            }
            Movie outputMovie = new Movie();
            if (!listTracks.isEmpty()) {
                outputMovie.addTrack(new AppendTrack(listTracks.toArray(new Track[listTracks.size()])));
            }
            Container container = new DefaultMp4Builder().build(outputMovie);
            FileChannel fileChannel = new RandomAccessFile(String.format(targetFile), "rw").getChannel();
            container.writeContainer(fileChannel);
            fileChannel.close();
            return true;
        }
        catch (IOException e) {
            Log.e(LOG_TAG, "Error merging media files. exception: "+e.getMessage());
            return false;
        }
    }

Use flag isAudio as true for Audio files and false for Video files.

来源：https://stackoverflow.com/questions/21900792/how-to-pause-and-resume-audio-recording-in-android

标签

android

audio

android-mediaplayer

resume