Android MediaRecorder - Start Failed: -2147483648 on 2.3.3

问题

The MediaRecorder works on other versions of Android but not on 2.3.3:

try {

    MediaRecorder mRecorder = new MediaRecorder();
    mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
    mRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
    mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);
    mRecorder.setOutputFile( path + "r_" + FileName );

    int version = android.os.Build.VERSION.SDK_INT;
    Log.d("MP3Downloader", "V: " + version );

    if( version >= 8 ) {
        mRecorder.setAudioEncodingBitRate(16);
        mRecorder.setAudioSamplingRate(44100);
        mRecorder.setAudioChannels(2);
    }

    mRecorder.prepare();
    mRecorder.start();
} catch (Exception e) {
    Log.e("MP3Downloader", "MediaRecorder Failed: " + e.getMessage() );
}

I get error Start Failed: -2147483648 on version 2.3.3 only. I have not found this problem addressed anywhere else.

I also tried:

try {

    MediaRecorder mRecorder = new MediaRecorder();
    mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
    mRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
    mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);

    FileOutputStream fos = new FileOutputStream( "r_" + FileName);

    mRecorder.setOutputFile( fos.getFD() );



    int version = android.os.Build.VERSION.SDK_INT;
    Log.d("MP3Downloader", "V: " + version );

    if( version >= 8 ) {
        mRecorder.setAudioEncodingBitRate(16);
        mRecorder.setAudioSamplingRate(44100);
        mRecorder.setAudioChannels(1);
    }

    mRecorder.prepare();
    mRecorder.start();
} catch (Exception e) {
    Log.e("MP3Downloader", "MediaRecorder Failed: " + e.getMessage() );
}

But, I get exception: "(Read-only file system)"

I have permissions:

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />

回答1:

change your output format with 3gpp.

来源：https://stackoverflow.com/questions/11731785/android-mediarecorder-start-failed-2147483648-on-2-3-3