Programmatically check if mic on Android is currently in use

Question

There is a way to check if microphone on Android phone is recording anything? I didn't find anything in AudioRecorder.
Update:

int sampleRateInHz = 8000;//8000 44100, 22050 and 11025
int channelConfig = AudioFormat.CHANNEL_CONFIGURATION_MONO;
int audioFormat = AudioFormat.ENCODING_PCM_16BIT;
int bufferSize = AudioRecord.getMinBufferSize(sampleRateInHz, channelConfig, audioFormat);


public int getRecordingState() {
    AudioRecord audioRecord = new AudioRecord(MediaRecorder.AudioSource.DEFAULT, sampleRateInHz, channelConfig, audioFormat, bufferSize);
    return audioRecord.getRecordingState();
}

Possible duplicate: http://stackoverflow.com/questions/22677749/how-to-check-if-android-microphone-is-available-for-use — Kristy Welsh, Dec 11 '14 at 21:12

score 0 · Answer 1 · edited May 23 '17 at 11:50

0

I saw a number of things you could try. From AudioRecord - getRecordingState() - Returns the recording state of the AudioRecord instance.

Or you can try testing: read(byte[], int, int), read(short[], int, int) or read(ByteBuffer, int) methods to see if the buffers are growing in size.

Edit: Here are some examples on how to read the buffer and an explanation:

Understanding of the Audio Recorder read() buffer

Android AudioRecord example

edited May 23 '17 at 11:50

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answered Dec 11 '14 at 22:01

Kristy Welsh

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So I wrote the method (see update please). Doesn't look like work either. It always returns 1, i.e. int RECORDSTATE_STOPPED... – Kirill Dec 11 '14 at 22:19

Programmatically check if mic on Android is currently in use

1 Answers1