Why AudioRecord is not recording sound when device fall asleep even when I use WakeLock?

Question

I\'m recording the sound from device with AudioRecord and write it to .wav file and I need it to keep recording and writing in file even wh

Answer 1

You should start recording/initialize AudioRecord in independent thread, and start this thread you need from foreground Service. Also right before start of recording change thread priority like in example below:

android.os.Process.setThreadPriority(android.os.Process.THREAD_PRIORITY_AUDIO);

AudioRecord record = new AudioRecord(MediaRecorder.AudioSource.MIC,
            sampleRate,
            AudioFormat.CHANNEL_IN_MONO,
            AudioFormat.ENCODING_PCM_16BIT,
            bufferSize);
record.startRecording();