Search code examples
javaandroidsampling

AudioRecord object not initializing in a project

When I am trying to record an audio through my Nexus 5 using following code

record = new AudioRecord(MediaRecorder.AudioSource.MIC, sampleRate, AudioFormat.CHANNEL_IN_MONO, AudioFormat.ENCODING_PCM_8BIT, BYTE_OF_SAMPLE * bufferSampleSize);
record.startRecording();

Then I am getting following exceptions in logcat:

E/AudioRecord: AudioFlinger could not create record track, status: -1
E/AudioRecord-JNI: Error creating AudioRecord instance: initialization check failed with status -1.
E/android.media.AudioRecord: Error code -20 when initializing native AudioRecord object.
E/AndroidRuntime: FATAL EXCEPTION: Thread-855
E/AndroidRuntime: Process: com.*.*, PID: 14206
E/AndroidRuntime: java.lang.IllegalStateException: startRecording() called on an uninitialized AudioRecord.
E/AndroidRuntime:     at android.media.AudioRecord.startRecording(AudioRecord.java:885)
E/AndroidRuntime:     at com.*.*.MainActivity$Looper.run(MainActivity.java:265)
E/Surface: getSlotFromBufferLocked: unknown buffer: 0x9e476d00

I've added following line in manifest file.

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

I've tested AudioRecord object not initializing. None of those solutions working.

But its working in another project. Is there anything missing?

Solution

  • Got the solution: Recently I updated my phone to Marshmallow. In Marshmallow there is a new permission system. I switched on these permissions as bellow the recording works just fine.

    enter image description here