Cannot create AudioRecord

[SEAN-JOU]

        java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.androidthings.assistant/com.example.androidthings.assistant.AssistantActivity}: java.lang.UnsupportedOperationException: Cannot create AudioRecord
                                                                                     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2778)
                                                                                     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2856)
                                                                                     at android.app.ActivityThread.-wrap11(Unknown Source:0)
                                                                                     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1589)
                                                                                     at android.os.Handler.dispatchMessage(Handler.java:106)
                                                                                     at android.os.Looper.loop(Looper.java:164)
                                                                                     at android.app.ActivityThread.main(ActivityThread.java:6494)
                                                                                     at java.lang.reflect.Method.invoke(Native Method)
                                                                                     at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
                                                                                     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
                                                                                  Caused by: java.lang.UnsupportedOperationException: Cannot create AudioRecord
                                                                                     at android.media.AudioRecord$Builder.build(AudioRecord.java:626)
                                                                                     at com.example.androidthings.assistant.EmbeddedAssistant$Builder.build(EmbeddedAssistant.java:706)
                                                                                     at com.example.androidthings.assistant.AssistantActivity.onCreate(AssistantActivity.java:313)

[Fleker]

Have you enabled the permission to record audio?

[SEAN-JOU]

AndroidManifest.xml
< uses-permission android:name="android.permission.RECORD_AUDIO" />
AssistantActivity.java onCreate()
ActivityCompat.requestPermissions(this, new String[]{
"com.google.android.things.permission.RECORD_AUDIO",
"com.google.android.things.permission.USE_PERIPHERAL_IO"}, 0);

yes i have . it still show "Cannot create AudioRecord......"

[Fleker]

Are there any logs related to this which may be available a little before the stacktrace? (You may need to change the filter from Show only application to No filter)

[SEAN-JOU]

1624-1624/com.example.androidthings.assistant E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.androidthings.assistant, PID: 1624
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.androidthings.assistant/com.example.androidthings.assistant.AssistantActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'boolean android.media.AudioRecord.setPreferredDevice(android.media.AudioDeviceInfo)' on a null object reference
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2778)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2856)
at android.app.ActivityThread.-wrap11(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1589)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6494)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'boolean android.media.AudioRecord.setPreferredDevice(android.media.AudioDeviceInfo)' on a null object reference
at com.example.androidthings.assistant.EmbeddedAssistant$Builder.build(EmbeddedAssistant.java:704)
at com.example.androidthings.assistant.AssistantActivity.onCreate(AssistantActivity.java:313)
at android.app.Activity.performCreate(Activity.java:7010)
at android.app.Activity.performCreate(Activity.java:7001)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1214)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2731)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2856) 
at android.app.ActivityThread.-wrap11(Unknown Source:0) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1589) 
at android.os.Handler.dispatchMessage(Handler.java:106) 
at android.os.Looper.loop(Looper.java:164) 
at android.app.ActivityThread.main(ActivityThread.java:6494) 

[Fleker]

Do you see any other errors in the logs, like failed to find I2S audio input device, using default or error configuring peripherals:?

It looks like the flag USE_VOICEHAT_I2S_DAC is true. Are you using the VoiceHat? What Android Things device are you using?