Oscilloscope: App crashes as soon as record button is clicked while using built-in mic.

[hyPnOtICDo0g]

Actual Behaviour
Oscilloscope: The app crashes as soon as the record button is clicked while using the built-in mic.

Expected Behaviour
The shouldn't crash when the record button is clicked, and I should be able to obtain the .csv files after recording.

Steps to reproduce it
• Open the app & click on the Oscilloscope.
• Switch to built-in mic & click on record button.
• The app crashes.

Screenshots of the issue

Device used - Lenovo Phab 2
Android Version - 6.0

Would you like to work on the issue?
No.

[ho-dor]

Can you share the logcat please @hyPnOtiC-d00g

[ho-dor]

I am unable to reproduce this error @CloudyPadmal this is same as #2081. Working fine on my device.

[CloudyPadmal]

I see. @ho-dor may be it's some permission issue in microphone? 🤔

Sadly we can't expect community to share logcats. Unless they "Report" it, we could see it from Google Play console. (Couldn't see any as noone has "Report"ed it yet) Let's ask to report it.

[dheerajkotwani]

The Issue is there.
Clicking on use in-built mic and then start recording.
Permission for mic given to the app

LogCat
E/AndroidRuntime: FATAL EXCEPTION: AsyncTask #4 Process: io.pslab, PID: 8223 java.lang.RuntimeException: An error occurred while executing doInBackground() at android.os.AsyncTask$3.done(AsyncTask.java:318) at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:354) at java.util.concurrent.FutureTask.setException(FutureTask.java:223) at java.util.concurrent.FutureTask.run(FutureTask.java:242) at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:243) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607) at java.lang.Thread.run(Thread.java:760) Caused by: java.lang.NoSuchMethodError: No static method join(Ljava/lang/CharSequence;[Ljava/lang/CharSequence;)Ljava/lang/String; in class Ljava/lang/String; or its super classes (declaration of 'java.lang.String' appears in /system/framework/core-oj.jar) at io.pslab.activity.OscilloscopeActivity$CaptureTask.doInBackground(OscilloscopeActivity.java:1120) at io.pslab.activity.OscilloscopeActivity$CaptureTask.doInBackground(OscilloscopeActivity.java:960) at android.os.AsyncTask$2.call(AsyncTask.java:304) at java.util.concurrent.FutureTask.run(FutureTask.java:237) at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:243)  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)  at java.lang.Thread.run(Thread.java:760) 

[marcnause]

String.join was added with API level 26. The min API level of the app is set to 23. I can reproduce the issue on a device with Android 7.1 (API level 25).

I can work on this issue.