Android Question Problem Running B4A and Installing App in Debug Mode through USB

walterf25 · Feb 19, 2023

Hi everyone, I am facing a very weird issue, everything had been working as expected until a few days ago, I have not made any changes to the USB Driver or anything else for that matter.

The problem is that I am trying to finish an app, but I can not install the app in debug mode, If I install the app in release Mode then everything seems to work, but I need to do it in debug mode as there's some things I need to add/change.

The error I am seeing is the following:

java.net.SocketTimeoutException: Poll timed out
at libcore.io.IoBridge.poll(IoBridge.java:869)
at java.net.PlainSocketImpl.socketAccept(PlainSocketImpl.java:196)
at java.net.AbstractPlainSocketImpl.accept(AbstractPlainSocketImpl.java:451)
at java.net.ServerSocket.implAccept(ServerSocket.java:547)
at java.net.ServerSocket.accept(ServerSocket.java:515)
at anywheresoftware.b4a.shell.ShellConnector.connect(ShellConnector.java:153)
at anywheresoftware.b4a.shell.ShellConnector.run(ShellConnector.java:119)
at java.lang.Thread.run(Thread.java:920)
Shutting down VM
FATAL EXCEPTION: main
Process: ergonimics.strom, PID: 19835
java.lang.RuntimeException: Unable to create service ergonimics.strom.starter: java.lang.RuntimeException: java.lang.NullPointerException: Attempt to invoke virtual method 'void java.iutputStream.write(byte[])' on a null object reference
at android.app.ActivityThread.handleCreateService(ActivityThread.java:4953)
at android.app.ActivityThread.access$1900(ActivityThread.java:310)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2300)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loopOnce(Looper.java:226)
at android.os.Looper.loop(Looper.java:313)
at android.app.ActivityThread.main(ActivityThread.java:8663)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:567)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1135)
Caused by: java.lang.RuntimeException: java.lang.NullPointerException: Attempt to invoke virtual method 'void java.iutputStream.write(byte[])' on a null object reference
at anywheresoftware.b4a.shell.Shell.virtualAssets(Shell.java:164)
at anywheresoftware.b4a.shell.Shell.start(Shell.java:102)
at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:105)
at ergonimics.strom.starter.onCreate(starter.java:34)
at android.app.ActivityThread.handleCreateService(ActivityThread.java:4940)
... 9 more
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void java.iutputStream.write(byte[])' on a null object reference
at anywheresoftware.b4a.shell.ShellConnector.sendControlMessage(ShellConnector.java:61)
at anywheresoftware.b4a.shell.Shell.virtualAssets(Shell.java:124)
... 13 more

I also tried using the Legacy Debugger and it also works fine when I enable that, Also my computer seems to take up a lot of the cpu usage when compiling the app, maybe this is a separate issue.

Has anyone had this issue where you are not able to install the app in debug mode?

Does anyone have any ideas?

Walter

Erel · Feb 20, 2023

1. Have you tried to restart the PC?
2. Does it happen if you start a new app and run it?

walterf25 · Feb 20, 2023

Erel said:
1. Have you tried to restart the PC?
2. Does it happen if you start a new app and run it?

Hi Erel, Yes I have tried restarting the PC, and it works right after I restart the PC, but if I unplug the USB cable from the phone, and then plug it back it then it stops working, meaning I start seeing the issue describe on my post above. It also happens with any Project I try to install, I have tested with several and I see the same issue.

I don't recall ever having this issue before.

Another thing I noticed is that my PC's fan starts spinning really fast as soon as I plug my USB cable and I hit Connect in the IDE, also when the app is compiling, seems like the for some reason B4A is taking up a lot of cpu resources.

Thanks,
Walter

walterf25 · Feb 21, 2023

I seem to have the problem, not sure why this is happening but I looked at the Task Manager and I see the OpenJDK Platform Binary the cause of the issue I am seeing, as you can see in the image below, that process is taking around 16 to 18 percent of the CPU usage, when I right click on it and End Task, then I am able to compile and run the app just fine. Not sure why this is happening but at least I can now move on with my app development in debug mode.

Android Question Problem Running B4A and Installing App in Debug Mode through USB

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Erel

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Android Question Problem Running B4A and Installing App in Debug Mode through USB

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