Android Question SOLVED Error while clearing a list...

[tigrot]

Hi everybody,
I have this error the second time I clear the list "righe".
I have to say that the variable righe is defined in Process_Globals.

rs232_normalizza (B4A line: 176)
righe.Clear
java.lang.UnsupportedOperationException
at java.util.AbstractList.remove(AbstractList.java:638)
at java.util.AbstractList$SimpleListIterator.remove(AbstractList.java:75)
at java.util.AbstractList.removeRange(AbstractList.java:658)
at java.util.AbstractList.clear(AbstractList.java:466)
at anywheresoftware.b4a.objects.collections.List.Clear(List.java:69)
at it.logicdata.wgcnremote.rs232._normalizza(rs232.java:878)
at it.logicdata.wgcnremote.rs232._btnsend_click(rs232.java:674)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:169)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:157)
at anywheresoftware.b4a.BA.raiseEvent(BA.java:153)
at anywheresoftware.b4a.objects.ViewWrapper$1.onClick(ViewWrapper.java:78)
at android.view.View.performClick(View.java:4084)
at android.view.View$PerformClick.run(View.java:16966)
at android.os.Handler.handleCallback(Handler.java:615)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4745)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)

What I'm missing.

Thank you for you time!

Mauro

 

[tigrot]

Additional info: the array is correct as well before the failing operation...

 

[tigrot]

Maybe I solved the issue. I Initialised instead of Clear and now it works.

 

[Erel]

How did you set the list? If it wrapped an array then the wrapped list is read-only.

 

[tigrot]

I do a list.addall(string,split(chr(10))). I use to reformat the output to a tool machine, adding CR & LF if needed. Now it works without any problem, but now I have an issue in USBSERIAL. But let's open another thread...