Android Question B4xTable.SetData error

makis_best · May 9, 2019

Hello all

I try to pass a list to b4xtabe using

B4X:

B4XTable1.SetData(ItemList)

But when I run the application I get the error

Error occurred on line: 588 (B4XTable)
java.lang.ClassCastException: gr.john.generalclass$_itemtype cannot be cast to java.lang.Object[]
at gr.john.b4xtable$ResumableSub_SetData.resume(b4xtable.java:470)
at gr.john.b4xtable._setdata(b4xtable.java:337)
at gr.john.document$ResumableSub_LoadGeneralClassDataList.resume(document.java:945)
at gr.john.document._loadgeneralclassdatalist(document.java:916)
at gr.john.document._activity_resume(document.java:906)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at anywheresoftware.b4a.shell.Shell.runMethod(Shell.java:732)
at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:351)
at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:255)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:144)
at anywheresoftware.b4a.BA.raiseEvent(BA.java:176)
at gr.john.document$ResumeMessage.run(document.java:310)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5376)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:908)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:703)

Why?
What it means?

makis_best · May 9, 2019

Anyone?

josejad · May 9, 2019

Hi:

I haven’t tried B4XTables, but probably it would be easier for the forum people to help you if you give us all the info, to avoid people have to imagine what’s happening.

Please read
https://www.b4x.com/android/forum/threads/for-new-er-members-how-to-post-a-question-issue.96964/

where’s your code? What kind of elements are in the list?
Try to compile in Debug mode, what line raises the error? .....

Erel · May 10, 2019

Each item in the list should be made of an array of objects. One object (number or string) per column.

Based on the error message you haven't built the list correctly.

makis_best · May 10, 2019

I create the list using this code-->

B4X:

Dim N As ItemType
            N.But = ""
            N.OrderNum = Main.General1.OrderNum
            N.Gid = Main.General1.Client_GID
            N.LineAA = Main.General1.LineAA
            N.Code    = ItemTable_All_Items.GetValue(0,row)
            N.Description = ItemTable_All_Items.GetValue(1,row)
            N.Munit = ItemTable_All_Items.GetValue(2,row)
            N.Price = ItemTable_All_Items.GetValue(3,row)
            N.Quantity = ItemTable_All_Items.GetValue(4,row)
            N.Perc1 = Main.General1.Percent1
            N.Perc2 = Main.General1.Percent2
            N.AxiaProEkptosis = Total1
            N.KathariAxia = KathariAxia
            N.PosostoFPA = Main.General1.VatPercent
            N.AxiaFPA = AxiaFPA
            N.Comment = ""
            ItemList.Add(N)

I can't have type into list?

makis_best · May 11, 2019

Ok... I work over it 9 days now and I can't figure out.

Any help?

josejad · May 11, 2019

Have you tried with an array?

Data is a list. Each item in the list is an array of objects that represents a row.
Example

B4X:

Dim data As List
data.Initialize
data.Add(Array(1, 2, 3))
data.Add(Array(4, 5, 6))
B4XTable1.SetData(data)

Erel · May 12, 2019

As written several times above, each item in the list must be an array of objects.

makis_best said:
I can't have type into list?

No.

makis_best · May 12, 2019

Ok....

I understand..... So no point to use type in my code.
I change my code to fit needs of b4xtable.
Thank you.

josejad · May 12, 2019

What about something like:

B4X:

data.Add(Array(N.OrderNum,N.Gid,N.LineAA, ...))

Remember that there are currently three types: TEXT, NUMBERS and DATES.

Android Question B4xTable.SetData error

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