Android Question java.lang.RuntimeException: Object should first be initialized (B4XView)

[Roland Obeng]

Hi
I am migrating to B4APages project from B4A default project and having this error with AnotherDatePicker.

Any ideas why I am getting this error?

*** Service (starter) Create ***
** Service (starter) Start **
** Activity (main) Create (first time) **
Call B4XPages.GetManager.LogEvents = True to enable logging B4XPages events.
** Activity (main) Resume **
Error occurred on line: 150 (AnotherDatePicker)
java.lang.RuntimeException: Object should first be initialized (B4XView).
at anywheresoftware.b4a.AbsObjectWrapper.getObject(AbsObjectWrapper.java:67)
at anywheresoftware.b4a.objects.B4XViewWrapper.getViewObject(B4XViewWrapper.java:104)
at anywheresoftware.b4a.objects.B4XViewWrapper.getColor(B4XViewWrapper.java:417)
at b4a.example.anotherdatepicker._datefield_textchanged(anotherdatepicker.java:553)
at java.lang.reflect.Method.invoke(Native Method)
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 anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:157)
at anywheresoftware.b4a.objects.EditTextWrapper$1.afterTextChanged(EditTextWrapper.java:83)
at android.widget.TextView.sendAfterTextChanged(TextView.java:12365)
at android.widget.TextView.setText(TextView.java:7196)
at android.widget.TextView.setText(TextView.java:6994)
at android.widget.EditText.setText(EditText.java:149)
at android.widget.TextView.setText(TextView.java:6946)
at android.widget.TextView.setTransformationMethodInternal(TextView.java:2824)
at android.widget.Editor.setTransformationMethod(Editor.java:8226)
at android.widget.TextView.setTransformationMethod(TextView.java:2796)
at android.widget.TextView.applySingleLine(TextView.java:11926)
at android.widget.TextView.setSingleLine(TextView.java:11899)
at anywheresoftware.b4a.objects.EditTextWrapper.setSingleLine(EditTextWrapper.java:140)
at b4a.example.anotherdatepicker$ResumableSub_DesignerCreateView.resume(anotherdatepicker.java:733)
at b4a.example.anotherdatepicker._designercreateview(anotherdatepicker.java:676)
at java.lang.reflect.Method.invoke(Native Method)
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 anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:157)
at anywheresoftware.b4a.objects.CustomViewWrapper.AfterDesignerScript(CustomViewWrapper.java:61)
at anywheresoftware.b4a.keywords.LayoutBuilder.loadLayout(LayoutBuilder.java:147)
at anywheresoftware.b4a.objects.PanelWrapper.LoadLayout(PanelWrapper.java:134)
at anywheresoftware.b4a.objects.B4XViewWrapper.LoadLayout(B4XViewWrapper.java:329)
at b4a.example.b4xdateform._b4xpage_created(b4xdateform.java:69)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.debug.Debug.CallSub4(Debug.java:318)
at anywheresoftware.b4a.debug.Debug.CallSubNew2(Debug.java:285)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.keywords.Common.CallSubDebug2(Common.java:1087)
at b4a.example.b4xpagesmanager._createpageifneeded(b4xpagesmanager.java:1070)
at b4a.example.b4xpagesmanager._showpageandremovepreviouspages(b4xpagesmanager.java:481)
at b4a.example.b4xpages._showpageandremovepreviouspages(b4xpages.java:44)
at b4a.example.b4xmainpage._cmdlogin_click(b4xmainpage.java:97)
at java.lang.reflect.Method.invoke(Native Method)
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 anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:157)
at anywheresoftware.b4a.BA.raiseEvent(BA.java:201)
at anywheresoftware.b4a.objects.ViewWrapper$1.onClick(ViewWrapper.java:80)
at android.view.View.performClick(View.java:7659)
at android.view.View.performClickInternal(View.java:7636)
at android.view.View.-$$Nest$mperformClickInternal(Unknown Source:0)
at android.view.View$PerformClick.run(View.java:30156)
at android.os.Handler.handleCallback(Handler.java:958)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loopOnce(Looper.java:205)
at android.os.Looper.loop(Looper.java:294)
at android.app.ActivityThread.main(ActivityThread.java:8177)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:552)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:971)
Message longer than Log limit (4000). Message was truncated.

 

[Roland Obeng]

I have resolved the issue.

I was using
B4XPages.AddPage("df", df)
B4XPages.ShowPageAndRemovePreviousPages("df")

instead of
B4XPages.AddPageAndCreate("df",df)
B4XPages.ShowPage("df")

Thanks