Android Question custom view error during release build, not debug

RichyK68 · Jan 21, 2018

Hi,

When I'm running and testing in Debug mode everything works fine. When I build to release I get this:

** Activity (review) Create, isFirst = true **
starrating_designercreateview (java line: 174)
java.lang.RuntimeException: java.lang.ClassCastException: java.lang.String cannot be cast to android.widget.TextView
at anywheresoftware.b4a.keywords.LayoutBuilder.loadLayout(LayoutBuilder.java:166)
at anywheresoftware.b4a.objects.PanelWrapper.LoadLayout(PanelWrapper.java:134)
at richkidsoftware.myapp.starrating._designercreateview(starrating.java:174)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:169)
at anywheresoftware.b4a.objects.CustomViewWrapper.AfterDesignerScript(CustomViewWrapper.java:67)
at anywheresoftware.b4a.keywords.LayoutBuilder.loadLayout(LayoutBuilder.java:158)
at anywheresoftware.b4a.objects.PanelWrapper.LoadLayout(PanelWrapper.java:134)
at richkidsoftware.myapp.review._activity_create(review.java:372)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:169)
at richkidsoftware.myapp.review.afterFirstLayout(review.java:102)
at richkidsoftware.myapp.review.access$000(review.java:17)
at richkidsoftware.myapp.review$WaitForLayout.run(review.java:80)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6776)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1520)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1410)
Caused by: java.lang.ClassCastException: java.lang.String cannot be cast to android.widget.TextView
at anywheresoftware.b4a.objects.CustomViewWrapper.AfterDesignerScript(CustomViewWrapper.java:44)
at anywheresoftware.b4a.keywords.LayoutBuilder.loadLayout(LayoutBuilder.java:158)
... 20 more

It is due to the custom view I am using on the layout.

What am I doing wrong?

Thanks,

Richard

Erel · Jan 21, 2018

Can you upload a project that demonstrates this issue?

RichyK68 · Jan 21, 2018

Hi,

Sure thing! I just knocked this up in a couple of minutes. Works in debug, crashes in release.

Maybe I'm doing something wrong ...

Richard

Erel · Jan 22, 2018

The problem is here:

B4X:

Public Sub DesignerCreateView (Base As Panel, Lbl As Label, Props As Map)
   mBase = Base
   Base.LoadLayout("MyCustomView")
       
End Sub

You cannot load a layout file while the current layout file is loaded. The solution is simple.
Change it to:

B4X:

Public Sub DesignerCreateView (Base As Panel, Lbl As Label, Props As Map)
   mBase = Base
   Sleep(0)
   Base.LoadLayout("MyCustomView")
End Sub

This way the second layout will be loaded after the first one completed.

RichyK68 · Jan 22, 2018

Hi Erel, thanks for the reply, which library would Sleep be in? I currently get:

B4A version: 6.31
Parsing code. Error
Error parsing program.
Error description: Undeclared variable 'sleep' is used before it was assigned any value.
Occurred on line: 23 (MyCustomView)
Sleep(0)

Richard

Erel · Jan 23, 2018

Sleep is an internal keyword added in v7.0. You can use CallSubDelayed instead and load the layout in that sub.

Android Question custom view error during release build, not debug

RichyK68

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Erel

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Android Question custom view error during release build, not debug

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