Customlistview Longclick?

[m643]

Hi,

I'm using the customlistview. Is there also the possibility to use the Longclick and show a menu? I can't this in the documentation.

Michael

 

[Erel]

You will need to modify CustomListView code. See the Panel_Click sub. You will need to implement a similar sub for Panel_LongClick.

 

[imgsimonebiliato]

Hello @m643 ,
have you solved this thread? Can you please post your code?

 

[mangojack]

In the CustomListView class duplicate the Panel_Click Sub .. and change event name & parameter strings.

Private Sub Panel_LongClick
 
   If SubExists(CallBack, EventName & "_LongClick") Then       
     Dim v As View
     v = Sender
     CallSub3(CallBack, EventName & "_LongClick", v.Tag, items.Get(v.Tag))
   End If
 
End Sub

Then in your Main module ..

Sub clv1_LongClick (Index As Int,Value As Object)

 

[Shay]

Hi
I did the above, and once I press long click I am getting:


java.lang.Exception: Sub clv3_longclick signature does not match expected signature.


at anywheresoftware.b4a.BA.raiseEvent2(BA.java:177)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:163)
at anywheresoftware.b4a.BA.raiseEvent(BA.java:159)
at anywheresoftware.b4a.objects.ViewWrapper$2.onLongClick(ViewWrapper.java:87)
at android.view.View.performLongClick(View.java:4268)
at android.widget.TextView.performLongClick(TextView.java:8309)
at android.view.View$CheckForLongPress.run(View.java:17277)
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:4921)
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:1027)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:794)


at dalvik.system.NativeStart.main(Native Method)
java.lang.Exception: Sub clv3_longclick signature does not match expected signature.

 

[DonManfred]

clv3_longclick signature does not match expected signature.

what IS the signature of your sub? Help us (giving more informations (code)) to help you

 

[Shay]

You mean this?

Sub clv3_LongClick (Index As Int,Value As Object)
Log("OK")
End Sub

 

[mangojack]

Shay .. just to be sure , can you post the class Panel_Longclick sub.

 

[Shay]

Did Copy & Paste from the above

Private Sub Panel_LongClick
   If SubExists(CallBack, EventName & "_LongClick") Then      
     Dim v As View
     v = Sender
     CallSub3(CallBack, EventName & "_LongClick", v.Tag, items.Get(v.Tag))
   End If
End Sub

But now - this is strange: I put the same code on "CustomListView" example project and it is working fine
How can it be?

 

[Shay]

I found some clue, if I do this, it will not crash:

Sub clv3_LongClick
Log("OK")
End Sub

so what can it be?

 

[Erel]

Don't confuse the panel LongClick event that you add inside CustomListView class (with no parameters) to the one that is outside the class with the two parameters.

 

[Shay]

This is in the class: (as written in the example above)

Private Sub Panel_LongClick
   If SubExists(CallBack, EventName & "_LongClick") Then      
     Dim v As View
     v = Sender
     CallSub3(CallBack, EventName & "_LongClick", v.Tag, items.Get(v.Tag))
   End If
End Sub

and this is in my activity:

Sub clv3_LongClick (Index As Int,Value As Object)
Log("OK")
End Sub

And as I said if I change it (in my activity) to:

Sub clv3_LongClick
Log("OK")
End Sub

it is not crashing, so how do I fix it?

Thanks

 

[mangojack]

Shay .. your code looks OK and it should work.. ?
picking at straws ... does your module contain a normal click sub ... and it works as expected ?

clv3_ItemClick (Index As Int, Value As Object)

 

[Shay]

Ok, I found the issue
I had label which is init as: Label1.Initialize("clv3")
(I did this since I used other listView and I wanted to have same trigger as clv3)
so once I changed the name of the above label, now it is ok

strange thing that ItemClick had no issue, only the LongClick