Android Question RemoveAllViews

[LucaMs]

RemoveAllViews - It should not eliminate all the view contained, in this case, in the panel?

I have tried with various "DoEvents" after several "Invalidate", the views remain in place!

    Panel1.RemoveAllViews
    Panel1.Invalidate
    Activity.Invalidate
    DoEvents

I can use RemoveAt, i know, but...!

 

[LucaMs]

I think the problem lies in the fact that I have "drawn" with the canvas on those views. (I do not know well the canvas).

 

[LucaMs]

I tried to set canvas ("linked" to a view) to null... no effect.

 

[LucaMs]

Basically I talk to myself.

The canvas are not the problem.

The problem is an Animation that I use on a button that is not part of the panel but of the same activity.

If I remove the animation the views of the panel disappear regularly using RemoveViewAt.

 

[Erel]

You can try to reproduce it in a simple project and upload it. I will test it.

 

[LucaMs]

You can try to reproduce it in a simple project and upload it. I will test it.

 

[klaus]

What exactly doesn't work with RemoveAllViews ?

I have modified your CleanPanel routine like this:

Sub CleanPanel
    Log(Panel1.NumberOfViews)
    Panel1.RemoveAllViews
    Log(Panel1.NumberOfViews)
End Sub

With the two Logs you'll see that the number views is 12 before Panel1.RemoveAllViews and 0 after.
So RemoveAllViews works as expected.

 

[mangojack]

Klaus ... the last line of your amended CleanPanel sub .. " Panel1.NumberOfViews-1To0Step -" ... should that be there ?

 

[klaus]

You are right !
Bad copy/post and bad checking.
Amended the code.

 

[LucaMs]

What exactly doesn't work with RemoveAllViews ?

I have modified your CleanPanel routine like this:

Sub CleanPanel
    Log(Panel1.NumberOfViews)
    Panel1.RemoveAllViews
    Log(Panel1.NumberOfViews)
End Sub

With the two Logs you'll see that the number views is 12 before Panel1.RemoveAllViews and 0 after.
So RemoveAllViews works as expected.

You are right, Klaus, about the log (also using RemoveAt log is the same), but ... the images remain visible in the panel!

I tried to use Panel1.Invalidate (which, if I'm not mistaken, is the equivalent of Refresh in VB.Net) but it still does not work.

Only excluding the animation (change the comments), the result becomes well

 

[klaus]

I tested it on my Sony xperia Z1 and it works OK.
Now I tested it on my Nexus One (Android 2.3) and I see the same as you.
Replace
NewViews
by
CallSubDelayed(Me, "NewViews")
This works on my Nexus One.

 

[LucaMs]

I tested it on my Sony xperia Z1 and it works OK.
Now I tested it on my Nexus One (Android 2.3) and I see the same as you.
Replace
NewViews
by
CallSubDelayed(Me, "NewViews")
This works on my Nexus One.

Great. I have not tried but I'm sure it will work.

Many thanks, Klaus

 

[LucaMs]

In fact, it works perfectly.

Great, klaus

 

[LucaMs]

ehm...

it works perfectly in that project (it is an example) but not in my app.
I'm searching the difference, or the bug.

I hope it is not because in the example everything is done in the Main and in my app it is in a secondary activity

 

[LucaMs]

Not. Adding a second activity in the example and "transferring" all in this one, it works well.

 

[LucaMs]

What a shame

Using the tab I entered CallSub CallSubDelayed instead.

Go to sleep, Luca