Android Question RemoveAllViews

LucaMs · Dec 14, 2013

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!

B4X:

    Panel1.RemoveAllViews
    Panel1.Invalidate
    Activity.Invalidate
    DoEvents

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

LucaMs · Dec 14, 2013

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 · Dec 14, 2013

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

LucaMs · Dec 14, 2013

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 · Dec 15, 2013

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

LucaMs · Dec 15, 2013

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

klaus · Dec 15, 2013

What exactly doesn't work with RemoveAllViews ?

I have modified your CleanPanel routine like this:

B4X:

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 · Dec 15, 2013

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

klaus · Dec 15, 2013

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

LucaMs · Dec 15, 2013

klaus said:
What exactly doesn't work with RemoveAllViews ?

I have modified your CleanPanel routine like this:

B4X:

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 · Dec 15, 2013

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 · Dec 15, 2013

klaus said:
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 · Dec 15, 2013

In fact, it works perfectly.

Great, klaus

LucaMs · Dec 15, 2013

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 · Dec 15, 2013

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

LucaMs · Dec 15, 2013

What a shame

Using the tab I entered CallSub CallSubDelayed instead.

Go to sleep, Luca

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