iOS Question Sanity check: Isn't ".SetVisibleAnimated(0, True)" and ".Visible = True" the same?

Sandman · Dec 29, 2023

Shouldn't these two in effect do the same thing?

B4X:

myPanel.SetVisibleAnimated(0, True)
    
myPanel.Visible = True

I have a situation where I used the bottom one, because that worked fine in B4A and B4J. However, in B4i I need to use the top one to make the panel visible.

(If it matters, the panel is initially visible and then faded to not visible using .SetVisibleAnimated(3000, False).)

Erel · Dec 31, 2023

While the implementation is different SetVisibleAnimated(0, True) should work. Can you reproduce it in a small project?

Sandman · Jun 17, 2024

I had to focus on other things for some time and forgot about this. Now I came back to this part of my code and re-discovered the problem.

I managed to make a very small project that does show the problem. There are two things to test:

- Press the button when the red box IS NOT showing - everything continues to work as expected.
- Press the button when the red box IS showing - the box is gone forever.

To summarize, this seems to be the problem: Iff a view is visible and is touched by SetVisibleAnimated, then it can't get back its visibility using Visible.

(I checked in B4A and there this all works as expected.)

Erel · Jun 17, 2024

There is indeed a bug here. It will be fixed for the next update.

Workaround is to explicitly set the alpha to 1:

B4X:

Private Sub blinktimer_Tick
    Panel1.Visible = Not(Panel1.Visible)
    Panel1.Alpha = 1
End Sub

iOS Question Sanity check: Isn't ".SetVisibleAnimated(0, True)" and ".Visible = True" the same?

Sandman

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Erel

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Sandman

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Erel

B4X founder

iOS Question Sanity check: Isn't ".SetVisibleAnimated(0, True)" and ".Visible = True" the same?

Sandman

Expert

Erel

B4X founder

Sandman

Expert

Attachments

Erel

B4X founder

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