Rotation

[etLux]

1.)

In a little mediaplayer app I'm doing I have a SeekBar.
In the initial layout it is set to a .Value of 50. [This
is used to control mediaplayer volume.]

During play in portrait mode, I drag it to, oh, say,
a value of 83.

When I rotate to landscape mode, the SeekBar.Value
immediately sets itself back to 50 (the initial design
setting).

I tried setting:
If UserChanged = False Then Return
in the SeekBar_ValueChanged Sub -- but that does
not do it.

I assume that this is because the layout is reloaded.
How do I get around this?

2.)

Just in general, is there a way to detect when
rotation takes place?

Thanks!


David
-----
David Sosnowski
The Music of David Sosnowski

 

[derez]

David
All views are recreated when you rotate the device, so to keep the value of the seekbar you have to store the value before the rotation takes place - by a process global variable in activity_pause sub. Then in Activity_resume you can re-allocate the value of the seekbar to the stored value.
You don't need to know when the rotation happens because the activity_pause is fired when it happens.

 

[etLux]

Thank you, David!

With a little tinkering, got it -- set up the globals,
set a few variables to values in FirstTime, then
manage it with the _Pause and _Resume. Works
fine.

Which, of course, leads me to additional questions
... lol.

Let's say I need two different layouts -- would I
not need to know that rotation occurred (and to
which orientation) in order to load the new layout
for that new orientation?

My best,



David
-----
David Sosnowski
The Music of David Sosnowski

 

[Erel]

You can create a single layout file that handles multiple layout variants. See this tutorial: http://www.b4x.com/forum/basic4andr...2-guess-my-number-visual-designer-events.html