Device Orientation

[Rusty]

Is there a way to detect when the user rotates the (Android) device from landscape to portrait and back. I would like to change the size of objects based upon the x/y dimensions of the device and not necessarily keep them the same and in the process change the number of rows/columns of buttons, for example.
Further, when the device is rotated, I understand that the activity is destroyed and a new one created. You implied there was an easy way to retain values from the previous activity so the user doesn't have to start over again. What method is this?

 

[alfcen]

Hi Rusty,

This is fine reading:
http://www.b4x.com/forum/basic4andr...2-guess-my-number-visual-designer-events.html

You may as well wish to save view coordinates under Activity_Pause and read them back under Activity_Resume as explained here:
http://www.b4x.com/forum/basic4andr...urrency-converter-http-web-services-more.html

Activity.Height/Activity.Width or the keyword GetDeviceLayout placed under Activity_Create help find current orientation.

 

[Erel]

And another simple option is to just disable orientation changes by checking Project - Orientation Supported.

 

[Rusty]

Thanks to both Erel and AlfCen.
I followed AlfCen's advice and declared my data variables within the Process globals. Then with the edittext field changed event stored them there. When the activity resumes, i reload the edittext from the stored values.
Works like a charm!

 

[NeoTechni]

can you temporarily disable an orientation change, and re-enable it later?

 

[Erel]

Yes. With Phone.SetScreenOrientation.