Catch screen rotation BEFORE it happens?

[MotoMusher]

I am running a camera in a panel. If the camera is destroyed without releasing, the camera is locked out until a reboot.

Rotating orientation, causes my panel to disappear, which I am fine with, but camera gets locked.

Is there an event that fires before the rotation? I was hoping for Activity_pause, but that doesn't fire. I can tell if orientation changed, but it is too late then and the camera is toast.

I saw a post about how to do it in a service with a timer, but that doesn't seem real efficient battery wise putting the app in a perpetual loop, and it also detects after the rotation, not before.

thanks.

 

[grant1842]

When an activity is rotated it is paused and then resumed. You can handle releasing the camera on the pause event and re-initializing it on resume.

 

[Erel]

See the CameraEx class and example.

 

[daemon]

Is there any way to prevent pause/resume cycle but handle the rotation internally like camera app?

 

[NJDude]

You cannot prevent the pause/resume, that's how Android works, but, you can lock your app on a specific orientation like portrait or landscape.

 

[daemon]

It is possible to do so by editing manifest file.
https://developer.android.com/guide/topics/resources/runtime-changes.html#HandlingTheChange

Question is if it is possible to get onConfigurationChanged event in activity? and if so, how to manage changes in layout?

 

[Erel]

It is not simple and in most cases not recommended. You can use the code posted here: https://www.b4x.com/android/forum/t...through-orientation-change.37511/#post-222072