Android Question CameraExClass and orientation

[heldenssjoerd]

I've a similar issue like this post however I can't figure it out.

CameraExClass Saved Image orientation different then Preview image

Hi guys, I have a problem with image orientation taking with CameraEx Class. Here are the problems : 1) on camera preview, image orientation is portrait 2) when picture taken and save to file with these codes Sub Camera_PictureTaken (Data() As Byte) Private filename As String = "1.jpg"...

www.b4x.com

Our app is completly portrait. However a user can take a picture in every modus, it's a phone so landscape or portrait are options.

Using the code below results in allways an portrait preview and imagefile. Even if the picture is taken landscape.

camEx.SavePictureToFile(DataFoto, File.DirInternal, psFotoFilename)

    oImageView.Gravity = Gravity.FILL
    oImageView.Bitmap =  camEx.LoadbitmapSample2(File.DirInternal,psFotoFilename,oImageView.Width,oImageView.Height,True)

When checking the exif data from the picture, the result i allways 90. Wheter we're holding the phone landscape or portrait

Dim retValue As Int = 0
    Dim filepath As String
    Dim exif As ExifData
   

    filepath = dir & "/" & Filename
         
    exif.Initialize("", filepath)
         
    ' // Get orientation
    Dim w As Int = exif.getAttributeInt (exif.TAG_ORIENTATION, 0)
   
    If w = exif.ORIENTATION_NORMAL Then retValue = 0
    If w = exif.ORIENTATION_ROTATE_90  Then retValue = 90
    If w = exif.ORIENTATION_ROTATE_180  Then retValue = 180
    If w = exif.ORIENTATION_ROTATE_270  Then retValue = 270
   Log(retValue)
    Return retValue

Really need some help with this. Does the portrait mode has something to do with it?

 

[Erel]

Our app is completly portrait. However a user can take a picture in every modus, it's a phone so landscape or portrait are options.

The app is locked in portrait mode and the user takes the picture in landscape mode?

 

[heldenssjoerd]

The app is locked in portrait mode and the user takes the picture in landscape mode?

Correct. The app is portrait. But the user can ofcourse flip the phone and take a picture.

 

[Erel]

I think that your best (most reliable) option is to let the user rotate the image. It should be simple to implement with B4XBitmap.Rotate

 

[heldenssjoerd]

Is there no other possibility? Like setting just this view to not portrait?
The app is not build with/for b4xpages

 

[DonManfred]

Like setting just this view to not portrait?

no such thing available

 

[heldenssjoerd]

I think I've found a workaround.
In Main we set the

#SupportedOrientations: unspecified 'used to be portrait

In every view/activity that should not rotate we set, in the create, the following

    Dim phone As Phone
    phone.SetScreenOrientation(1)

Then there is no rotation possible.
All other activities and views need to be checked and tested.

 

[Surreal]

Good morning
Why if phone.SetScreenOrientation(0) the preview image is distorted?
Is there a way to prevent this from happening?

Thanks