iOS Question Detect orientation

Nickelgrass · Nov 7, 2023

Hello,
I am making an app that can run in landscape and portrait mode and may be rotated during runtime. In my code I am setting imageviews bitmaps with LoadBitmap corresponding to statuses. According to the orientation, this image must load a rotated image or not. But how can I now distinguish the orientation?

Code:

            If i = types.STATE_CONNECTED Then
                panta_logo.Bitmap = LoadBitmap(File.DirAssets, "logo_green.png")
            else If i = types.STATE_ERROR Then
                panta_logo.Bitmap = LoadBitmap(File.DirAssets, "logo_red.png")
            Else
                panta_logo.Bitmap = LoadBitmap(File.DirAssets, "logo_yellow.png")
            End If

Thanks

edit: figured it out. it is pg.RootPanel.Width and height. But is there any event risen when orientation changes?

edit: figured it out. Its the Sub pg_Resize(Width As Int, Height As Int) event that does not appear when I enter the tab page menu. Is it supposed to not show up?

Erel · Nov 9, 2023

Tip: switch to B4XPages and handle the B4XPage_Resize event.

I'm not sure what you mean with the last question. Better to start a new thread.

Alexander Stolte · Nov 9, 2023

Nickelgrass said:
But how can I now distinguish the orientation?

B4X:

If Height > Width Then
    Log("portrait")
Else
    Log("landscape")
End If

b4x-de · Oct 25, 2025

B4X:

' Returns 1 = Portrait, 2 = PortraitUpsideDown, 3 = LandscapeLeft, 4 = LandscapeRight or -1 = Error
Private Sub getOrientation() As Int
   
    Dim no As NativeObject

    Try
        no = no.Initialize("UIDevice").RunMethod("currentDevice", Null)
        Dim orientation As Int = no.RunMethod("orientation", Null).AsNumber
        Return orientation
    Catch
        Log("Failed to get Device Orientation from UIDevice.currentDevice().")
    End Try
   
    Return -1
End Sub

Public Sub isLandscape() As Boolean
    Dim intOrientation As Int

    ' 1 = Portrait, 2 = PortraitUpsideDown, 3 = LandscapeLeft, 4 = LandscapeRight, -1 = Error
    intOrientation = getOrientation
   
    Return intOrientation = 3 Or intOrientation = 4
End Sub

Public Sub isPortrait() As Boolean
    Dim orientation As Int

    ' 1 = Portrait, 2 = PortraitUpsideDown, 3 = LandscapeLeft, 4 = LandscapeRight, -1 = Error
    ' Return true in case of error
    orientation = getOrientation
    Return orientation = 1 Or orientation = 2 Or orientation = -1
End Sub

iOS Question Detect orientation

Nickelgrass

Active Member

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Erel

B4X founder

Alexander Stolte

Expert

b4x-de

Active Member

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iOS Question Detect orientation

Nickelgrass

Active Member

Attachments

Erel

B4X founder

Alexander Stolte

Expert

b4x-de

Active Member

Similar Threads

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