Android Question [SOLVED] Screen Orientation - Save All Views ImageView Bitmap NULL

[mmieher]

Still in the depths of the screen orientation change learning curve. Trying to save all the dynamic views in an Activity, so that I can restore them in Activity_Resume.

I am surprised that I have not been able to find a good example of handling a rotation in the forum. I have spent hours looking. I am probably making this too hard. Finally found something I like better about iOS than Android.

I am testing this on my Main layout. The layout has three ImageViews. In the code below, the ImageBiew.Bitmap is always null, even though the IV has a width and height. I can see the images on the screen before rotating the device. Here is the code:

Sub Activity_Pause (UserClosed As Boolean)
    Wait For (SaveState(Activity)) complete (Result As Int)
  
End Sub

Public Sub SaveState(inActivity As Activity) As ResumableSub
  
    For i = 0 To inActivity.NumberOfViews - 1
      
        Dim v As View = inActivity.GetView(i)
      
        Log("Type = " & GetType(v))
        Log("Tag = " & v.Tag)
      
        If v Is ImageView Then
            Log("v is ImageView")
          
            Dim iv As ImageView = v
          
            If iv.IsInitialized Then
                Dim bm As Bitmap = iv.Bitmap
                Log("bm W = " & bm.Width & " bm H = " & bm.Height)
              
                Try
                    Starter.kvs.PutBitmap("imageview",bm)
                Catch
                    Log("bitmap is null")
                End Try
              
                Log("Saved ImageView " & i)
              
            End If
        End If
      
    Next
  
    Return True
  
End Sub

Log Stuff:
** Activity (main) Pause, UserClosed = false **
Type = anywheresoftware.b4a.BALayout
Tag =
Type = android.widget.ImageView
Tag = ivCustLogo
v is ImageView
bm W = 75 bm H = 57
java.lang.NullPointerException: Attempt to invoke virtual method 'byte[] anywheresoftware.b4a.randomaccessfile.B4XSerializator.ConvertObjectToBytes(java.lang.Object)' on a null object reference
[...]
bitmap is null
Saved ImageView 1
Type = android.widget.TextView
Tag =
Type = android.widget.TextView
Tag =
Type = android.widget.ImageView
Tag = iStartCustomer
v is ImageView
bm W = 852 bm H = 480
bitmap is null
Saved ImageView 4
Type = de.amberhome.objects.internal.InternalToolbar
Tag =
Type = android.widget.TextView
Tag =
Type = android.widget.TextView
Tag =
Type = android.widget.TextView
Tag =
Type = android.widget.ImageView
Tag = ivLogo
v is ImageView
bm W = 125 bm H = 125
bitmap is null
Saved ImageView 9
Main Activity_Resume

 

[mmieher]

As usual, after spending hours on the problem, I found the answer shortly after making a post. I was not doing a kvs.initialize in Starter. Sorry for the fire drill.