Android Question Persist Webview through Orientation Change

Erel said:

Not without doing quite a lot of work. It will be simpler to use StateManager for most views.

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Erel said:

StateManager doesn't do anything with WebView.

Example of saving WebView state when the orientation changes:

B4X:

Sub Process_Globals
   Private Bundle As JavaObject
End Sub

Sub Globals
   Private WebView1 As WebView
End Sub

Sub Activity_Create(FirstTime As Boolean)
   Activity.LoadLayout("1")
  
   If Bundle.IsInitialized Then
       Dim jo As JavaObject = WebView1
       jo.RunMethod("restoreState", Array(Bundle))
   Else
       WebView1.LoadUrl("https://www.b4x.com")
   End If
End Sub

Sub Activity_Resume

End Sub

Sub Activity_Pause (UserClosed As Boolean)
   Bundle.InitializeNewInstance("android.os.Bundle", Null)
   Dim jo As JavaObject = WebView1
   jo.RunMethod("saveState", Array(Bundle))
End Sub


Sub btnBack_Click
   WebView1.Back
End Sub

Sub btnForward_Click
   WebView1.Forward
End Sub

Click to expand...

'Pseudocode

Private WebView1 As WebView
Private WebView2 As WebView

WebView1.LoadURL("http://www.website1.com")
WebView2.LoadURL("http://www.website2.com")

Erel said:

You can use two bundles or save the two WebViews in the same bundle (I haven't tested it).

Click to expand...

Dim jo As JavaObject = webview1
jo.RunMethod("saveState", Array(Bundle1))

DawningTruth said:

Ok, tested it and it works with 2 different bundles.

Now I'm getting a weird error. Let me explain:

I load the Views - works
Rotate the phone - works
Rotate back - crashes

What is weird is the error. It is like it has lost the bundle or something.

Here are the logs:

Here is the code for lines 69 and 70.

B4X:

Dim jo As JavaObject = webview1
jo.RunMethod("saveState", Array(Bundle1))

Click to expand...