Android Question Change in Oreo

[MAGAREY]

hi everyone!
I have a project in which I use the following code to detect when you have the focus or not on a button. but in android oreo never triggers the routine, is there any change in this version?

Sub SetUpOnFocusListener(Button As Button, EventName As String)
    FocusButton(Button) 'This will let us focus the button.
    Dim JO As JavaObject = Button
    Dim event As Object = JO.CreateEvent("android.view.View.OnFocusChangeListener",EventName,False)
    JO.RunMethod("setOnFocusChangeListener",Array As Object(event))
End Sub

 

[Erel]

What are you using it for? Are you using a connected keyboard?

When you call Button.RequestFocus it returns a boolean value. It should be true if the focus was set. Check whether you can actually set the focus.

 

[MAGAREY]

What are you using it for? Are you using a connected keyboard?

yes, im using a connected keyboard ,the problem is when I'm navigating with the arrows, the routine that was created with the SetUpOnFocusListener does not trigger and does not create the white frame on the button that is in focus

 

[MAGAREY]

this only happens in oreo

 

[Erel]

does not create the white frame on the button that is in focus

Sounds like the focus hasn't changed. Have you checked the output of Button.RequestFocus?

Maybe you need to make it focusable: https://www.b4x.com/android/forum/threads/keyboar-navigation.81566/#post-517053

 

[MAGAREY]

i do make foucusable i use this code

Sub FocusButton(Button As Button)
    Dim JO As JavaObject = Button
    JO.RunMethod("setFocusable",Array As Object(True))
    JO.RunMethod("setFocusableInTouchMode",Array As Object(True))
    Button.RequestFocus
End Sub

the focus

Sounds like the focus hasn't changed.

apparently the focus change is done because it allows me to click on the following buttons (without creating the white frame) but it does not trigger the setOnFocusChangeListener that was created,

 

[Erel]

It is probably not related but it is better to use JavaObject.CreateEventFromUI. Otherwise you will encounter issues in debug mode.

Does it work with an EditText?

 

[MAGAREY]

Could you check this example? try changing what you suggested but the problem continues.

 

[Erel]

I'm sorry but please try to reproduce it in a small project with only the relevant feature.

 

[MAGAREY]

sorry, here is the example, without the irrelevant code

 

[Erel]

This code works properly on Android 9:

Sub Activity_Create(FirstTime As Boolean)
   Dim et1, et2 As EditText
   et1.Initialize("")
   et2.Initialize("")
   Activity.AddView(et1, 0, 0, 100dip, 50dip)
   Activity.AddView(et2, 0, 100dip, 100dip, 50dip)
   SetUpOnFocusListener2(et1, "et1")
   SetUpOnFocusListener2(et2, "et2")
End Sub

Sub SetUpOnFocusListener2(v As View, EventName As String)
   Dim JO As JavaObject = v
   JO.RunMethod("setFocusable",Array As Object(True))
   Dim event As Object = JO.CreateEventFromUI("android.view.View.OnFocusChangeListener",EventName,False)
   JO.RunMethod("setOnFocusChangeListener",Array As Object(event))
End Sub

Sub et1_Event (MethodName As String, Args() As Object) As Object
   Log(MethodName)
   Return Null
End Sub

Sub et2_Event (MethodName As String, Args() As Object) As Object
   Log(MethodName)
   Return Null
End Sub

I guess that the problem you encounter is not related to the listener but rather to the focus behavior itself.