iOS Question [Solved] Draggable view inside another

[angel_]

I'm using this example:

Is there any library to drag views ?

I want to create some puzzles in my apps

www.b4x.com

Is it posible to have a draggable button inside a draggable panel?

I'm trying with this code but it doesn't work:

Private Sub Application_Start (Nav As NavigationController)
    NavControl = Nav
    Page1.Initialize("Page1")
    Page1.Title = "Page 1"
    Page1.RootPanel.Color = Colors.White
    NavControl.ShowPage(Page1)
    
    pnl.Initialize("")
    Page1.RootPanel.AddView(pnl, 0, 0, 300, 300)
    pnl.Color = Colors.Yellow
    
    Dim dv1 As DraggableView
    dv1.Initialize(Page1.RootPanel, pnl)
    
    button1.Initialize("", button1.STYLE_SYSTEM)
    pnl.AddView(button1, 0, 0, 100, 100)
    button1.Color = Colors.ARGB(100, 0, 100, 0)
    
    Dim dv2 As DraggableView
    dv2.Initialize(pnl, button1)
End Sub

 

[Semen Matusovskiy]

Possible. In attached sample you can drag a panel and it's childs.
The way, which I used, works for UIControl only. Meanwhile not all visual components support this interface. For example, B4i Panel and Label (unlike Button) do not support.

 

[angel_]

It works really well, but I can't implement it. I want to put the code inside a class but I get this error

no visible @interface for 'b4i_MyClass' declares the selector '_viewtouch::::'

I did something like this

Public Sub Initialize (Callback As Object, EventName As String)    
'...
innerView.Initialize("")
B4XPages.MainPage.pnlMain.AddView(innerView, xBase.Left, xBase.Top, xBase.Width, xBase.Height)

Dim noMe As NativeObject = B4XPages.GetNativeParent(B4XPages.MainPage)
noMe.RunMethod ("addDragEvents:", Array (innerView))
End Sub

Public Sub ViewTouch (action As Int, v As View, x As Float, y As Float)
'the same
End Sub

#IF OBJC
'the same 
#End If

 

[Semen Matusovskiy]

I don't understand, for which purpose you need a class.

Probably there is a reason to create CustomView such as DragableButton, DragablePanel etc., which will support all features of Button/Panel and additional property, for example, dragEnabled = True / False. It's enough simple, but a code will be relatively large, because it's nessesary to duplicate methods and events.

 

[angel_]

I don't understand, for which purpose you need a class.

Probably there is a reason to create CustomView such as DragableButton, DragablePanel etc., which will support all features of Button/Panel and additional property, for example, dragEnabled = True / False. It's enough simple, but a code will be relatively large, because it's nessesary to duplicate methods and events.

I have a main panel with several customviews inside this custom view I have panels, imageview and label, I want to move main panel with all customviews and also I want to move each customview independently

 

[angel_]

It was easier than I thought, without your example it would not have been possible, thank you

 

[Semen Matusovskiy]

To use transparent panel over real view is a good idea in some situations. But you will not receive Buton1_Click etc.

 

[angel_]

To use transparent panel over real view is a good idea in some situations. But you will not receive Buton1_Click etc.

I'm having trouble displaying a page with SwiftButton, does not responde, if I use native button it works

Is it related to this?

Remove touch listener and cancel action

While building the Pleroma client (https://www.b4x.com/android/forum/threads/b4x-b4xpages-pleroma-mastodon-client-step-1.119426/), I've encountered several cases where the touch events had some unwanted behavior. The reason for this, is that there are multiple stacked views that listen for the...

www.b4x.com

Maybe I should open a new thread

 

[Semen Matusovskiy]

Theoretically custom views could be a problem. But I don't see any problem with SwiftButton. Try attached sample. You can see events in the log.

 

[angel_]

Thank you, you're right, there was no problem with the code .

The problem is what Eres said in this thread:

Remove touch listener and cancel action

While building the Pleroma client (https://www.b4x.com/android/forum/threads/b4x-b4xpages-pleroma-mastodon-client-step-1.119426/), I've encountered several cases where the touch events had some unwanted behavior. The reason for this, is that there are multiple stacked views that listen for the...

www.b4x.com

I was loading the layout with buttons inside a customlistview, and was missing the event click. I attach the solution that Erel said.