iOS Question I need swipe event

[giagia]

I need to capture event ( swipe, long Press). In b4a I used gesturedetector. how can I do in B4i?

 

[Star-Dust]

On what view do you have to intercept these events?

If it were a panel it would be like this

Public Sub Panel_LongClick
   
End Sub

Public Sub Panel_Touch(Action As Int, X As Float, Y As Float)
    Select Action
        Case 0 ' down
           
        Case 1 ' Up
           
        Case 2 ' move / drag
           
    End Select
End Sub

Then it depends exactly what you need to achieve

 

[giagia]

the view is ScrollView, on it I have line of label

 

[Star-Dust]

the view is ScrollView, on it I have line of label

The ScrollView already handles and consumes these events. Why do you need to intercept them?

 

[giagia]

The ScrollView already handles and consumes these events. Why do you need to intercept them?

When a user drag on a element of scrollview(right to left) I need to run a method.

 

[Star-Dust]

When a user drag on a element of scrollview(right to left) I need to run a method.

When you scroll the ScrollView, this event raises

Public Sub ScrollView_ScrollChanged (OffsetX As Int, OffsetY As Int)
   
End Sub

 

[Semen Matusovskiy]

As I understand, a scrollview holds some child elements (for example, ImageView) and user can drag them.
The easiest solution is to add a panel, which will be a child of RootPanel with maximum z-order index (BringToFront) .

 

[giagia]

As I understand, a scrollview holds some child elements (for example, ImageView) and user can drag them.
The easiest solution is to add a panel, which will be a child of RootPanel with maximum z-order index (BringToFront) .

my panel need to Scrolldown, I put the scrollview into panel but now I can't capture panel_Touch.

 

[giagia]

When you scroll the ScrollView, this event raises

Public Sub ScrollView_ScrollChanged (OffsetX As Int, OffsetY As Int)
  
End Sub

This solution it's ok but OffsetX is always to 0. why? I need to capture horizontal movement ( right to left, and left to right)

 

[giagia]

i found the solution. I have add Scroolview and capture the movement event with:

 Sub myScrollview_Touch(Action As Int, X As Float, Y As Float)
    Select Action
        Case 0 ' down
       
        Case 1 ' Up
      
        Case 2 ' move / drag
          
            
    End Select
End Sub

 

[Semen Matusovskiy]

Probably, there is a reason to use native gesture recognizer. Not so simple, but not very difficult also.
I made a sample. An app detects swipe left/right and hides corresponding view.

 

[Erel]

Check CLVSwipe: https://www.b4x.com/android/forum/t...pe-actions-and-pull-to-refresh.98252/#content