Android Question [SOLVED] Call button_click using x and y coordinates

Star-Dust said:

With Accessibility Service you can click on a precise coordinate.

Click to expand...

William Lancee said:

At first glance this may seem simple, but the left, top positions of views are relative to their parents.
If all buttons have activity as parent then identifying the button is easy. If the layout has buttons inside panels, it is more difficult.
The code below will identify a button from its properties, if all buttons have activity as parent.

Once the button is identified, you have another challenge. How to know what event-handler to call?
You can put the event name in the tag property in designer.
When button is identified, you can retrieve that string and then use CallSub(Me, evName & "_Click)

The code below is for B4XPages, where Root is like Activity in standard templates.

B4X:

Private Sub PressButton(X As Float, Y As Float)
    For i = 0 To Root.NumberOfViews - 1
        Dim thisView As B4XView = Root.GetView(i)
        If thisView Is Button Then
            If thisView.Left <= X And (thisView.Left + thisView.Width) >= X Then
                If thisView.Top <= Y And (thisView.Top + thisView.Height) >= Y Then
                    CallSub(Me, thisView.Tag.As(String) & "_Click")
                End If
            End If
        End If
    Next
End Sub

Click to expand...

scsjc said:

thanks for your quick response It sure is a good option.

But I wanted to do something very simple, simply read the buttons on the screen (in a loop) and knowing their coordinates return which button is pressed.

Click to expand...

William Lancee said:

At first glance this may seem simple, but the left, top positions of views are relative to their parents.
If all buttons have activity as parent then identifying the button is easy. If the layout has buttons inside panels, it is more difficult.
The code below will identify a button from its properties, if all buttons have activity as parent.

Once the button is identified, you have another challenge. How to know what event-handler to call?
You can put the event name in the tag property in designer.
When button is identified, you can retrieve that string and then use CallSub(Me, evName & "_Click)

The code below is for B4XPages, where Root is like Activity in standard templates.

B4X:

Private Sub PressButton(X As Float, Y As Float)
    For i = 0 To Root.NumberOfViews - 1
        Dim thisView As B4XView = Root.GetView(i)
        If thisView Is Button Then
            If thisView.Left <= X And (thisView.Left + thisView.Width) >= X Then
                If thisView.Top <= Y And (thisView.Top + thisView.Height) >= Y Then
                    CallSub(Me, thisView.Tag.As(String) & "_Click")
                End If
            End If
        End If
    Next
End Sub

Click to expand...

Private Sub PressButton(paneltouch As Panel, X As Float, Y As Float) As Boolean
    x = x - paneltouch.Left
    y = y - paneltouch.top
    For i = 0 To paneltouch.NumberOfViews - 1
        Dim thisView As B4XView = paneltouch.GetView(i)
        If thisView Is Button Then
            If thisView.Left <= X And (thisView.Left + thisView.Width) >= X Then
                If thisView.Top <= Y And (thisView.Top + thisView.Height) >= Y Then
                    CallSub(Me, thisView.Tag.As(String) & "_Click")
                    Return True
                End If
            End If
        End If
    Next
    Return False
End Sub