Android Question How to BringToFront or increase elevate for imageviews or panels inside gestureDetector?

[Toni]

I'am a little bit despareted. I like to drag some panels or imageviews on a playfield. Works fine but how can I bring the active panel or imageview to front or at a higher elevation and at which location ideally in the code? Maybe my declaration of the gestureDetector is wrong, you see I'm not a very experienced user. Therefore a second question. I like these views also to rotate (by 90° steps, maybe enough but a smooth animation will be also welcome) and flip (in two different gesturedetector subs). As I read in the graphics booklet an imageview offers naturaly both methods. On the other hand it should be no problem to get the bitmap of a panel. So what do you suggest I should prefer for my belongings, panels or imageviews? Excuse my bad english and please answer in relative short sentences, thank you! German answers are also welcome! the shortened but full working code is also attached as zip.

EdiT: the views are located on another panel. Don't know if this is important.

    Dim GD0 As GestureDetector
    Dim GD1 As GestureDetector
    Dim GD2 As GestureDetector
    Dim GD3 As GestureDetector
    Dim GD(4) As GestureDetector
   
    ...
   
    GD=Array As GestureDetector(GD0, GD1, GD2, GD3)
   
    piece=Array As Panel(pcs0, pcs1, pcs2, pcs3)  
   
    Dim i As Int
   
    For i= 0 To 3
        GD(i).SetOnGestureListener(piece(i), "Gesture")
    Next  
    ....
   
    Sub Gesture_onDrag(deltaX As Float, deltaY As Float, MotionEvent As Object)
   
    Dim i As Panel=Sender
    Dim j As Int
    j=i.Tag
    Log("no "  & "  " & j)
    'piece(j).Elevation=5dip        'no crash , but also no reaction  
    'piece(i).bringtofront crashes as well as piece(j).bringtofront
    i.left = Max(9dip, Min(i.Left + deltaX, bg.width -i.Width-9dip))
    i.top = Max(9dip, Min(i.Top + deltaY, bg.height-i.height))
    If DipToPixels(i.top)   < 340 Then
        i.SetLayoutAnimated(0,i.left, i.top, states.Get("width" & j), states.Get("height" & j))
    Else
        i.SetLayoutAnimated(0,i.left, i.top, states.Get("width" & j)*0.6, states.Get("height" & j)*0.6)
    End If
End Sub

 

[klaus]

Change your Gesture_onTouch routine to this:

Sub Gesture_onTouch(Action As Int, X As Float, Y As Float, MotionEvent As Object) As Boolean
    Dim i As Panel = Sender
    Dim j As Int
    j = i.Tag

    Log("onTouch action=" & Action & ", x=" & X & ", y=" & Y & ", ev=" & MotionEvent)

    Select Action
        Case GD(j).ACTION_DOWN
            i.BringToFront
        Case GD(j).ACTION_MOVE
        Case GD(j).ACTION_UP
    End Select
    Return True
End Sub

Or like this:

Sub Gesture_onTouch(Action As Int, X As Float, Y As Float, MotionEvent As Object) As Boolean
    Dim i As Panel = Sender
    Dim j As Int
    j = i.Tag

    Log("onTouch action=" & Action & ", x=" & X & ", y=" & Y & ", ev=" & MotionEvent)
    
    If Action = GD(j).ACTION_DOWN Then
        i.BringToFront
    End If
    Return True
End Sub

 

[Toni]

Hi Klaus, thanx! I 'll try it and report!

 

[Toni]

One question again: what do you think is better for my belongings, using a panel or a an imageview or doesn't matter?
Best regards

 

[klaus]

I would stay with Panels.
But i think that it does not matter.

 

[Toni]

Thanks again for your advice!