Drag & Drop a view

[anth12]

:sign0104:

Hi. Im new to B4A, downloaded the trial last week and liked it a lot (bought it the next day)...

Is there any way of dragging & dropping a view e.g. the user presses and holds button1 then slides their finger right the button moves with the finger.

How would i go about recording the cursor position, i know that a touch is a click... however if the finger is held down is there a way of getting the position the finger is held at. or anything similar?

Any help would be greatly appreciated. Thanks, Anthony.

 

[Jim Brown]

Hello anth12

Without testing I don't think there is a way to get the 'touch' point from a GUI element

The way I get around this in my mobile layout designer is to have a transparent panel over the top of the GUI elements. When I touch the display I have call a function to find the view under the X,Y point. Then its a matter of tracking the movement

Example -> Designer example (YouTube video)

The Panel touch sub functions like this:

Sub Panel_Touch (Action As Int, X As Float, Y As Float)
   Select Action
      Case Activity.ACTION_DOWN ' user just touched the panel
      Case Activity.ACTION_MOVE ' user moving finger in panel
      Case Activity.ACTION_UP ' user released finger off panel
   End Select
End Sub

 

[anth12]

Very usefull code.

Thank you.

 

[javiers]

I can not see the video...

Hello, I can not see the video. Could you turn it on or give an example of the code?

Thank you.

 

[herryj]

I wasn't able to preview the video

 

[xpectmore]

there is a MISERABLE way to get the 'touch' point from a GUI element..
will work fine if you touch first the background(i used some code from examples LISTED here)

 

[udg]

Hi, have a look at Erel's DraggableView class.

udg

 

[xpectmore]

if you read up you can see : "a way to get the 'touch' point from a GUI element.."
thanks for that,i can use that too...

and here the same "way to get the 'touch' point from a GUI element.." using a invisible panel :

 

[Erel]

This is a thread from 2011. For further discussions please start a new one.