B4A Library [B4X] [XUI] B4XDialog - Custom dialogs

Discussion in 'Additional libraries, classes and official updates' started by Erel, Nov 26, 2018.

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  1. Erel

    Erel Administrator Staff Member Licensed User

    Edit: B4XDialogs is part of XUI Views library. Use that instead: [B4X] XUI Views - Cross platform views and dialogs

    B4XDialog class helps with creating cross platform custom dialogs. The dialog is made of a simple panel and it is therefore completely customizable.


    Simple usage (change Activity with MainForm.RootPane or Page1.RootPanel or any other panel you like):
    Sub ShowDialog
    Dim p As B4XView = xui.CreatePanel("")
    000300dip170dip'set the content size
    Dim rs As ResumableSub = Dialog.Show(Activity, p, "Ok""""Cancel")
    Wait For (rs) Complete (Result As Int)
    If Result = xui.DialogResponse_Positive Then
    'do something
       End If
    End Sub
    In most cases it requires a bit more work as you also want to handle keyboard changes:
    Sub ime_HeightChanged (NewHeight As Int, OldHeight As Int)
    If Dialog.Visible Then Dialog.Resize(100%x, NewHeight)
    End Sub
    Sub Page1_KeyboardStateChanged (Height As Float)
    If Dialog.Visible Then Dialog.Resize(Page1.RootPanel.Width, Page1.RootPanel.Height - Height)
    End Sub
    And in B4A you can handle the back key:
    Sub Activity_KeyPress (KeyCode As Int) As Boolean 'Return True to consume the event
       If KeyCode = KeyCodes.KEYCODE_BACK And Dialog.Visible Then
    Return True
    End If
    Return False
    End Sub
    The attached B4A example shows how to access the default buttons and change their state based on the forms fields.

    B4XDialog class is included in the example.

    - XUI / iXUI / jXUI
    - BitmapCreator v4.50+ (copy to the internal library folder if needed)
    Last edited: Jan 1, 2019
    paragkini, Levit, naifnas and 16 others like this.
  2. Erel

    Erel Administrator Staff Member Licensed User

    V1.10 released with a few changes:

    - Blurring of the background. This is an optional feature. It is enabled by default in B4A and B4J and disabled in B4i (the snapshot call is a bit slow in B4i).
    - Other small changes.


    - Don't call AutoScaleAll in the dialog layout. It will not work as expected as the layout is loaded to a smaller panel.
    - I encountered issues with FloatLabeledEditText in B4A and the keyboard handling. I recommend using regular EditTexts instead inside the dialog.
    - BitmapCreator v4.50+ is required. Link for v4.50 is available above.
    Last edited: Nov 29, 2018
    JakeBullet70 and inakigarm like this.
  3. fbritop

    fbritop Active Member Licensed User

    Do you have a running example in B4I?
  4. OliverA

    OliverA Expert Licensed User

    Did you follow the link given on the first line (the bold one) of the first post in this thread? The example in that thread (the replacement for this one) includes B4A, B4i and B4J examples.
    Erel likes this.
  5. Erel

    Erel Administrator Staff Member Licensed User

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