dropdown list is not working

[shrikant tyagi]

i used this simple code.

from kivy.uix.dropdown import DropDown
from kivy.uix.button import Button
from kivy.base import runTouchApp

# create a dropdown with 10 buttons
dropdown = DropDown()
for index in range(10):
    # When adding widgets, we need to specify the height manually
    # (disabling the size_hint_y) so the dropdown can calculate
    # the area it needs.

    btn = Button(text='Value %d' % index, size_hint_y=None, height=44)

    # for each button, attach a callback that will call the select() method
    # on the dropdown. We'll pass the text of the button as the data of the
    # selection.
    btn.bind(on_release=lambda btn: dropdown.select(btn.text))

    # then add the button inside the dropdown
    dropdown.add_widget(btn)

# create a big main button
mainbutton = Button(text='Hello', size_hint=(None, None))

# show the dropdown menu when the main button is released
# note: all the bind() calls pass the instance of the caller (here, the
# mainbutton instance) as the first argument of the callback (here,
# dropdown.open.).
mainbutton.bind(on_release=dropdown.open)

# one last thing, listen for the selection in the dropdown list and
# assign the data to the button text.
dropdown.bind(on_select=lambda instance, x: setattr(mainbutton, 'text', x))

runTouchApp(mainbutton)

but dropdown does not hide after click on list item or outside of list

always display list.

Please help.

[Elliot Garbus]

It works fine for me on Win10.  What platform are you on?

If you want a simple drop down use Spinner.

 

Here is an example using a DropDown in kv:

 

from kivy.app import App
from kivy.lang import Builder
from kivy.uix.boxlayout import BoxLayout
from kivy.properties import ListProperty

kv = """
<ThreeButtons>:
    size_hint_y: None
    height: '48dp'
    Button:
        text: root.texts[0]
        on_release: root.parent.parent.select(self.text)
    Button:
        text: root.texts[1]
        on_release: root.parent.parent.select(self.text)
    Button:
        text: root.texts[2]
        on_release: root.parent.parent.select(self.text)


BoxLayout:
    orientation: 'vertical'
    Button:
        id: btn
        text: 'Press'
        on_release: dropdown.open(self)
        on_kv_post: dropdown.dismiss()
        size_hint_y: None
        height: '48dp'

    DropDown:
        id: dropdown
        on_select: 
            btn.text = str(args[1])
            print(args)
        Button:
            text: 'First Item'
            size_hint_y: None
            height: '48dp'
            on_release: dropdown.select('First Item')
        ThreeButtons:
            texts: '1', '2', '3'
        ThreeButtons:
            texts: '4', '5', '6'
        ThreeButtons:
            texts: '7', '8', '8'
            
    Label:
        text: 'This is a DropDown Test'
"""


class ThreeButtons(BoxLayout):
    texts = ListProperty(['0', '0', '0'])


class DDApp(App):
    def build(self):
        return Builder.load_string(kv)


DDApp().run()

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[shrikant tyagi]

Hi ,

i am using window 10 but still it did not auto dismiss drop down list .

when selected outside of the widget it does not auto dismiss.

everytime display this screen.

can we not create HTML type dropdown list?

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[Elliot Garbus]

I suspect you have a problem with your installation. I recommend going to kivy.org and following the directions to install kivy 2.0.0 in a venv. 

Sent from my iPhone

On Jan 30, 2021, at 9:03 PM, shrikant tyagi <shrikan...@gmail.com> wrote:



Hi ,

i am using window 10 but still it did not auto dismiss drop down list .

<79F3F1F8F2204A4A91FDC5F79EFCE6CD.png>

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[shrikant tyagi]

i also think, may be this install issue , i agin install and run then it again give same issue. 

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[Elliot Garbus]

I suggest updating your graphics drivers: https://www.intel.com/content/www/us/en/support/intel-driver-support-assistant.html

 

 

FYI: Here is my log:

[INFO   ] [Logger      ] Record log in C:\Users\ellio\.kivy\logs\kivy_21-01-31_4.txt

[INFO   ] [deps        ] Successfully imported "kivy_deps.gstreamer" 0.3.1

[INFO   ] [deps        ] Successfully imported "kivy_deps.angle" 0.3.0

[INFO   ] [deps        ] Successfully imported "kivy_deps.glew" 0.3.0

[INFO   ] [deps        ] Successfully imported "kivy_deps.sdl2" 0.3.1

[INFO   ] [Kivy        ] v2.0.0

[INFO   ] [Kivy        ] Installed at "C:\Users\ellio\kivy_venv200\lib\site-packages\kivy\__init__.py"

[INFO   ] [Python      ] v3.9.1 (tags/v3.9.1:1e5d33e, Dec  7 2020, 17:08:21) [MSC v.1927 64 bit (AMD64)]

[INFO   ] [Python      ] Interpreter at "C:\Users\ellio\kivy_venv200\Scripts\python.exe"

[INFO   ] [Factory     ] 186 symbols loaded

[INFO   ] [Image       ] Providers: img_tex, img_dds, img_sdl2, img_pil (img_ffpyplayer ignored)

[INFO   ] [Text        ] Provider: sdl2

[INFO   ] [Window      ] Provider: sdl2

[INFO   ] [GL          ] Using the "OpenGL" graphics system

[INFO   ] [GL          ] GLEW initialization succeeded

[INFO   ] [GL          ] Backend used <glew>

[INFO   ] [GL          ] OpenGL version <b'4.6.0 - Build 27.20.100.9168'>

[INFO   ] [GL          ] OpenGL vendor <b'Intel'>

[INFO   ] [GL          ] OpenGL renderer <b'Intel(R) UHD Graphics 620'>

[INFO   ] [GL          ] OpenGL parsed version: 4, 6

[INFO   ] [GL          ] Shading version <b'4.60 - Build 27.20.100.9168'>

[INFO   ] [GL          ] Texture max size <16384>

[INFO   ] [GL          ] Texture max units <32>

[INFO   ] [Window      ] auto add sdl2 input provider

[INFO   ] [Window      ] virtual keyboard not allowed, single mode, not docked

[INFO   ] [GL          ] NPOT texture support is available

[INFO   ] [Base        ] Start application main loop

[INFO   ] [Base        ] Leaving application in progress...

 

From: shrikant tyagi
Sent: Saturday, January 30, 2021 11:09 PM
To: kivy-...@googlegroups.com
Subject: Re: [kivy-users] dropdown list is not working

 

i also think, may be this install issue , i agin install and run then it again give same issue. 

 

 

On Sun, Jan 31, 2021 at 11:07 AM Elliot Garbus <elli...@cox.net> wrote:

To view this discussion on the web visit https://groups.google.com/d/msgid/kivy-users/CAJaKc%2B3fkEVRKCwmxqRZikDs5gG%2BFiYTwMVDpt2fSfPvfRNDTA%40mail.gmail.com.

 

[shrikant tyagi]

Hi,

now i install python 3.9 and again install kivy then look at some differences.

when select list item as per old issue , list is not dismiss,

but when I maximize the window then it auto dismisses.

.

again we change and again minimize and maximise then it auto dismiss. 

Regards,

Shrikant Tyagi

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