Dropdown menu

[Sid]

I was trying to implement drop-down menu in a project, but i was unable to do so, can anyone help me out?

I want to implement drop-down menu and i am using builder.load_string for returning.

[Elliot Garbus]

If you are trying to do a simple drop down use the Spinner.  https://kivy.org/doc/master/api-kivy.uix.spinner.html?highlight=spinner#module-kivy.uix.spinner  The drop down is for making more customized drop down widgets.

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[Sid]

How can i add values dynamically?

[Elliot Garbus]

In kv, set the values attribute to a kv list property. 

Modifying the list will update the values. 

Let me know I’d that helps. If required I can create an example later today. 

Sent from my iPhone

On Nov 20, 2021, at 8:12 AM, Sid <saisiddh...@gmail.com> wrote:

How can i add values dynamically?

To view this discussion on the web visit https://groups.google.com/d/msgid/kivy-users/751b2da0-a7b9-4949-bbd6-e6826a09547en%40googlegroups.com.

[Sid]

An example will be great, thank you

[Elliot Garbus]

Here is an example with 2 spinners.  The top spinner, FoodSpinner, uses a kivy ListProperty to hold the values.

The bottom part of the example manipulates the values list of the spinner directly.

 

from kivy.app import App
from kivy.lang import Builder
from kivy.uix.spinner import Spinner
from kivy.properties import ListProperty

kv = """
BoxLayout:
    orientation: 'vertical'
    RelativeLayout:
        FoodSpinner:
            id: food_spinner
            size_hint: None, None
            size: 200, 48
            pos_hint: {'center_x': 0.5, 'center_y': 0.5}
            values: self.items
            text_autoupdate: True
    BoxLayout:
        size_hint_y: None
        height: 48
        Button:
            text: 'Fruits'
            on_release: food_spinner.set_fruits()
        Button:
            text: 'Vegetables'
            on_release: food_spinner.set_veg()
    RelativeLayout:
        Spinner:
            id: spinner
            size_hint: None, None
            size: 200, 48
            pos_hint: {'center_x': 0.5, 'center_y': 0.5}
            text_autoupdate: True
            values: [str(x) for x in range(1, 20, 2)]
    BoxLayout:
        size_hint_y: None
        height: 48
        Button:
            text: 'Odd'
            on_release: spinner.values = [str(x) for x in range(1, 20, 2)]
        Button:
            text: 'Even'
            on_release: spinner.values = [str(x) for x in range(0, 20, 2)]
"""


class FoodSpinner(Spinner):
    vegetables = ['Broccoli', 'String Beans', 'Peppers']
    fruits = ['Apple', 'Banana', 'Orange', 'Cherry']
    items = ListProperty(fruits)

    def set_fruits(self):
        self.items = self.fruits

    def set_veg(self):
        self.items = self.vegetables


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


DynaSpinnersApp().run()

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[Sid]

Thank you, I resolved my problem. thanks a lot