CODEWITHSUNDEEP
pythonkivy
Tommy do Nascimiento
Tommy do Nascimiento

Reputation: 157

Showing a list in kivy

I have a problem showing a list in kivy. I don't know how why don't show this two entries. I think is something about how i pass my data, do I have to specify the columns or how to display the information. Am I passing wrong the data needed in recycleView?

My code.

My interchange.kv

<Button>
    color: .8,.9,0,1
    font_size: 16

<LeLayaout>:
    rows: 3
    cols: 1
    FloatLayout:
        size_hint: 1,.05
        Button:
            text: 'Generate'
            pos_hint: {'center_x':.5,"center_y":.5}
    BoxLayout:
        RecycleBoxLayout:
            default_size: None, dp(56)
            default_size_hint: 1, None
            size_hint_y: None
            height: self.minimum_height
            orientation: 'vertical'
    FloatLayout:
        size_hint: 1,.05
        Button:
            text: 'Add person'
            pos_hint: {'x':0,'y':0}
            size_hint:.5,1
        Button:
            text: 'Remove person'
            pos_hint: {'x':.5,'y':0}
            size_hint:.5,1

My main.py

from kivy.app import App
from kivy.uix.gridlayout import GridLayout
from kivy.uix.floatlayout import FloatLayout
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.recycleview import RecycleView

# Before windows creation let's fix a size
from kivy.config import Config
Config.set('graphics', 'width', '400')
Config.set('graphics', 'height', '600')

import json

class RV(RecycleView):
    def __init__(self, **kwargs):
        super(RV, self).__init__(**kwargs)
        self.data = {"Hector": "[email protected]","Pancho": "[email protected]"}

class LeLayaout(GridLayout):
    pass

class InterchangeApp(App):
    def build(self):
        return LeLayaout()

if __name__ == '__main__':
    InterchangeApp().run()

Upvotes: 0

Views: 151

Answers (1)

John Anderson
John Anderson

Reputation: 39082

Several problems with your code:

  • You define an RV class, but you never use it
  • The data that you define in the __init__() method of the RV class is a dictionary, but the data is expected to be a list of dictionaries. See documentation.
  • The keys of the data dictionaries must be properties of the viewclass, but your keys are peoples names.
  • You have not specified a viewclass for the RV.

To fix this change the BoxLayout in your kv to RV, and add a viewclass:

RV:
    viewclass: 'Label'
    RecycleBoxLayout:
        default_size: None, dp(56)
        default_size_hint: 1, None
        size_hint_y: None
        height: self.minimum_height
        orientation: 'vertical'

Then change the data keys to contain properties of the viewclass:

class RV(RecycleView):
    def __init__(self, **kwargs):
        super(RV, self).__init__(**kwargs)
        self.data = [{"text": "[email protected]"}, {"text": "[email protected]"}]

This may not be what you intended, but you can define your own viewclass and give it any properties that you need, as well as defining how it will display those properties.

Upvotes: 1

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