At the moment this is my kv code that is not scrollable:
BoxLayout:
id: bl
orientation: 'vertical'
padding: 10, 10
row_default_height: '48dp'
row_force_default: True
spacing: 10, 10
GridLayout:
id: layout_content
cols: 1
row_default_height: '20dp'
row_force_default: True
spacing: 0, 0
padding: 0, 0
Label:
text: 'You don''t have any downloads. Please add new download from Home screen'
How do you make the above kv code scrollable? I know that Kivy ScrollView only accept one child, and I have already make GridLayout to be child of a new ScrollView. But it's not working. Any suggestion?
You must carefully specify the size of your content to get the desired scroll/pan effect. By default, the size_hint is (1, 1), so the content size will fit your ScrollView exactly (you will have nothing to scroll). You must deactivate at least one of the size_hint instructions (x or y) of the child to enable scrolling.
The GridLayout arranges children in a matrix. It takes the available space and divides it into columns and rows, then adds widgets to the resulting “cells”. Changed in version 1.0. 7: The implementation has changed to use the widget size_hint for calculating column/row sizes.
According to the documentation for ScrollView you have to disable at least one of the ScrollView's child size_hint:
<Controller>:
layout_content: layout_content
BoxLayout:
id: bl
orientation: 'vertical'
padding: 10, 10
row_default_height: '48dp'
row_force_default: True
spacing: 10, 10
ScrollView:
size: self.size
GridLayout:
id: layout_content
size_hint_y: None
cols: 1
row_default_height: '20dp'
row_force_default: True
spacing: 0, 0
padding: 0, 0
Label:
text: "Lorem ipsum dolor sit amet"
And bind the layout's size to adapt itself:
# main.py
class Controller(FloatLayout):
layout_content=ObjectProperty(None)
def __init__(self, **kwargs):
super(Controller, self).__init__(**kwargs)
self.layout_content.bind(minimum_height=self.layout_content.setter('height'))
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