kivymd
For some reason that I did not identify the SwipeToDeleteItem only works on the computer.
Description of the Bug
For some reason that I did not identify the SwipeToDeleteItem only works on the computer.
I click and hold the item, drag it to the left and it does not work on android, only on the computer.
Code and Logs
Code extracted from End full code
Before sending this model of the documentation I took care to package it for testing and the same problem occurs.
from kivy.lang import Builder
from kivy.properties import StringProperty
from kivymd.app import MDApp
from kivymd.uix.card import MDCardSwipe
KV = '''
<SwipeToDeleteItem>:
size_hint_y: None
height: content.height
MDCardSwipeLayerBox:
padding: "8dp"
MDIconButton:
icon: "trash-can"
pos_hint: {"center_y": .5}
on_release: app.remove_item(root)
MDCardSwipeFrontBox:
OneLineListItem:
id: content
text: root.text
_no_ripple_effect: True
MDScreen:
MDBoxLayout:
orientation: "vertical"
spacing: "10dp"
MDToolbar:
elevation: 10
title: "MDCardSwipe"
ScrollView:
MDList:
id: md_list
padding: 0
'''
class SwipeToDeleteItem(MDCardSwipe):
text = StringProperty()
class TestCard(MDApp):
def __init__(self, **kwargs):
super().__init__(**kwargs)
self.screen = Builder.load_string(KV)
def build(self):
return self.screen
def remove_item(self, instance):
self.screen.ids.md_list.remove_widget(instance)
def on_start(self):
for i in range(20):
self.screen.ids.md_list.add_widget(
SwipeToDeleteItem(text=f"One-line item {i}")
)
TestCard().run()
Versions
OS: Ubuntu 20.04.2 LTS Python: 3.8.5 Kivy: 2.0.0 KivyMD: 0.104.2.dev0, git-8f83652, 2021-05-16
The main issue is with MDList padding is 0 which means on the phone screen it is the very edge of the phone nearly impossible to touch. The other issue I found is the default swipe_distance is too small to comfortably touch and move the slide.
This is the solution
from kivy.lang import Builder
from kivy.properties import StringProperty
from kivymd.app import MDApp
from kivymd.uix.card import MDCardSwipe
KV = '''
<SwipeToDeleteItem>:
size_hint_y: None
height: content.height
swipe_distance: "200dp"
MDCardSwipeLayerBox:
padding: "8dp"
MDIconButton:
icon: "trash-can"
pos_hint: {"center_y": .5}
on_release: app.remove_item(root)
MDCardSwipeFrontBox:
OneLineListItem:
id: content
text: root.text
_no_ripple_effect: True
MDScreen:
MDBoxLayout:
orientation: "vertical"
spacing: "10dp"
MDToolbar:
elevation: 10
title: "MDCardSwipe"
ScrollView:
MDList:
id: md_list
padding: 2
'''
class SwipeToDeleteItem(MDCardSwipe):
text = StringProperty()
class TestCard(MDApp):
def __init__(self, **kwargs):
super().__init__(**kwargs)
self.screen = Builder.load_string(KV)
def build(self):
return self.screen
def remove_item(self, instance):
self.screen.ids.md_list.remove_widget(instance)
def on_start(self):
for i in range(20):
self.screen.ids.md_list.add_widget(
SwipeToDeleteItem(text=f"One-line item {i}")
)
TestCard().run()
This should be mentioned in the document please.
