問題描述
我正在使用 Python-2.7 和 Kivy.當我運行 test.py 時，會顯示一個顯示按鈕.當我單擊顯示按鈕時，會顯示一個標簽和值.我正在從數據庫中獲取它，但現在我將它定義為一個靜態數組.
I am using Python-2.7 and Kivy. When I run test.py then a show button shows. When I click on the show button then a label and value shows. I am fetching it from the database but now I defined it as a static array.
當我點擊 Item1 標簽然后調用 def open_form 并在使用 id 調用 EditPopup(self) 后傳遞 id 11 并顯示一個帶有值的彈出窗口.
When I click on Item1 label then call def open_form and pass id 11 after calling EditPopup(self) with id and show a popup with value.
之后我更改 itemCode 并單擊確定按鈕，然后它會更新數據庫中的數據.
After that I change itemCode and click on the ok button then it updates data in the database.
之后我調用 Invoice().abc() 然后它在 Pycharm 控制臺中打印更新的數據，但不顯示 layout.add_widget 中的最新數據(彈出窗口).
After that I call Invoice().abc() then it prints the updated data in Pycharm console but not showing latest the data in layout.add_widget(Popup window).
誰能告訴我哪里出錯了?
Can someone tell me where am I making a mistake?
from kivy.uix.label import Label
from kivy.uix.screenmanager import Screen
from kivy.app import App
from kivy.core.window import Window
from functools import partial
from kivy.uix.popup import Popup
from kivy.properties import BooleanProperty, ListProperty, StringProperty, ObjectProperty, NumericProperty
import sqlite3 as lite
#con = lite.connect('test.db')
#con.text_factory = str
#cur = con.cursor()
Window.clearcolor = (0.5, 0.5, 0.5, 1)
Window.size = (600, 600)
class MyLabel(Label):
pass
class EditPopup(Popup):
mode = StringProperty("")
label_rec_id = StringProperty("Id")
col_data = ListProperty(["?", "?", "?"])
index = NumericProperty(0)
def __init__(self, obj, **kwargs):
super(EditPopup, self).__init__(**kwargs)
if obj.mode == "Update":
#cur.execute("SELECT * FROM `item` WHERE itemId=?", (edit_id,))
#row = cur.fetchone()
row = (11, 'Item1', '1001')
print(row[0])
self.col_data[0] = str(row[0])
self.col_data[1] = row[1]
self.col_data[2] = row[2]
def update(self,obj):
#cur.execute("UPDATE `item` SET itemName=?, itemCode=? WHERE itemId=?",
#('Item1', 9999, 11))
#con.commit()
Invoice().abc()
class Invoice(Screen):
def __init__(self, **kwargs):
super(Invoice, self).__init__(**kwargs)
def abc(self):
#fetching from database
#cur.execute("SELECT * FROM `item` order by itemId asc")
#rows = cur.fetchall()
rows = [(11, 'Item1', '1001'), (12, 'Item2', '2001'), (13, 'Item3', '102')]
print(rows)
layout = self.ids['invoices']
for row in rows:
layout.add_widget(MyLabel(text=str('[ref=world]' + row[1]) + '[/ref]',
size_hint_x=.35,
halign='left',
markup=True,
on_ref_press=partial(self.open_form, row[0])))
def open_form(self, id, *args):
global edit_id
edit_id = id
self.mode = "Update"
popup = EditPopup(self)
popup.open()
class Test(App):
def build(self):
return Invoice()
if __name__ == '__main__':
Test().run()
test.kv
<Button@Button>:
font_size: 15
font_name: 'Verdana'
size_hint_y:None
height: 30
<MyLabel>:
font_size: 15
font_name: 'Verdana'
size_hint_y:None
height: 30
text_size: self.size
valign: 'middle'
canvas.before:
Color:
rgb: .6, .6, .6
Rectangle:
pos: self.pos
size: self.size
<EditPopup>:
title: self.mode + " Item"
size_hint: None, None
title_size: 20
title_font: "Verdana"
size: 400, 275
auto_dismiss: False
BoxLayout:
orientation: "vertical"
GridLayout:
cols: 2
#backgroun_color: 0, 0.517, 0.705, 1
spacing: 10, 10
padding: 20, 20
Label:
text: root.label_rec_id
text_size: self.size
Label:
id: itemId
text: root.col_data[0]
text_size: self.size
Label:
text: "Item Name"
text_size: self.size
valign: 'middle'
TextInput:
id: itemName
text: root.col_data[1]
text_size: self.size
Label:
text: "State Code"
text_size: self.size
valign: 'middle'
TextInput:
id: itemCode
text: root.col_data[2]
text_size: self.size
GridLayout:
cols: 2
padding: 10, 0, 10, 10
spacing: 10, 10
row_default_height: '20dp'
size_hint: .55, .3
pos_hint: {'x': .25, 'y':.65}
Button:
size_hint_x: .5
text: "Ok"
on_release:
root.update(root)
root.dismiss()
Button:
size_hint_x: .5
text: "Cancel"
on_release: root.dismiss()
<Invoice>:
BoxLayout:
orientation: "vertical"
padding : 15, 15
BoxLayout:
orientation: "vertical"
padding : 5, 5
size_hint: .6, None
pos_hint: {'x': .18,}
BoxLayout:
orientation: "horizontal"
padding : 5, 5
spacing: 10, 10
size: 800, 40
size_hint: 1, None
Button:
text: "Show"
size_hint_x: .05
spacing_x: 30
on_press:root.abc()
BoxLayout:
orientation: "horizontal"
size_hint: 1, 1
BoxLayout:
orientation: "vertical"
size_hint: .5, 1
padding : 0, 15
spacing: 10, 10
size: 500, 30
GridLayout:
id: invoices
cols: 2
#orientation: "horizontal"
padding : 5, 0
spacing: 10, 0
#size: 500, 30
size_hint: 1, 1
pos: self.pos
size: self.size
推薦答案
您正在創建一個新的 Invoice 實例，而不是使用現有的實例.
You are creating a new Invoice instance instead of using the existing one.
Invoice().abc()
試試吧:
class EditPopup(Popup):
mode = StringProperty("")
label_rec_id = StringProperty("Id")
col_data = ListProperty(["?", "?", "?"])
index = NumericProperty(0)
def __init__(self, obj, **kwargs):
super(EditPopup, self).__init__(**kwargs)
self.obj = obj # will need it later...
def update(self,obj):
#cur.execute("UPDATE `item` SET itemName=?, itemCode=? WHERE itemId=?",
#('Item1', 9999, 11))
#con.commit()
self.obj.abc() # was Invoice().abc()
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