我如何将选定的项目从recycleview分发到texinput [英] How can I dispaly the selected item from recycleview to the texinput
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问题描述
在下面的代码中，我想将所选项目从recycleview分配到来自MyTextInput类的text_box1，并且要显示在文本框中的代码位于SelectableLabel类->中.方法apply_selection.
In following code I want to dispaly the selected item from recycleview to the text_box1 which is from class MyTextInput and the code to display in textbox is in the class SelectableLabel --> method apply_selection.
当我打印所选项目时，它将在控制台上打印.当我尝试在textinput中显示它时，显示错误.我该怎么做.带有代码的解决方案将很容易理解.谢谢
the when I print the selected item it gets printed on console. when i try to display it in the textinput it shows the error. What changes should I do. the solution with the code will be good to understand. thank you
test.py文件
from kivy.app import App
from kivy.uix.textinput import TextInput
from kivy.lang import Builder
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.floatlayout import FloatLayout
from kivy.properties import NumericProperty, ListProperty, BooleanProperty, ObjectProperty,StringProperty
from kivy.uix.recycleview import RecycleView
from kivy.uix.recyclegridlayout import RecycleGridLayout
from kivy.uix.recycleview.views import RecycleDataViewBehavior
from kivy.uix.label import Label
from kivy.uix.recycleboxlayout import RecycleBoxLayout
from kivy.uix.behaviors import FocusBehavior
from kivy.uix.recycleview.layout import LayoutSelectionBehavior
import pandas as pd
Builder.load_string('''
<Body>:
canvas:
Color:
rgba:(1, 1, 1, 1)
Rectangle:
# pos: self.pos
size: self.size
<DropDownWidget>:
canvas:
Color:
rgba:(1, 1, 1, 1)
Rectangle:
# pos: self.pos
size: self.size
# orientation: 'vertical'
spacing: 20
txt_input: txt_input
rv: rv
# txt_input1: txt_input1
MyTextInput:
id: txt_input1
pos: 400,300
size_hint_y: None
height: 50
MyTextInput:
id: txt_input
hint_text:'Enter here'
size_hint_y: None
height: 50
RV:
id: rv
<MyTextInput>:
readonly: False
multiline: False
<SelectableLabel>:
# Draw a background to indicate selection
color: 0,0,0,1
canvas.before:
Color:
rgba: (0, 0, 1, .5) if self.selected else (1, 1, 1, 1)
Rectangle:
# pos: self.pos
size: self.size
<RV>:
canvas:
Color:
rgba: 0,0,0,.2
Line:
rectangle: self.x +1 , self.y, self.width - 2, self.height -2
bar_width: 10
scroll_type:['bars']
viewclass: 'SelectableLabel'
SelectableRecycleBoxLayout:
default_size: None, dp(20)
default_size_hint: 1, None
size_hint_y: None
height: self.minimum_height
orientation: 'vertical'
multiselect: False
''')
class SelectableRecycleBoxLayout(FocusBehavior, LayoutSelectionBehavior,
RecycleBoxLayout):
''' Adds selection and focus behaviour to the view. '''
class SelectableLabel(RecycleDataViewBehavior, Label):
''' Add selection support to the Label '''
index = None
selected = BooleanProperty(False)
selectable = BooleanProperty(True)
txt_input1 = ObjectProperty(None)
txt_input = ObjectProperty(None)
def refresh_view_attrs(self, rv, index, data):
''' Catch and handle the view changes '''
self.index = index
return super(SelectableLabel, self).refresh_view_attrs(
rv, index, data)
def on_touch_down(self, touch):
''' Add selection on touch down '''
if super(SelectableLabel, self).on_touch_down(touch):
return True
if self.collide_point(*touch.pos) and self.selectable:
return self.parent.select_with_touch(self.index, touch)
def apply_selection(self, rv, index, is_selected):
''' Respond to the selection of items in the view. '''
self.selected = is_selected
if is_selected:
self.ids.MyTextInput.txt_input1.text = str(rv.data[index])
print("selection changed to {0}".format(rv.data[index]))
class RV(RecycleView):
def __init__(self, **kwargs):
super(RV, self).__init__(**kwargs)
class DropDownWidget(BoxLayout):
txt_input = ObjectProperty()
rv = ObjectProperty()
txt_input1 = ObjectProperty()
class MyTextInput(TextInput):
txt_input = ObjectProperty()
txt_input1 = ObjectProperty(None)
flt_list = ObjectProperty()
word_list = ListProperty()
# this is the variable storing the number to which the look-up will start
starting_no = NumericProperty(3)
suggestion_text = ''
def __init__(self, **kwargs):
super(MyTextInput, self).__init__(**kwargs)
def on_text(self, instance, value):
# find all the occurrence of the word
self.parent.ids.rv.data = []
matches = [self.word_list[i] for i in range(len(self.word_list)) if
self.word_list[i][:self.starting_no] == value[:self.starting_no]]
# display the data in the recycleview
display_data = []
for i in matches:
display_data.append({'text': i})
self.parent.ids.rv.data = display_data
# ensure the size is okay
if len(matches) <= 10:
self.parent.height = (50 + (len(matches) * 20))
else:
self.parent.height = 240
def keyboard_on_key_down(self, window, keycode, text, modifiers):
if self.suggestion_text and keycode[1] == 'tab':
self.insert_text(self.suggestion_text + ' ')
return True
return super(MyTextInput, self).keyboard_on_key_down(window, keycode, text, modifiers)
class Body(FloatLayout):
def __init__(self, **kwargs):
f = pd.read_csv("stoploss.csv")
fl = len(f.index)
file = pd.DataFrame(f, columns=['Stock Symbol', 'Purchase Price', 'Stock Name', 'Stop Loss(%)'])
j = 0
wl = []
for i in range(fl):
for index in range(1):
columnSeriesObj = file.iloc[:, 2]
# pp = iter(columnSeriesObj.values)
# pp1 = next(pp)
# print(pp1)
wl.append(columnSeriesObj.values[i])
tp = tuple(wl)
print(str(tp))
# def convertTuple(tup):
# str = ''.join(tup)
# return str
# print(convertTuple(tp))
super(Body, self).__init__(**kwargs)
widget_1 = DropDownWidget(pos_hint={'center_x': .5, 'center_y': .5},
size_hint=(None, None), size=(600, 60))
widget_1.ids.txt_input.word_list = wl
widget_1.ids.txt_input.starting_no = 3
self.add_widget(widget_1)
class MyApp(App):
def build(self):
return Body()
if __name__ == "__main__":
MyApp().run()
但是我遇到以下错误:
"C:\Users\Rushi Dada\AppData\Local\Programs\Python\Python37\python.exe" D:/FirebaseLoginScreen-master/try_code.py
[INFO ] [Logger ] Record log in C:\Users\Rushi Dada\.kivy\logs\kivy_20-12-12_86.txt
[INFO ] [deps ] Successfully imported "kivy_deps.gstreamer" 0.3.1
[INFO ] [deps ] Successfully imported "kivy_deps.angle" 0.1.10
[INFO ] [deps ] Successfully imported "kivy_deps.glew" 0.1.12
[INFO ] [deps ] Successfully imported "kivy_deps.sdl2" 0.1.23
[INFO ] [Kivy ] v1.11.1
[INFO ] [Kivy ] Installed at "C:\Users\Rushi Dada\AppData\Local\Programs\Python\Python37\lib\site-packages\kivy\__init__.py"
[INFO ] [Python ] v3.7.3 (v3.7.3:ef4ec6ed12, Mar 25 2019, 22:22:05) [MSC v.1916 64 bit (AMD64)]
[INFO ] [Python ] Interpreter at "C:\Users\Rushi Dada\AppData\Local\Programs\Python\Python37\python.exe"
[INFO ] [Factory ] 184 symbols loaded
[INFO ] [Image ] Providers: img_tex, img_dds, img_sdl2, img_pil, img_gif (img_ffpyplayer ignored)
[INFO ] [Text ] Provider: sdl2
('Tesla inc', 'Tata Motors Limited ', 'asv', 'tesla', 'ploul', 'fd', 's', 'asdsd', 'trtdfsddfdfd', 'abc')
[INFO ] [Window ] Provider: sdl2
[INFO ] [GL ] Using the "OpenGL" graphics system
[INFO ] [GL ] GLEW initialization succeeded
[INFO ] [GL ] Backend used <glew>
[INFO ] [GL ] OpenGL version <b'4.6.0 NVIDIA 391.35'>
[INFO ] [GL ] OpenGL vendor <b'NVIDIA Corporation'>
[INFO ] [GL ] OpenGL renderer <b'GeForce GT 635M/PCIe/SSE2'>
[INFO ] [GL ] OpenGL parsed version: 4, 6
[INFO ] [GL ] Shading version <b'4.60 NVIDIA'>
[INFO ] [GL ] Texture max size <16384>
[INFO ] [GL ] Texture max units <32>
[INFO ] [Window ] auto add sdl2 input provider
[INFO ] [Window ] virtual keyboard not allowed, single mode, not docked
[INFO ] [GL ] NPOT texture support is available
[INFO ] [Base ] Start application main loop
[INFO ] [Base ] Leaving application in progress...
Traceback (most recent call last):
File "kivy\properties.pyx", line 860, in kivy.properties.ObservableDict.__getattr__
KeyError: 'MyTextInput'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "D:/FirebaseLoginScreen-master/try_code.py", line 291, in <module>
MyApp().run()
File "C:\Users\Rushi Dada\AppData\Local\Programs\Python\Python37\lib\site-packages\kivy\app.py", line 855, in run
runTouchApp()
File "C:\Users\Rushi Dada\AppData\Local\Programs\Python\Python37\lib\site-packages\kivy\base.py", line 504, in runTouchApp
EventLoop.window.mainloop()
File "C:\Users\Rushi Dada\AppData\Local\Programs\Python\Python37\lib\site-packages\kivy\core\window\window_sdl2.py", line 747, in mainloop
self._mainloop()
File "C:\Users\Rushi Dada\AppData\Local\Programs\Python\Python37\lib\site-packages\kivy\core\window\window_sdl2.py", line 479, in _mainloop
EventLoop.idle()
File "C:\Users\Rushi Dada\AppData\Local\Programs\Python\Python37\lib\site-packages\kivy\base.py", line 342, in idle
self.dispatch_input()
File "C:\Users\Rushi Dada\AppData\Local\Programs\Python\Python37\lib\site-packages\kivy\base.py", line 327, in dispatch_input
post_dispatch_input(*pop(0))
File "C:\Users\Rushi Dada\AppData\Local\Programs\Python\Python37\lib\site-packages\kivy\base.py", line 233, in post_dispatch_input
listener.dispatch('on_motion', etype, me)
File "kivy\_event.pyx", line 707, in kivy._event.EventDispatcher.dispatch
File "C:\Users\Rushi Dada\AppData\Local\Programs\Python\Python37\lib\site-packages\kivy\core\window\__init__.py", line 1402, in on_motion
self.dispatch('on_touch_down', me)
File "kivy\_event.pyx", line 707, in kivy._event.EventDispatcher.dispatch
File "C:\Users\Rushi Dada\AppData\Local\Programs\Python\Python37\lib\site-packages\kivy\core\window\__init__.py", line 1418, in on_touch_down
if w.dispatch('on_touch_down', touch):
File "kivy\_event.pyx", line 707, in kivy._event.EventDispatcher.dispatch
File "C:\Users\Rushi Dada\AppData\Local\Programs\Python\Python37\lib\site-packages\kivy\uix\widget.py", line 549, in on_touch_down
if child.dispatch('on_touch_down', touch):
File "kivy\_event.pyx", line 707, in kivy._event.EventDispatcher.dispatch
File "C:\Users\Rushi Dada\AppData\Local\Programs\Python\Python37\lib\site-packages\kivy\uix\widget.py", line 549, in on_touch_down
if child.dispatch('on_touch_down', touch):
File "kivy\_event.pyx", line 707, in kivy._event.EventDispatcher.dispatch
File "C:\Users\Rushi Dada\AppData\Local\Programs\Python\Python37\lib\site-packages\kivy\uix\scrollview.py", line 647, in on_touch_down
if self.dispatch('on_scroll_start', touch):
File "kivy\_event.pyx", line 707, in kivy._event.EventDispatcher.dispatch
File "C:\Users\Rushi Dada\AppData\Local\Programs\Python\Python37\lib\site-packages\kivy\uix\scrollview.py", line 736, in on_scroll_start
return self.simulate_touch_down(touch)
File "C:\Users\Rushi Dada\AppData\Local\Programs\Python\Python37\lib\site-packages\kivy\uix\scrollview.py", line 642, in simulate_touch_down
ret = super(ScrollView, self).on_touch_down(touch)
File "C:\Users\Rushi Dada\AppData\Local\Programs\Python\Python37\lib\site-packages\kivy\uix\widget.py", line 549, in on_touch_down
if child.dispatch('on_touch_down', touch):
File "kivy\_event.pyx", line 707, in kivy._event.EventDispatcher.dispatch
File "C:\Users\Rushi Dada\AppData\Local\Programs\Python\Python37\lib\site-packages\kivy\uix\behaviors\focus.py", line 443, in on_touch_down
return super(FocusBehavior, self).on_touch_down(touch)
File "C:\Users\Rushi Dada\AppData\Local\Programs\Python\Python37\lib\site-packages\kivy\uix\widget.py", line 549, in on_touch_down
if child.dispatch('on_touch_down', touch):
File "kivy\_event.pyx", line 707, in kivy._event.EventDispatcher.dispatch
File "D:/FirebaseLoginScreen-master/try_code.py", line 192, in on_touch_down
return self.parent.select_with_touch(self.index, touch)
File "C:\Users\Rushi Dada\AppData\Local\Programs\Python\Python37\lib\site-packages\kivy\uix\behaviors\compoundselection.py", line 345, in select_with_touch
self.select_node(node)
File "C:\Users\Rushi Dada\AppData\Local\Programs\Python\Python37\lib\site-packages\kivy\uix\recycleview\layout.py", line 103, in select_node
self.apply_selection(node, view, True)
File "C:\Users\Rushi Dada\AppData\Local\Programs\Python\Python37\lib\site-packages\kivy\uix\recycleview\layout.py", line 143, in apply_selection
view.apply_selection(self.recycleview, index, is_selected)
File "D:/FirebaseLoginScreen-master/try_code.py", line 200, in apply_selection
self.ids.MyTextInput.txt_input1.text = str(rv.data[index])
File "kivy\properties.pyx", line 863, in kivy.properties.ObservableDict.__getattr__
AttributeError: 'super' object has no attribute '__getattr__'
Process finished with exit code 1
推荐答案
您正尝试使用
访问MyTextInput实例
self.ids.MyTextInput.txt_input1.text = str(rv.data[index])
SelectableLabel类中的
，但是SelectableLabel实例根本没有ids，因此将无法使用.在代码的任何地方都没有定义MyTextInput id.我猜您打算设置出现在DropDownWidget中的MyTextInput实例之一的text.
in the SelectableLabel class, but the SelectableLabel instance has no ids at all, so that won't work. And there is no MyTextInput id defined anywhere in your code. I am guessing that you intend to set the text of one of the MyTextInput instances that appear in your DropDownWidget.
为了访问您在Body类中创建的DropDownWidget，您可以通过以下修改将其引用保存在__init__()方法中:
In order to access the DropDownWidget that you create in the Body class, you can just save a reference to it in the __init__() method by making the following slight modifications:
super(Body, self).__init__(**kwargs)
self.widget_1 = DropDownWidget(pos_hint={'center_x': .5, 'center_y': .5},
size_hint=(None, None), size=(600, 60))
self.widget_1.ids.txt_input.word_list = wl
self.widget_1.ids.txt_input.starting_no = 3
self.add_widget(self.widget_1)
然后，在SelectableLabel的apply_selection()方法中，您可以像这样调整MyTextInput的访问权限:
Then, in the apply_selection() method of SelectableLabel, you can adjust the access of the MyTextInput like this:
def apply_selection(self, rv, index, is_selected):
''' Respond to the selection of items in the view. '''
self.selected = is_selected
if is_selected:
# self.ids.MyTextInput.txt_input1.text = str(rv.data[index])
App.get_running_app().root.widget_1.ids.txt_input1.text = str(rv.data[index])
print("selection changed to {0}".format(rv.data[index]))
这篇关于我如何将选定的项目从recycleview分发到texinput的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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