時にエラーはIndexErrorを示す行をクリック：範囲外のリストインデックス

Question

test.py

import kivy 

kivy.require('1.9.0') # replace with your current kivy version ! 
import sqlite3 as lite 
from kivy.app import App 
from kivy.uix.boxlayout import BoxLayout 
from kivy.properties import BooleanProperty, ListProperty, ObjectProperty,NumericProperty 
from kivy.lang import Builder 
from kivy.uix.dropdown import DropDown 

from kivy.uix.recycleview.views import RecycleDataViewBehavior 
from kivy.uix.button import Button 
from kivy.uix.recyclegridlayout import RecycleGridLayout 
from kivy.uix.behaviors import FocusBehavior 
from kivy.uix.recycleview.layout import LayoutSelectionBehavior 
from kivy.uix.popup import Popup 
from kivy.core.window import Window  
Window.size = (900, 500) 



MAX_TABLE_COLS = 3 

con = lite.connect('demo.db') 
con.text_factory = str 
cur = con.cursor() 

class EditStatePopup(Popup): 
    col_data = ListProperty(["?", "?", "?"]) 
    index = NumericProperty(0) 

    def __init__(self, obj, **kwargs): 
     super(EditStatePopup, self).__init__(**kwargs) 
     self.index = obj.index 
     self.col_data[0] = obj.rv_data[self.index]["Id"] 
     self.col_data[1] = obj.rv_data[self.index]["Name"] 
     self.col_data[2] = obj.rv_data[self.index]["Code"] 

    def package_changes(self, stateName, stateCode): 
     self.col_data[1] = stateName 
     self.col_data[2] = stateCode 


class SelectableRecycleGridLayout(FocusBehavior, LayoutSelectionBehavior, 
            RecycleGridLayout): 
    ''' Adds selection and focus behaviour to the view. ''' 


class SelectableButton(RecycleDataViewBehavior, Button): 
    ''' Add selection support to the Button ''' 
    index = None 
    selected = BooleanProperty(False) 
    selectable = BooleanProperty(True) 
    rv_data = ObjectProperty(None) 
    start_point = NumericProperty(0) 

    def __init__(self, **kwargs): 
     super(SelectableButton, self).__init__(**kwargs) 
     Clock.schedule_interval(self.update, .0005) 

    def update(self, *args): 
     self.text = self.rv_data[self.index][self.key] 

    def on_press(self): 
     popup = EditStatePopup(self) 
     popup.open() 

    def refresh_view_attrs(self, rv, index, data): 
     ''' Catch and handle the view changes ''' 
     self.index = index 
     return super(SelectableButton, self).refresh_view_attrs(rv, index, data) 

    def on_touch_down(self, touch): 
     ''' Add selection on touch down ''' 
     if super(SelectableButton, 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 
     self.rv_data = rv.data 
     #print("selection changed to {0}".format(rv.data[1])) 

class RV(BoxLayout): 
    data_items = ListProperty([]) 
    col1 = ListProperty() 
    col2 = ListProperty() 
    col3 = ListProperty() 

    def __init__(self, **kwargs): 
     super(RV, self).__init__(**kwargs) 
     self.get_states() 

    def update(self): 
     self.col1 = [{'Id': str(x[0]), 'Name': x[1], 'Code': x[2], 'key': 'Id'} for x in self.data_items] 
     self.col2 = [{'Id': str(x[0]), 'Name': x[1], 'Code': x[2], 'key': 'Name'} for x in self.data_items] 
     self.col3 = [{'Id': str(x[0]), 'Name': x[1], 'Code': x[2], 'key': 'Code'} for x in self.data_items] 

    def get_states(self): 

     rows = [(1, 'Yash', 'Chopra'), (2, 'amit', 'Kumar')] 
     # create data_items 

     i = 0 
     for row in rows: 
      self.data_items.append([row[0], row[1], row[2], i]) 
      i += 1 
     self.update() 

class CustDrop(DropDown): 
    def __init__(self, **kwargs): 
     super(CustDrop, self).__init__(**kwargs) 
     self.select('') 

class MainMenu(BoxLayout): 
    rv = ObjectProperty(None) 
    states = ObjectProperty(None) 
    dropdown = ObjectProperty(None) 

    def display_states(self): 
     self.dropdown.dismiss() 
     self.remove_widgets() 
     self.rv = RV() 
     self.states.add_widget(self.rv) 

    def remove_widgets(self): 
     for child in [child for child in self.states.children]: 
      self.states.remove_widget(child) 

    def update_states(self, obj): 
     # update data_items 
     # obj.start_point + 1 --- skip State_ID 
     self.rv.data_items[obj.index] = [ obj.col_data[0], obj.col_data[1], obj.col_data[2], obj.index] 
     self.rv.update() 
     # update Database Table 
     cur.execute("UPDATE m_state SET state_name=?, state_code=? WHERE state_id=?", 
       (obj.col_data[1], obj.col_data[2], obj.col_data[0])) 
     con.commit() 

class TestApp(App): 
    title = "test" 

    def build(self): 
     self.root = Builder.load_file('test.kv') 
     return MainMenu() 



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

test.kv

#:kivy 1.10.0 
#:import CoreImage kivy.core.image.Image 
#:import os os 

<EditStatePopup>: 
    title: "Update State" 
    size_hint: None, None 
    size: 300, 300 
    auto_dismiss: False 

    BoxLayout: 
     orientation: "vertical" 
     GridLayout: 
      cols: 2 
      Label: 
       text: "Id" 
      Label: 
       id: Id 
       text: root.col_data[0] 
      Label: 
       text: "Name" 
      TextInput: 
       id: Name 
       text: root.col_data[1] 
      Label: 
       text: "Code" 
      TextInput: 
       id: stateCode 
       text: root.col_data[2] 

      Button: 
       size_hint: 1, 0.4 
       text: "Cancel" 
       on_release: root.dismiss() 

      Button: 
       size_hint: 1, 0.4 
       text: "Ok" 
       on_release: 
        root.package_changes(Name.text, Code.text) 
        #root.obj.update_states(root.start_point, root.max_table_cols, root.new_data) 
        app.root.update_states(root) 
        root.dismiss() 



<SelectableButton>: 
    # Draw a background to indicate selection 
    canvas.before: 
     Color: 
      rgba: (0, 0.517, 0.705, 1) if self.selected else (0, 0.517, 0.705, 1) 
     Rectangle: 
      pos: self.pos 
      size: self.size 


<MyRV@RecycleView>: 
    viewclass: 'SelectableButton' 
    SelectableRecycleGridLayout: 
     cols: 1 
     default_size: None, dp(26) 
     default_size_hint: 1, None 
     size_hint_y: None 
     height: self.minimum_height 
     orientation: 'vertical' 
     multiselect: True 
     touch_multiselect: True 

<RV>: 
    BoxLayout: 
     orientation: "vertical" 

     GridLayout: 
      size_hint: 1, None 
      size_hint_y: None 
      height: 25 
      cols: 3 

      Label: 
       size_hint_x: .1 
       text: "Id" 
      Label: 
       size_hint_x: .5 
       text: "Name" 
      Label: 
       size_hint_x: .4 
       text: "Code" 

     BoxLayout: 
      MyRV: 
       size_hint_x: .1 
       data: root.col1 
      MyRV: 
       size_hint_x: .5 
       data: root.col2 
      MyRV: 
       size_hint_x: .4 
       data: root.col3 


<DropdownButton@Button>: 
    border: (0, 16, 0, 16) 
    text_size: self.size 
    valign: "middle" 
    padding_x: 5 
    size_hint_y: None 
    height: '30dp' 
    #on_release: dropdown.select('') 
    #on_release: app.root.test 
    background_color: 90 , 90, 90, 90 
    color: 0, 0.517, 0.705, 1 


#<CustDrop>: 
    #id: dropdown 
    #auto_width: False 
    #width: 150 
    #DropdownButton: 
     #text: 'Add State' 
     #on_release: os.system("python m_State.py") 

    #DropdownButton: 
     #text: 'List State' 
     #on_release: root.display_users() 

<MenuButton@Button>: 
    text_size: self.size 
    valign: "middle" 
    padding_x: 5 
    size : (80,30) 
    size_hint : (None, None) 
    background_color: 90 , 90, 90, 90 
    background_normal: '' 
    color: 0, 0.517, 0.705, 1 
    border: (0, 10, 0, 0) 


<MainMenu>: 
    states: states 
    dropdown: dropdown 

    BoxLayout: 
     orientation: 'vertical' 
     #spacing : 10 

     BoxLayout: 
      canvas.before: 
       Rectangle: 
        pos: self.pos 
        size: self.size 

      size_hint_y: 1 

      MenuButton: 
       id: btn 
       text: 'Menu' 
       size : (60,30) 
       on_release: dropdown.open(self) 

      CustDrop: 
       id: dropdown 
       auto_width: False 
       width: 150 

       DropdownButton: 
        text: 'user' 
        size_hint_y: None 
        height: '32dp' 
        #on_release: dropdown3.open(self) 
        on_release: root.display_states() 

     BoxLayout: 
      id: states 
      size_hint_y: 9 

     Label: 
      size_hint_y: 9 

1. 私はメニューをクリックすると、その後のサブメニューuser.whenを表示ユーザーをクリックし、ユーザーの行をクリックしてエラーを表示すると、ユーザーのリストを表示します。IndexError：リストのインデックスが範囲外です。
2. update_states（）関数は、データベース
に

Answer 1

1.When i click on menu then show sub menu user.when click on user then show list of user when i click on any row of user then show error like attached image.

を更新しませんあなたが行を反復処理している、あなただけの2行が、3列

2. update_states() function does not update in database

を持っている私はcompilatorとは思いませんその中にエラーが少ないのでその機能を終了する

あなたのコードを手に入れるには、私は多くの変更を加えなければならない

まず

... 

class RV(BoxLayout): 
    data_items = ListProperty([]) 
    col1 = ListProperty() 
    col2 = ListProperty() 
    col3 = ListProperty() 

    def __init__(self, **kwargs): 
     super(RV, self).__init__(**kwargs) 
     self.get_states() 

    def update(self): 
     self.col1 = [{'Id': str(x[0]), 'Name': x[1], 'Code': x[2], 'key': 'Id'} for x in self.data_items] 
     self.col2 = [{'Id': str(x[0]), 'Name': x[1], 'Code': x[2], 'key': 'Name'} for x in self.data_items] 
     self.col3 = [{'Id': str(x[0]), 'Name': x[1], 'Code': x[2], 'key': 'Code'} for x in self.data_items] 

    def get_states(self): 

     #cur.execute("SELECT * FROM `m_state` order by state_id asc") 
     #rows = cur.fetchall() 
     rows = [(1, 'Yash', 'Chopra'), (2, 'amit', 'Kumar')] 
     # create data_items 
     '''for row in rows: 
      for col in row: 
       self.data_items.append(col)''' 
     i = 0 
     for row in rows: 
      self.data_items.append([row[0], row[1], row[2], i]) 
      i += 1 
     self.update() 

... 

その後、KVにそれぞれ

... 

<RV>: 
    BoxLayout: 
     orientation: "vertical" 

     GridLayout: 
      size_hint: 1, None 
      size_hint_y: None 
      height: 25 
      cols: 3 

      Label: 
       size_hint_x: .1 
       text: "Id" 
      Label: 
       size_hint_x: .5 
       text: "Name" 
      Label: 
       size_hint_x: .4 
       text: "Code" 

     BoxLayout: 
      MyRV: 
       size_hint_x: .1 
       data: root.col1 
      MyRV: 
       size_hint_x: .5 
       data: root.col2 
      MyRV: 
       size_hint_x: .4 
       data: root.col3 

... 

は、自動的にテキストを変更するにはCOL1、COL2、COL3によりRVSのデータを交換するのpythonファイルにRVSのデータを準備します私は

... 

class SelectableButton(RecycleDataViewBehavior, Button): 
    ''' Add selection support to the Button ''' 
    index = None 
    selected = BooleanProperty(False) 
    selectable = BooleanProperty(True) 
    rv_data = ObjectProperty(None) 
    start_point = NumericProperty(0) 

    def __init__(self, **kwargs): 
     super(SelectableButton, self).__init__(**kwargs) 
     Clock.schedule_interval(self.update, .0005) 

    def update(self, *args): 
     self.text = self.rv_data[self.index][self.key] 

... 

    def on_press(self): 
     popup = EditStatePopup(self) 
     popup.open() 

... 

機能をスケジュールするためにあなたがを編集することも持っていたあなたがそれらを編集RVSのボタン、変更を行うためにはるかに簡単になりますので、私は彼と一緒にMAINMENUにindex属性を追加

... 

class EditStatePopup(Popup): 
    col_data = ListProperty(["?", "?", "?"]) 
    index = NumericProperty(0) 

    def __init__(self, obj, **kwargs): 
     super(EditStatePopup, self).__init__(**kwargs) 
     self.index = obj.index 
     self.col_data[0] = obj.rv_data[self.index]["Id"] 
     self.col_data[1] = obj.rv_data[self.index]["Name"] 
     self.col_data[2] = obj.rv_data[self.index]["Code"] 

最後にMainMenuクラスのupdtate_statesを編集：

... 

class MainMenu(BoxLayout): 
... 
    def update_states(self, obj): 
     # update data_items 
     # obj.start_point + 1 --- skip State_ID 
     self.rv.data_items[obj.index] = [ obj.col_data[0], obj.col_data[1], obj.col_data[2], obj.index] 
     self.rv.update() 
     # update Database Table 
     cur.execute("UPDATE m_state SET state_name=?, state_code=? WHERE state_id=?", 
       (obj.col_data[1], obj.col_data[2], obj.col_data[0])) 
     con.commit() 

たものを作るときは注意してください変更。私は、これはあなたがインポートすることを忘れている