使用KivyMDList时打印列表的名称

问题描述

我正在开发一个显示电影信息的应用程序。但是出现了问题。如何找出已单击的mdlist中的哪一项？ 例如：如果我单击列表中的电影名称：小丑，它将打开一个名为joker的新屏幕。

from kivymd.app import MDApp
from kivymd.uix.button import MDIconButton,MDFloatingActionButton
from kivymd.uix.screen import Screen
from kivy.lang import Builder
from kivymd.uix.list import OneLineListItem,OneLineIconListItem,IconLeftWidget,OneLineRightIconListItem
from kivy.uix.screenmanager import ScreenManager
from kivy.uix.scrollview import ScrollView
from kivy.core.window import Window
from kivymd.uix.textfield import MDTextField
import imdb
from kivymd.uix.Boxlayout import BoxLayout
from kivy.uix.image import AsyncImage
from kivymd.uix.label import MDLabel


Window.size=(300,500)

Builds ="""
ScreenManager:
    Search_screen:
    Show_screen:
    Movie_screen:



<Search_screen>:
    name:'searchs'
    MDIconButton:
        icon:'movie'
       pos_hint:{'center_x':.5,'center_y':.5}
       on_press:app.hlo()
    MDTextField:
        id:wow
        hint_text:'search movie'
        pos_hint:{'center_x':.5,'center_y':.9}
        color_mode: 'accent'
        width:300
    
    

<Show_screen>:
    name:'show'
    ScrollView:
        MDList:
            id:container
    MDFloatingActionButton:
        icon:'keyboard-return'
        pos_hint:{'center_x':.9,'center_y':.1}
        on_press:app.move()

   

<Movie_screen>:
    name:'movie'
    ScrollView:
        BoxLayout:
            MDCard:
    MDIconButton:
        icon:'android'
        on_press:root.manager.current='searchs'

            

        
"""


class Search_screen(Screen):
    pass



class Show_screen(Screen):
    pass

class Movie_screen(Screen):
    pass


sm = ScreenManager()
sm.add_widget(Search_screen(name='search'))
sm.add_widget(Show_screen(name='show'))
sm.add_widget(Movie_screen(name='movie'))



class apps(MDApp):
    def build(self):
        screens = Screen()
        self.theme_cls.primary_pallete = "Orange"
        self.theme_cls.theme_style = 'Dark'
        self.helper = Builder.load_string(Builds)
        screens.add_widget(self.helper)
        return screens

def hlo(self):
    self.helper.current='show'
    ia = imdb.IMDb()
    name = self.helper.get_screen('searchs').ids.wow.text
    search = ia.search_movie(name)
    self.no=0
    self.j=0
    for self.i in search:                                                                  
                                                                                    
       self.helper.get_screen('show').ids.container.add_widget(OneLineListItem(text=str(self.i),#here on_presss it should print its name)


def wown(self,o):
    self.helper.current='movie'
    self.helper.get_screen('show').ids.container.clear_widgets()
def move(self):
    self.helper.current='searchs'
    self.helper.get_screen('show').ids.container.clear_widgets()

解决方法

您只需要向每个on_press添加一个on_release或OneLineListItem。这是一种经过修改的hlo()方法，用于执行此操作：

def hlo(self):
    self.helper.current='show'
    ia = imdb.IMDb()
    name = self.helper.get_screen('searchs').ids.wow.text
    search = ia.search_movie(name)
    self.no=0
    self.j=0
    for self.i in search:
       self.helper.get_screen('show').ids.container.add_widget(OneLineListItem(text=str(self.i),on_release=self.item_pressed))

def item_pressed(self,item):
    print('item_pressed:',item.text)