使用 KivyMDList 时打印列表名称

Question

我正在开发一个显示电影信息的应用程序。但是出现了一个问题；如何找出 mdlist 的哪一项被点击了？ 例如：如果我单击列表中的电影名称：小丑，它应该会打开一个名称为 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()

Answer 1

您只需为每个OneLineListItem 添加on_press 或on_release。这是一个修改后的hlo() 方法：

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)