时间戳

首页 > 解决方案 > 我如何通过 id 获得 2 个 TextInput 值

python - 我如何通过 id 获得 2 个 TextInput 值

问题描述

所以我有一个必须创建任务的类，它看起来像这样

class CreateTask(Screen):
    def CreateTask(self,*args):
        bl = BoxLayout(orientation="vertical",spacing=10)
        name=self.root.ids.TaskName.text
        desc=self.root.ids.TaskDesc.text
        bl.add_widget(name)
        bl.add_widget(desc)
        self.root.MainLayout.add_widget(bl)

但我得到错误'CreateTask'对象没有属性'root'，那么我如何通过id从2个TextInputs获取文本？

这是我那个类的kv代码

<CreateTask>
    name:"third"
    AnchorLayout:
        size:root.size
        anchor_x:"center"
        anchor_y:"top"
        BoxLayout:
            orientation:"vertical"
            size_hint:[0.6,0.6]
            Label:
                text:"Input Task Name"
            TextInput:
                size_hint:[0.2,0.2]
                id:"TaskName"
            TextInput:
                size_hint:[0.6,0.6]
                id:"TaskDesc"
                multiline:False
            Button:
                size_hint:[0.4,0.4]
                text:"come_back"
                on_release:
                    app.root.current ="second"
                    root.manager.transition.direction = "left"
            Button:
                size_hint:[0.4,0.4] 
                text:"Create"
                on_release:root.CreateTask(*args)

这是主布局

BoxLayout:
            size_hint:[0.4,0.2]
            id:MainLayout
            orientation:"vertical"
            Button:
                size_hint:[0.3,0.3]
                text:"Add Task"
                on_release:
                    app.root.current="third"
                    root.manager.transition.direction = "right"

也好像制表有错误，没有，就是这样粘贴的

标签： pythonkivy

解决方案

“CreateTask”对象没有属性“root”，因为“self”已经是根。并且不要使用字符串作为 id。

from kivy.app import App
from kivy.lang import Builder
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.label import Label
from kivy.uix.screenmanager import ScreenManager, Screen

class CreateTask(Screen):
    def CreateTask(self, *args):
        bl = BoxLayout(orientation="vertical",spacing=10)
        name=self.ids.TaskName.text
        desc=self.ids.TaskDesc.text
        lbl_name = Label(text=name)
        lbl_desc = Label(text=desc)
        bl.add_widget(lbl_name)
        bl.add_widget(lbl_desc)
        self.ids.MainLayout.add_widget(bl)

sm = ScreenManager()
Builder.load_file("mainscreen.kv")
sm.add_widget(CreateTask())

class MainScreenApp(App):
    def build(self):
        return sm

if __name__ == "__main__":
    MainScreenApp().run()

<CreateTask>
    name:"third"
    AnchorLayout:
        size:root.size
        anchor_x:"center"
        anchor_y:"top"
        BoxLayout:
            orientation:"vertical"
            size_hint:[0.6,0.6]
            Label:
                text:"Input Task Name"
            TextInput:
                size_hint:[0.2,0.2]
                id: TaskName
            TextInput:
                size_hint:[0.6,0.6]
                id: TaskDesc
                multiline:False
            Button:
                size_hint:[0.4,0.4]
                text:"come_back"
                on_release:
                    app.root.current: "second"
                    root.manager.transition.direction: "left"
            Button:
                size_hint:[0.4,0.4]
                text:"Create"
                on_release: root.CreateTask(*args)

    BoxLayout:
        size_hint:[0.4,0.2]
        id:MainLayout
        orientation:"vertical"
        Button:
            size_hint:[0.3,0.3]
            text:"Add Task"
            on_release:
                app.root.current="third"
                root.manager.transition.direction = "right"

截屏

推荐阅读