Question

如何清除kivy Filechooser的只读列表属性选择，或者有什么解决方法？事实是，即使我返回Filechooser窗口，文件也保持选中状态，这确实很烦人。

Answer 1

即使 kivy filechooser 的 selection 是只读的，您只需将选择值设置为 []

即可清除选择

代码示例：

# import
from kivy.app import App
from kivy.lang import Builder
from kivy.uix.screenmanager import Screen, ScreenManager


class SM(ScreenManager):
    pass


class Screen1(Screen):
    def selected(self, filename):
        # displaying seleted file name as a label
        self.ids.lb.text = str(filename)


class Screen2(Screen):
    def deselect_action(self):
        # access screen1
        s1 = self.manager.get_screen('first')
        # resetting file selection
        s1.ids.select_file.selection = []

# kivy file
kv = Builder.load_string("""
SM:
    Screen1:
    Screen2:

<Screen1>:
    name: 'first'

    BoxLayout:
        orientation: 'vertical'
    
        FileChooserIconView:
            id: select_file
            on_selection: root.selected(select_file.selection)
        Label:
            id: lb
            text: 'default'
        Button:
            text: 'go to second screen'
            on_press: 
                app.root.current = 'second'


<Screen2>:
    name: 'second'

    Button:
        text: 'go back'
        on_press:
            app.root.current = "first"
            root.deselect_action()
""")



class filechoosing(App):
    def build(self):
        return kv

filechoosing().run()

在这里您可以看到，标签采用所选文件的值。返回 Filechooser 窗口屏幕时，没有选择。

如何取消选择在kivy filechooser列表视图中选择的多个文件

1 个答案: