Kivy弹出Filechooser传递变量(选择) [英] Kivy popup Filechooser pass variable (selection)

问题描述

我想将选择变量从load_file_popup filechooser传递给GUI.当我选择文件后按加载"按钮时，显示错误

i want to pass selection variable from load_file_popup filechooser to GUI. when i press load button after selecting a file it gives error

TypeError:"NoneType"对象不可调用

TypeError: 'NoneType' object is not callable

这是我的代码(简体)

class GUI(BoxLayout):

    file_path = StringProperty("Currently No File")


    def __init__(self, **kwargs):
        super(GUI, self).__init__(**kwargs)
        self.load_file_popup = load_file_popup()



    def load(self, selection):
        self.file_path = str(selection[0])
        self.dismiss()


class load_file_popup(Popup):

    load = ObjectProperty()

这是kv

<load_file_popup>:
    title: "Select File"
    size_hint: .9, .9
    SMSBoxLayout:
        orientation: "vertical"
        FileChooser:
            id: filechooser   
            FileChooserIconLayout


        SMSBoxLayout:
            size_hint: (1, 0.1)
            pos_hint: {'center_x': .5, 'center_y': .5}
            SMSButton:
                text: "Cancel"
                on_release: root.dismiss()
            SMSButton:
                text: "Load"
                on_release: root.load(filechooser.selection)
                id: ldbtn
                disabled: True if filechooser.selection==[] else False

推荐答案

我想出了我的问题的答案，我错过了一个论点.

I have figured out answer of my problem, i was missing an argument.

def __init__(self, **kwargs):
    super(GUI, self).__init__(**kwargs)
    self.load_file_popup = load_file_popup(load=self.load)

def load(self, selection):
    self.file_path = str(selection[0])
    self.load_file_popup.dismiss()

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