python - 在TextInput中单击鼠标时光标消失(不闪烁)-Python Kivy

Question

我正在使用带树莓派的python和Kivy库构建一个小型应用程序。

GUI在浮动布局中包含4个文本输入和3个按钮。
问题是，当我单击文本输入光标时，该光标显示并且立即消失。
仅在不释放鼠标单击的情况下，才能介绍文本。

.kv文件：

<AddStuffMenu>:
FloatLayout:
    canvas.before:
        Color:
            rgba: 1, 1, 1, 1
        Rectangle:
            pos: self.pos
            size: self.size
    Button:
        text: "Info"
        pos_hint: {'center_x': 0.5, 'center_y': .8}
        size_hint: .5, .1
        font_size: self.height * 0.5
        background_color:0,0,0,0
        color: 0,0,1,1
        enabled : False
    TextInput:
        size_hint: .2, None
        height:30
        text:''
        pos_hint: {'center_x': 0.5, 'center_y': .7}
        multiline: False
        hint_text : "code"
        id: code
    TextInput:
        size_hint: .2, None
        height:30
        text:''
        pos_hint: {'center_x': .5, 'center_y': .6}
        multiline: False
        hint_text : "product"
        id: product
    TextInput:
        size_hint: .2, None
        height:30
        text:''
        pos_hint: {'center_x': .5, 'center_y': .5}
        multiline: False
        hint_text : "amount"
        id: amount
    TextInput:
        size_hint: .2, None
        height:30
        text:''
        pos_hint: {'center_x': .5, 'center_y': .4}
        multiline: False
        hint_text : "price"
        id: price
    Button:
        text: "Scan"
        pos_hint: {'center_x': .2, 'center_y': .2}
        size_hint: .15, .1
        font_size: self.height * 0.5
        background_color:1, 0, 0, 1
        on_press: root.scan()
    Button:
        text: "Add"
        pos_hint: {'center_x': .5, 'center_y': .2}
        size_hint: .15, .1
        font_size: self.height * 0.5
        background_color: 1, 0, 0, 1
        on_press: root.add()
    Button:
        text: "Back"
        pos_hint: {'center_x': .8, 'center_y': .2}
        size_hint: .15, .1
        font_size: self.height * 0.5
        background_color: 1, 0, 0, 1
        on_press: root.exitScope()

.py文件

class AddStuffMenu(Screen):

def __init__(self,**kwargs):
    super (AddStuffMenu,self).__init__(**kwargs)

def exitScope(self,*args):
    self.manager.current = 'screenTableData'

def scan(self,*args):
    os.system('python /home/pi/barcode.py')
    if(os.path.getsize('/home/pi/barcode.txt') > 0):
        code = open('/home/pi/barcode.txt', 'r').read()
        result = getLineByUPC(code)
        if result is not None:
            self.ids.codeInput.text = str(result[0])
            self.ids.produsInput.text = str(result[1])
        else:
            popup = Popup(title='INFO', content=Label(text="Produc doesn't exist"), size_hint=(None, None), size=(500, 300), font_size='23sp', valign='justify', haligh='top')
            popup.open()
            self.ids.code.text = code
    else:
        popup = Popup(title='INFO', content=Label(text="Try again"), size_hint=(None, None), size=(500, 300), font_size='23sp', valign='justify', haligh='top')
        popup.open()


def add(self,*args):
    print("AddStuffMenu - add")
    print(self.ids.code.text)
    print(self.ids.product.text)
    print(self.ids.amount.text)
    print(self.ids.price.text)

有什么建议吗？

Answer 1

由于您尚未发布任何代码，很难分辨...

我猜你有一个由onbuttonclick或类似的东西定义的参数。您可能需要包括onbuttonrelease参数。