我有一个简单的应用程序，可在TextInput字段中询问您的姓名和年龄。
单击“保存”按钮时，将打开一个Popup，您可以将TextInput中的姓名和年龄保存在文件中。
题：Popup已经打开时，如何访问名称和年龄？
现在，在打开TextInput之前，我将Popup数据存储在字典中。
此解决方法确实可以工作，但最肯定的解决方案是：
class SaveDialog(Popup):
def redirect(self, path, filename):
RootWidget().saveJson(path, filename)
def cancel(self):
self.dismiss()
class RootWidget(Widget):
data = {}
def show_save(self):
self.data['name'] = self.ids.text_name.text
self.data['age'] = self.ids.text_age.text
SaveDialog().open()
def saveFile(self, path, filename):
with open(path + '/' + filename, 'w') as f:
json.dump(self.data, f)
SaveDialog().cancel()
最佳答案
您可以将您的对象传递给弹出对象。这样，您可以访问弹出对象的所有窗口小部件属性。
这样的例子看起来像这样。
from kivy.uix.popup import Popup
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.button import Button
from kivy.uix.textinput import TextInput
from kivy.app import App
class MyWidget(BoxLayout):
def __init__(self,**kwargs):
super(MyWidget,self).__init__(**kwargs)
self.orientation = "vertical"
self.name_input = TextInput(text='name')
self.add_widget(self.name_input)
self.save_button = Button(text="Save")
self.save_button.bind(on_press=self.save)
self.save_popup = SaveDialog(self) # initiation of the popup, and self gets passed
self.add_widget(self.save_button)
def save(self,*args):
self.save_popup.open()
class SaveDialog(Popup):
def __init__(self,my_widget,**kwargs): # my_widget is now the object where popup was called from.
super(SaveDialog,self).__init__(**kwargs)
self.my_widget = my_widget
self.content = BoxLayout(orientation="horizontal")
self.save_button = Button(text='Save')
self.save_button.bind(on_press=self.save)
self.cancel_button = Button(text='Cancel')
self.cancel_button.bind(on_press=self.cancel)
self.content.add_widget(self.save_button)
self.content.add_widget(self.cancel_button)
def save(self,*args):
print "save %s" % self.my_widget.name_input.text # and you can access all of its attributes
#do some save stuff
self.dismiss()
def cancel(self,*args):
print "cancel"
self.dismiss()
class MyApp(App):
def build(self):
return MyWidget()
MyApp().run()
关于python - Kivy从弹出窗口获取TextInput，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/38548075/