获取kivy中选定复选框的值
2 python python-2.7 kivy kivy-language
测试文件
import sqlite3 as lite
from kivy.uix.screenmanager import Screen
from kivy.app import App
from kivy.lang import Builder
from kivy.core.window import Window
Window.size = (600, 325)
class UserGroup(Screen):
def insert_data(self, arg1,arg2):
print(arg1)
print(arg2)
class FactUserGroup(App):
def build(self):
self.root = Builder.load_file('test.kv')
return self.root
if __name__ == '__main__':
FactUserGroup().run()
测试.kv
<CustomLabel@Label>:
text_size: self.size
valign: "middle"
padding_x: 5
<SingleLineTextInput@TextInput>:
multiline: False
<GreenButton@Button>:
background_color: 1, 1, 1, 1
size_hint_y: None
height: self.parent.height * 0.120
UserGroup
GridLayout:
cols: 2
padding : 30,30
spacing: 20, 20
row_default_height: '30dp'
Label:
text: 'Male'
text_size: self.size
valign: 'middle'
CheckBox:
group: 'check'
id : chk
Label:
text: 'Female'
text_size: self.size
valign: 'middle'
CheckBox:
group: 'check'
CustomLabel:
text: 'age'
text_size: self.size
valign: 'middle'
SingleLineTextInput:
id: age
GreenButton:
text: 'Ok'
on_press: root.insert_data(chk.text,age.text)
GreenButton:
text: 'Cancel'
on_press: app.stop()
如何获取复选框的值？我正在使用 age.text 获取年龄文本框的值，但我不知道复选框的值？
当单击“确定”时，如何获取选定的复选框值并传入 root.insert_data。
您可以通过其active属性获取复选框的选中状态，因此请尝试更改：
GreenButton:
text: 'Ok'
on_press: root.insert_data(chk.active ,age.text)
在这个片段中chk.text被更改为chk.active适合我的。
在https://kivy.org/docs/api-kivy.uix.checkbox.html查看更多关于 kivy 复选框的参考
希望能帮助到你。试一试。
更新：
因此，为了能够获得每个复选框的属性和文本输入，您可以分配ObjectProperties给小部件，并且可以将它们链接到您的test.py文件。
修改后的来源：
测试文件
from kivy.uix.screenmanager import Screen
from kivy.app import App
from kivy.lang import Builder
from kivy.core.window import Window
from kivy.properties import ObjectProperty
Window.size = (600, 325)
class UserGroup(Screen):
male = ObjectProperty(None)
female = ObjectProperty(None)
age = ObjectProperty(None)
def insert_data(self):
if self.male.active:
print('Male')
elif self.female.active:
print('Female')
else:
print('No gender selected')
print(self.age.text)
class FactUserGroup(App):
def build(self):
self.root = Builder.load_file('test.kv')
return self.root
if __name__ == '__main__':
FactUserGroup().run()
在该.py文件中，您可以找到新导入的ObjectProperty. 您还可以看到在 中定义了三个新属性UserGroup以与视图交互，并且 中的修改UserGroup.insert_data很简单。
测试.kv
<CustomLabel@Label>:
text_size: self.size
valign: "middle"
padding_x: 5
<SingleLineTextInput@TextInput>:
multiline: False
<GreenButton@Button>:
background_color: 1, 1, 1, 1
size_hint_y: None
height: self.parent.height * 0.120
UserGroup
male: chk_male
female: chk_female
age: txt_age
GridLayout:
cols: 2
padding : 30,30
spacing: 20, 20
row_default_height: '30dp'
Label:
text: 'Male'
text_size: self.size
valign: 'middle'
CheckBox:
group: 'check'
id : chk_male
Label:
text: 'Female'
text_size: self.size
valign: 'middle'
CheckBox:
group: 'check'
id: chk_female
CustomLabel:
text: 'age'
text_size: self.size
valign: 'middle'
SingleLineTextInput:
id: txt_age
GreenButton:
text: 'Ok'
on_press: root.insert_data()
GreenButton:
text: 'Cancel'
on_press: app.stop()
在.kv文件中，两个复选框的 id 和文本输入分别重命名为chk_male,chk_female和txt_age。
您还可以看到对象属性链接是在该UserGroup部分的开头定义的。
希望它有意义并符合您的要求。
解决方案是使用StringProperty，将文本（男、女）添加到 CheckBox，并使用on_active事件来捕获性别。
测试.py
from kivy.properties import StringProperty
...
def insert_data(self, age):
print("Gender={}".format(self.gender))
print("Age={}".format(age))
测试.kv
CheckBox:
group: 'check'
id : chk
text: "Male"
on_active:
root.gender = self.text
...
CheckBox:
group: 'check'
text: "Female"
on_active:
root.gender = self.text
...
GreenButton:
text: 'Ok'
on_press: root.insert_data(age.text)
例子
测试.py
import sqlite3 as lite
from kivy.uix.screenmanager import Screen
from kivy.app import App
from kivy.lang import Builder
from kivy.core.window import Window
from kivy.properties import StringProperty
Window.size = (600, 325)
class UserGroup(Screen):
gender = StringProperty("")
def insert_data(self, age):
print("Gender={}".format(self.gender))
print("Age={}".format(age))
class FactUserGroup(App):
def build(self):
self.root = Builder.load_file('test.kv')
return self.root
if __name__ == '__main__':
FactUserGroup().run()
测试.kv
#:kivy 1.10.0
<CustomLabel@Label>:
text_size: self.size
valign: "middle"
padding_x: 5
<SingleLineTextInput@TextInput>:
multiline: False
<GreenButton@Button>:
background_color: 1, 1, 1, 1
size_hint_y: None
height: self.parent.height * 0.120
UserGroup
GridLayout:
cols: 2
padding : 30,30
spacing: 20, 20
row_default_height: '30dp'
Label:
text: 'Male'
text_size: self.size
valign: 'middle'
CheckBox:
group: 'check'
id : chk
text: "Male"
on_active:
root.gender = self.text
Label:
text: 'Female'
text_size: self.size
valign: 'middle'
CheckBox:
group: 'check'
text: "Female"
on_active:
root.gender = self.text
CustomLabel:
text: 'age'
text_size: self.size
valign: 'middle'
SingleLineTextInput:
id: age
GreenButton:
text: 'Ok'
on_press: root.insert_data(age.text)
GreenButton:
text: 'Cancel'
on_press: app.stop()
输出
