如何解决在猕猴桃中水平对齐按钮
This is how my program looks right now.
如何将我的按钮“登录”始终与 居中 保持 水平 对齐？我曾尝试在Stack Overflow上查找类似内容，但对我没有任何帮助...如果有人可以帮助我，我将非常感激。
这是我的python代码：
from kivy.lang import Builder
from kivy.uix.screenmanager import ScreenManager,Screen
from kivy.core.window import Window
from kivy.uix.gridlayout import GridLayout
import kivy.properties as kyprops
from kivy.uix.widget import Widget
from kivy.uix.image import Image
Builder.load_file("main.kv")
Window.clearcolor = (1,1,1)
# Declare both screens
class LoginScreen(Screen):
#txt_inpt = kyprops.ObjectProperty(None)
#def __init__(self):
pass
class InfoScreen(Screen):
pass
# Create the screen manager
sm = ScreenManager()
sm.add_widget(LoginScreen(name='Login'))
sm.add_widget(InfoScreen(name='Info'))
class TestApp(App):
def build(self):
return sm
if __name__ == '__main__':
TestApp().run()
这是我的.kv代码：
#:import C kivy.utils.get_color_from_hex
<LoginScreen>:
RelativeLayout:
txt_inpt: txt_inpt
canvas:
Color:
rgba: C('#336699')
Line:
width: 2
rectangle: (0,self.height-50,self.width,0)
id: linija
Ellipse:
pos: self.width- 35,self.height-15
size: 7,7.0000000001
angle_start: 0
angle_end: 360
Ellipse:
pos: self.width- 35,self.height-27
size: 7,self.height-39
size: 7,7.0000000001
angle_start: 0
angle_end: 360
TextInput:
id: txt_inpt
password: True
multiline: False
hint_text: 'Username'
hint_text_color: C('#b3ccff')
size_hint_x: 0.9
size_hint_y: None
pos_hint: {"x":0.05,"top":0.8}
background_color: (1,0.2)
on_text_validate: root.manager.current = 'Info'
height: 30
pos: 300,60
TextInput:
id: txt_inpt
password: True
multiline: False
hint_text: 'Password'
hint_text_color: C('#b3ccff')
size_hint_x: 0.9
size_hint_y: None
pos_hint: {"x":0.05,"top":0.7}
background_color: (1,60
BoxLayout:
width: 1
pos: self.parent.pos # important!
orientation: 'vertical'
halign: 'center'
Button:
on_press: root.manager.current = 'Info'
background_color: C('#336699')
pos: self.pos
size: self.size
size: 80,30
size_hint: None,None
## NOTE: pos_hint: {"x":0.45,"top":0.6}
font_name: 'Droid.otf'
text: 'Log in'
<InfoScreen>:
BoxLayout:
Button:
text: 'My settings button'
Button:
text: 'Back to menu'
on_press: root.manager.current = 'Login'
解决方法
您在kv中的行：
pos: self.parent.pos # important!
将BoxLayout放在RelativeLayout的左下角
您可以使用pos_hint和minimum_width将其居中：
BoxLayout:
# width: 1
# pos: self.parent.pos # important!
pos_hint: {'center_x':0.5,'y':0}
size_hint_x: None
width: self.minimum_width
orientation: 'vertical'
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