在kivy中打开MDCard中的matplotlib
在kivy中打开MDCard中的matplotlib
提问于 2022-10-03 04:59:42
我最近开始使用Kivy，并且一直在为其专用的MDCard中的打开matplotlib图而挣扎。所有可用的代码都只运行App类中的matplotlib图类，但是我希望从我输入的第二个屏幕访问它，然后按下用于它的MDCard。在这里，当我按下按钮时，什么也没有显示出来。这是我的密码。请让我知道我应该做什么：
project.py：
from kivymd.app import MDApp
from kivy.lang import Builder
from kivy.core.window import Window
from kivy.uix.screenmanager import Screen, ScreenManager
from kivymd.uix.card import MDCard
from kivymd.uix.boxlayout import MDBoxLayout
import matplotlib.pyplot as plt
import numpy as np
from kivy.garden.matplotlib.backend_kivyagg import FigureCanvasKivyAgg
import webbrowser
Window.clearcolor = (1, 1, 1, 1)
Window.size = (360, 600)
class ScreenOne(Screen):
pass
class ScreenTwo(Screen):
pass
x = [1,2,3,4,5]
y = [5, 12, 6, 9, 15]
signal_x = np.array(x)
signal_y = np.array(y)
plt.plot(signal_x,signal_y)
plt.xlabel("X-Axis")
plt.ylabel("Y-Axis")
plt.grid(True, color='lightgray')
class ScreenThree(Screen):
def graph(self):
app = MDApp.get_running_app()
box = MDBoxLayout()
box.add_widget(FigureCanvasKivyAgg(plt.gcf()))
return box
sm = ScreenManager()
sm.add_widget(ScreenOne(name='screen1'))
sm.add_widget(ScreenTwo(name='screen2'))
sm.add_widget(ScreenThree(name='screen3'))
class KivyApp(MDApp):
def build(self):
self.theme_cls.primary_palette = "Cyan"
self.theme_cls.primary_hue = "A700"
self.theme_cls.theme_style = "Light"
return Builder.load_file('project.kv')
def url_Function(self):
webbrowser.open('http://www.google.com')
KivyApp().run()project.kv：
ScreenManager:
ScreenOne:
ScreenTwo:
ScreenThree:
<ScreenOne>:
name: 'screen1'
MDFillRoundFlatButton:
text: 'Get Started'
pos_hint: {'center_x':0.5,'center_y':0.4}
on_press: root.manager.current = 'screen2'
<ScreenTwo>:
name: 'screen2'
ScrollView:
size: self.size
GridLayout:
size_hint_y: None
height: self.minimum_height
width: self.minimum_width
cols: 1
spacing: "20dp"
padding: "20dp"
MDCard:
orientation: "vertical"
padding: "8dp"
size_hint: 1, None
height: "210dp"
elevation: 5
border_radius: 10
radius: [15]
ripple_behavior: True
on_press: app.url_Function()
MDLabel:
text: 'Link'
bold: True
color: (64/255, 75/255, 122/255, 1)
font_size: 20
halign: 'center'
MDCard:
orientation: "vertical"
padding: "8dp"
size_hint: 1, None
height: "210dp"
elevation: 5
border_radius: 10
radius: [15]
ripple_behavior: True
on_press: root.manager.current = 'screen3'
MDLabel:
text: 'Plot'
bold: True
color: (64/255, 75/255, 122/255, 1)
font_size: 20
halign: 'center'
valign: 'middle'
<ScreenThree>
name: 'screen3'
id: _box
Button:
text: 'Do it'
on_release: _box.graph()回答 1
Stack Overflow用户
发布于 2022-10-05 07:51:42
您缺少了一个框，它将包含FigureCanvasKivyAgg对象。
project.py
class ScreenThree(Screen):
def graph(self):
self.ids.box_plot.add_widget(FigureCanvasKivyAgg(plt.gcf()))
plt.close()project.kv
<ScreenThree>:
name: 'screen3'
id: _box
Button:
text: 'Do it'
on_release: _box.graph()
MDBoxLayout:
id: box_plot这将显示在你点击第三个屏幕的“做它”-button后的情节。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/73931253
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