Use of kivy basic tools (color-changing templates for painting)
from kivy.app import App
from kivy.uix.widget import Widget
from kivy.graphics import Color, Ellipse, Line
from random import random
from kivy.uix.button import Button
class MyWidgetWidget(Widget):
def on_touch_down(self, touch):
color = (random(), random(), random())
with self.canvas:
Color(*color)
touch.ud['Line'] = Line(points=(touch.x, touch.y), width=5)
def on_touch_move(self, touch):
touch.ud['Line'].points = touch.ud['Line'].points + [touch.x, touch.y]
class MyPaintApp(App):
def build(self):
parent = Widget()
self.painter = MyWidgetWidget()
clearbtn = Button(text="Clear")
clearbtn.bind(on_release=self.clear_canvas)
parent.add_widget(self.painter)
parent.add_widget(clearbtn)
return parent
def clear_canvas(self, obj):
self.painter.canvas.clear()
if __name__ == "__main__":
MyPaintApp().run()
How to operate:
1. Put the py file into the shared folder (VirtuaIDisk)
2. Enter the VM simulator
3. Enter the /media/sf_VirtuaIDisk/ folder and copy main.py
4. Put main.py into /home/kivydev/kivy/accordion/
5. Right-click on the current folder (/home/kivydev/kivy/accordion/) to enter Open Terminal Here
6. Modify the buildozer.spec file and the default is Android_apk
(str) Title of your application
title = My Application
(str) Package name
package.name = myapp
(str) Package domain (needed for android/ios packaging)
package.domain = org.test
(str) Source code where the main.py live
source.dir = .
If there is no buildozer.spec file in the current folder, execute buildozer init
7. After completing the above operations, execute: gedit buildozer.spec
8. After completing step 7, execute: buildozer android_new debug
Environment and virtual machines
Link: https://pan.baidu.com/s/1-HZ-jLtLbPjov3QCu34C6A
Extraction code: i3kz
