Python Calculator App for Android using Kivy (
Python Calculator App for Android pydroid using Kivy
Description:
In this video, we demonstrate how to create a simple yet powerful calculator app for Android using Python and the Kivy framework. Kivy is a popular open-source library for developing multi-platform applications with a focus on user interfaces. This tutorial will guide you through the process of building a fully-functional calculator app that can be easily deployed on Android devices.
We will cover the following topics in this tutorial:
Introduction to Kivy and its installation.
Setting up the user interface with Kivy's GridLayout, Buttons, and TextInput widgets.
Implementing basic calculator operations (addition, subtraction, multiplication, and division).
Handling user input and error cases.
Packaging and deploying the calculator app on Android devices using Buildozer or Kivy Launcher.
By the end of this tutorial, you will have a clear understanding of how to use Python and Kivy to create a visually appealing and functional calculator app for Android. Whether you're a beginner or an experienced developer, this video will provide valuable insights and help you expand your skillset in the realm of mobile app development using Python.
Join us in exploring the power of Python and Kivy for Android app development, and don't forget to like, share, and subscribe for more helpful tutorials!
below 👇 code:
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import kivy
from kivy.app import App
from kivy.uix.gridlayout import GridLayout
from kivy.uix.label import Label
from kivy.uix.button import Button
from kivy.uix.textinput import TextInput
from kivy.core.window import Window
kivy.require('2.0.0')
class CalculatorApp(App):
def build(self):
self.title = "Android Calculator"
Window.clearcolor = (1, 1, 1, 1)
layout = GridLayout(cols=4, spacing=5, padding=5)
self.result = TextInput(text='', multiline=False, readonly=True,
halign='right', font_size=32, background_color=(0.8, 0.8, 0.8, 1))
layout.add_widget(self.result)
layout.add_widget(Label(text=''))
layout.add_widget(Label(text=''))
layout.add_widget(Button(text='C', on_press=self.clear, font_size=24, background_color=(1, 0, 0, 1)))
buttons = [
'7', '8', '9', '/',
'4', '5', '6', '*',
'1', '2', '3', '-',
'.', '0', '=', '+'
]
for char in buttons:
if char == "=":
layout.add_widget(Button(text=char, on_press=self.calculate, font_size=24))
else:
layout.add_widget(Button(text=char, on_press=self.add_expression, font_size=24))
return layout
def add_expression(self, instance):
if instance.text in ['+', '-', '*', '/'] and self.result.text and self.result.text[-1] in ['+', '-', '*', '/']:
return
self.result.text += instance.text
def clear(self, instance):
self.result.text = ""
def calculate(self, instance):
try:
self.result.text = str(eval(self.result.text))
except ZeroDivisionError:
self.result.text = "Error"
if _name_ == '__main__':
CalculatorApp().run()
=======================================
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