Here’s a detailed breakdown of the steps to create a mobile app using

Python and Kivy, along with instructions on how to upload it to APKPure.

Step 1: Set Up the Environment

1. Install Python: Make sure you have Python installed on your system. You
can download it from python.org.

2. Install Kivy: Open your terminal (Command Prompt, PowerShell, or

pip install kivy

3. Install OpenCV and NumPy: You also need to install OpenCV and NumPy for
image processing:

pip install opencv-python numpy

Step 2: Create the App Structure

1. Create a New Directory: Make a new directory for your app:

mkdir tomato_clicker

cd tomato_clicker
2. Create Required Files: Inside the tomato_clicker directory, create the
following files:

main.py

buildozer.spec

requirements.txt

Step 3: Write the App Code

1. Edit main.py: Open main.py in a text editor and add the following code:

import kivy

from kivy.app import App

from kivy.uix.widget import Widget

from kivy.graphics import Color, Rectangle

from kivy.core.window import Window

from kivy.clock import Clock

import cv2

import numpy as np
class TomatoClicker(Widget):

def __init__(self, **kwargs):

super(TomatoClicker, self).__init__(**kwargs)

self.capture = cv2.VideoCapture(0)

Clock.schedule_interval(self.update, 1.0 / 60.0)

def update(self, dt):

ret, frame = self.capture.read()

if ret:

# Convert the frame to HSV

hsv = cv2.cvtColor(frame, cv2.COLOR_BGR2HSV)

# Define the range of red color

lower_red = np.array([0, 100, 100])

upper_red = np.array([10, 255, 255])

# Threshold the HSV image to get only red colors

mask = cv2.inRange(hsv, lower_red, upper_red)

# Apply morphological operations to remove noise

kernel = np.ones((5, 5), np.uint8)

mask = cv2.erode(mask, kernel, iterations=1)

mask = cv2.dilate(mask, kernel, iterations=1)

# Find contours of the red objects

contours, _ = cv2.findContours(mask, cv2.RETR_EXTERNAL,

for contour in contours:

# Calculate the area of the contour

area = cv2.contourArea(contour)

# Ignore small contours

# Calculate the center of the contour

M = cv2.moments(contour)

cx = int(M['m10'] / M['m00'])

cy = int(M['m01'] / M['m00'])

# Draw a rectangle around the contour

cv2.rectangle(frame, (cx - 20, cy - 20), (cx + 20, cy + 20), (0,

# Simulate a click on the contour

Window.touch_down(cx, cy)

Window.touch_up(cx, cy)

# Display the resulting frame

cv2.imshow('frame', frame)

class TomatoClickerApp(App):

def build(self):

return TomatoClicker()

if __name__ == '__main__':

TomatoClickerApp().run()

2. Edit buildozer.spec: Open buildozer.spec and add the following

[app]

title = Tomato Clicker

package.domain = org.test

source.include_exts = py,png,jpg,kv,atlas

source.exclude_exts = spec

source.exclude_dirs = tests, bin

source.exclude_patterns = license,images/*/*.jpg

icon.filename = %(source.dir)s/data/icon.png

orientation = all

services = android.permission.INTERNET

android.sdk = 24

android.ndk = 19c

android.api = 24

android.minapi = 24

android.version = 1

android.version_code = 1

android.permissions = INTERNET

android.requirements = opencv-python, numpy

3. Create requirements.txt: In the requirements.txt, you can list the libraries

opencv-python

numpy
Step 4: Build the App

1. Install Buildozer: If you haven't already, install Buildozer. You may need to
install dependencies depending on your operating system. For Ubuntu, you
can run:

sudo apt install -y python3-pip python3-setuptools git

pip install buildozer

2. Initialize Buildozer: Inside your app directory, run:

buildozer init

3. Build the App: Run the following command to build the app:

buildozer -v android debug

This process may take some time as it compiles the app. If everything is set
up correctly, you will find the APK in the bin directory once the build is
complete.

Step 5: Run the App

buildozer android deploy run

Step 6: Upload to APKPure

1. Create an APKPure Account: Go to APKPure and create an account if you

2. Prepare the APK: Make sure your APK file (found in bin/) is ready for
upload. It's usually named something like Tomato_Clicker-1.apk.

3. Upload the APK:

Log into your APKPure account.

Click on "Upload APK."

Follow the instructions to upload your APK file. You will need to provide
details such as the app title, description, screenshots, and any other required
information.

Submit the app for review.

Additional Tips

Ensure your app complies with APKPure's guidelines.

Test your app thoroughly before uploading.

Keep your libraries up-to-date to avoid compatibility issues.

With these steps, you should be able to create your app using Kivy and
successfully upload it to APKPure. If you have any questions or need further
clarification on any step, feel free to ask!