How to run Python code in Android App?

In this video it shows the steps to run a python code in Android App’s code. It calls the python script from the Java code. It uses chaquopy plugin, which is Python SDK for Android. Details are available at: https://chaquo.com/chaquopy/

The steps for setting the Gradle is taken from this page: https://chaquo.com/chaquopy/doc/current/android.html

I hope you like this video. For any questions, suggestions or appreciation please contact us at: https://programmerworld.co/contact/ or email at: programmerworld1990@gmail.com

Complete source code and other details:

Android Java code:

package com.programmerworld.pythininandroidapp;

import android.os.Bundle;
import android.view.View;
import android.widget.TextView;

import androidx.activity.EdgeToEdge;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.graphics.Insets;
import androidx.core.view.ViewCompat;
import androidx.core.view.WindowInsetsCompat;

import com.chaquo.python.PyObject;
import com.chaquo.python.Python;
import com.chaquo.python.android.AndroidPlatform;

public class MainActivity extends AppCompatActivity {

    private TextView textViewOutput;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        EdgeToEdge.enable(this);
        setContentView(R.layout.activity_main);
        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main), (v, insets) -> {
            Insets systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars());
            v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom);

            textViewOutput = findViewById(R.id.textViewOutput);
            Python.start(new AndroidPlatform(getApplicationContext()));

            return insets;
        });
    }

    public void buttonPythonRun(View view){
        Python python = Python.getInstance();
        PyObject pyObjectResult = python.getModule("add_numbers")
                .callAttr("add_numbers", 10, 25);
        textViewOutput.setText(pyObjectResult.toString());
    }
}

Gradle Files:

Project Level:

// Top-level build file where you can add configuration options common to all sub-projects/modules.
plugins {
    alias(libs.plugins.android.application) apply false
    id("com.chaquo.python") version "15.0.1" apply false
}

App Level:

plugins {
    alias(libs.plugins.android.application)
    id("com.chaquo.python")
}

android {
    namespace = "com.programmerworld.pythininandroidapp"
    compileSdk = 34

    defaultConfig {
        applicationId = "com.programmerworld.pythininandroidapp"
        minSdk = 33
        targetSdk = 34
        versionCode = 1
        versionName = "1.0"

        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"

        ndk {
            // On Apple silicon, you can omit x86_64.
            abiFilters += listOf("arm64-v8a", "x86_64")
        }

    }

    buildTypes {
        release {
            isMinifyEnabled = false
            proguardFiles(
                getDefaultProguardFile("proguard-android-optimize.txt"),
                "proguard-rules.pro"
            )
        }
    }
    compileOptions {
        sourceCompatibility = JavaVersion.VERSION_1_8
        targetCompatibility = JavaVersion.VERSION_1_8
    }

    flavorDimensions += "pyVersion"
    productFlavors {
        create("py310") { dimension = "pyVersion" }
        create("py311") { dimension = "pyVersion" }
    }
}

chaquopy {
    productFlavors {
        getByName("py310") { version = "3.10" }
        getByName("py311") { version = "3.11" }
    }
}


dependencies {

    implementation(libs.appcompat)
    implementation(libs.material)
    implementation(libs.activity)
    implementation(libs.constraintlayout)
    testImplementation(libs.junit)
    androidTestImplementation(libs.ext.junit)
    androidTestImplementation(libs.espresso.core)
}

Python Sample code:

def add_numbers(x, y):
    return x + y

Layout/ XML file:

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <TextView
        android:id="@+id/textViewOutput"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Hello World!"
        android:textSize="34sp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.291" />

    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="80dp"
        android:onClick="buttonPythonRun"
        android:text="Python Execution"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

Screenshot:

Complete project folder can be accessed at the following link on payment of USD 9:

https://drive.google.com/file/d/1YN6QmeVcl9XLlj-JXo0_rkfYjWf5Z01i/view?usp=drive_link

Learn how to run Python script in Android App. It shows the steps to integrate the Python code in the Android Java code in Android Studio IDE.

Thank You!!!