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Let’s make an app! 7 steps to create an Android application with Python

Python has a very easy-to-understand grammar compared to C language and Java, and it is characterized by being easy for beginners to learn because it is a simple language.

Also, in recent years, it has become a programming language that is attracting attention because it is used for the development of artificial intelligence and deep learning.

4 benefits of using Python

What are the advantages of Python?

 

Python’s code is simple, making it a great programming language for beginners. Python also has many other advantages.

 

Here are four advantages of using Python. Please use it as a reference.

Advantage 1 of using Python: less code to write

Python has the advantage that the amount of code to be written is small and coding is possible.

 

In general, programming languages ​​require a lot of code to operate as a program, but Python can be written in short code and there are few words to remember.

 

Python is a programming language that has a philosophy of simplicity, allowing you to do a lot of things in one line.

Advantage of using Python 2: Easy to read and write

Python has the advantage of being easy to read and write due to its simple syntax.

 

As mentioned above, Python is very easy to code because the code is simple and short, and it is easy to understand what the content is even if someone other than the engineer who did the coding reads it. It has the advantage of being less likely to occur.

Advantage of using Python 3: Good compatibility with C language

Python has the advantage of being compatible with the C language.

 

Python has good compatibility with C language and C-based languages, and it is possible to call C language processing from Python and vice versa.

 

Therefore, Python can be used in combination with embedded applications where C and C++ are often used.

Advantage of using Python 4: Very convenient when creating applications

Python has the advantage that it can be used for application development.

 

Web application development is probably the most common use of Python. Python’s code is easier to read than PHP, which is specialized for web application development, and there are plenty of frameworks that are convenient for application development.

 

Also, Python can be used to develop desktop applications, so it can be said that it is a convenient language for application development.

6 things you can do with Python

Many things are possible with Python.

As mentioned earlier, Python is a very useful programming language with many advantages. In addition, it is used in various fields because there are many things that can be developed and it has high versatility.

Here are 6 things you can do with Python, so please refer to them.

What you can do with Python 1: Developing apps

Python is a programming language for web application development.

As I introduced earlier, Python is a language that is easy to develop applications because it has various frameworks that can be used for developing web applications.

Famous applications developed in Python so far include “YouTube” and “Instagram”.

What you can do with Python 2: Game development

Python is a programming language for game development.

Python can be used to develop games using code, but you can develop more full-fledged games by using Python game libraries or by utilizing game engines that can be used with Python.

In addition, there are many genres of games that can be created, such as shooting, role-playing, and simulation.

What you can do with Python 3: Develop embedded applications

Python is a programming language for developing embedded applications.

As mentioned above, Python has good compatibility with C language, and it is possible to call Python from C language processing.

 

In addition, C language and C++ are often used in embedded system development, so Python is often used in combination with C language to develop embedded applications.

What you can do with Python 4: Developing desktop apps

Python is a programming language for developing desktop applications.

You may not have much of an image of it compared to web applications and smartphone applications, but Python is also used in the development of e-mail applications that are used on the desktop.

Java and C languages ​​are often used in desktop application development, but with Python, it is possible to develop faster by using libraries.

What you can do with Python 5: Machine learning development

Python is a programming language capable of machine learning.

Python has a wide variety of libraries specialized for machine learning, so it has become a standard programming language that is also used for artificial intelligence development.

In recent years, Python has become more popular than before because it can be developed using artificial intelligence and machine learning.

What you can do with Python 6: Creating a template for a web application

Python is a programming language that can create templates for web applications.

Python has a wealth of web frameworks that make it easy to develop web applications, so you can easily create a template for a web application by using them.

 

7 steps to create an Android application with Python

I will show you how to create an android application in python.

 

Python is a versatile programming language, but you can’t create Android apps with it. However, by creating an APK file, which is an Android executable file, you can run the application on Android.

 

Here, I will introduce 7 steps to create an Android application in Python, so please use it as a reference for creating an application.

Creating an Android application with Python Step 1: Install Python

When creating an Android application with Python, let’s install Python with the port command.

Since an error occurs when creating the APK file, set the version to “Python3.6.7”.

Also, let’s pass to “/opt/local/bin”, “/opt/local/Library/Frameworks/Python.framework/Versions/3.6/bin”.

Creating an Android application with Python Step 2: Install Kivy

Install Kivy to create Android apps in Python.

Install all the tools that depend on Kivy. At this time, there are cython versions that do not match depending on the Kivy version, so be careful.

 

After installing Kivy, write a program to display “Hello World” and check its operation.

Building an Android app with Python Step 3: Install Buildozer

If you want to create an Android application with Python, let’s install Buildozer itself.

Install Buildozer and upgrade to the development version. Once “Buildozer-0.38.dev0” is installed, continue to install tools to make Buildozer work properly.

CrystaX NDK

Install CrystaX NDK to run Buildozer

When you start Builderozer, it will use Google’s NDK by default, but you will get an error if you leave it as it is. Therefore, let’s install CrystaX NDK (crystax-ndk-10.3.2-darwin-x86_64.tar.xz).

Java Development Kit

Install Java Development Kit.

The latest version of the Java Development Kit is not supported by Buildoze, so you need to install version 8.

 

To install 8, the active version will be displayed after installation, so change “OpenJDK 8” or “Java SE 8” to active.

Build an Android app with Python Step 4: Launch Buildoze

When creating an Android application with Python, start Buildozer first.

Buildozer configuration files let’s create a working directory and place main.py and other related program files.

Build an Android app with Python Step 5: Build an APK file with Buildoze

When creating an Android application with Python, let’s create an APK file with Buildozer.

Create “myapp-0.1-debug.apk” in the bin directory of your working directory. However, when starting for the first time, there are cases where an error occurs due to lack of tools, so avoid it by installing the sh library or curl.

Creating an Android app with Python Step 6: Move the AKP file to Android

If you build an Android app with Python, let’s move the APK file to Android.

Since it is necessary to put Android into developer mode, press the build number several times in “Settings”, “System”, “About phone” to enter developer mode.

 

In addition, turn on “System” in “Device Information”, turn on “Developer Options”, turn on USB debugging, connect to PC with USB cable and transfer files.

Creating an Android application with Python Step 7: Checking the application launch on the Android device

When creating an Android application with Python, let’s check the startup of the application on the Android terminal at the end.

After the created application has been transferred, let’s check the startup of the application on the Android side. If it can be started successfully, the work is completed.

4 representative applications using Python

Here are some popular applications created using Python.

As introduced so far, Python can be used to develop various applications such as desktop applications and smartphone applications. It is also used to create world-famous applications, such as “Evernote”, “YouTube”, “Instagram”, and “DropBox”.

Finally, I will introduce a representative application using Python.

Typical application using Python 1: Evernote

Evernote is a web service that allows you to leave information as if you were taking notes on the web.

This service is also used in the business scene, and can record not only text but also images and videos. Plans include a free basic plan, a monthly premium of 600 yen, and a corporate plan of 1,100 yen per month. (As of November 2020)

Python is very easy to read and write, so it is also used in the development of Evernote.

Typical application using Python 2: YouTube

YouTube is one of the world’s leading video sharing services provided by Google LLC.

It is a free video sharing service on the Internet. It was originally founded by another company, but was acquired by Google in 2006 and became what it is today.

Python is also used as a development language for YouTube and is mainly used for server-side processing.

Typical app using Python 3: Instagram

Instagram is a free photo sharing service provided by Facebook.

One of the most popular SNS in recent years, it mainly posts photos and videos. There is also a smartphone app as well as a PC app.

Instagram uses AWS for its cloud servers and is developed in Python. Django is used as the framework, and it is also possible to scale out.

Typical application using Python 4: DropBox

Dropbox is an online storage service provided by Dropbox, Inc.

Dropbox is equipped with various functions such as file sharing and generation management, so you can centrally manage your work and results. Therefore, it is also used in business as a workspace.

Dropbox is all developed in Python, and the total amount of code for the server and client is 937,707 lines.

Let’s make an Android application with Python!

Python is a versatile language that can be used to develop various applications such as desktop applications, embedded applications, and Android applications.

By all means, why not try developing an application using Python, which can be written in simple code, by referring to the advantages of using Python, what you can do with Python, and how to create an Android application with Python, which was introduced in this article. .

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