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Kivy Cookbook

Kivy Cookbook

By : Hugo Solis, Solis
2.5 (2)
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Kivy Cookbook

Kivy Cookbook

2.5 (2)
By: Hugo Solis, Solis

Overview of this book

Kivy is an open-source Python library for rapid development of applications that make use of innovative user interfaces, such as multi-touch apps. It is a promising Python framework to develop UI and UX apps in a cross-platform environment, under the Python philosophy. Kivy Cookbook is a practical book that will guide you through the Kivy framework to develop apps and get your apps ready for distribution in App Store and Android devices. You will start off with installing Kivy and building your interfaces. You will learn how to work the accelerometer and create custom events. Then, you will understand how to use the basics, buttons, labels and text inputs and manipulate the widget tree. Next, you will be able to work with manipulating instructions, create an atlas and layouts. Moving on, you will learn packing for Windows and packing for iOS, and use TestDrive. By the end of the book, you will have learnt in detail the relevant features and tools in Kivy and how to create portable packages to distribute your apps in the most used platforms.
Table of Contents (11 chapters)
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10
Index

Resizing the screen into Android

Android is a completely diverse forest of devices. So, it is very useful to emulate the different screens available. In this recipe, we are going to run our app to emulate different device screens.

Getting ready

We will use the same code that we used in our previous recipe. Also, it is important to read it, if you want to know how to run your code on a real Android device.

How to do it…

Now, we have two files: the main.py file, the Python file with the operational part of the app, and the e1.kv file, the KV file with the graphical aspects of the app. If we want to improve our app design, we can run it like this:

$ python main.py -m screen:nexus7.2

Otherwise, if we want to see it as on a phone, we use:

$ python main.py -m screen:s3,portrait

How it works…

We used the Kivy module screen that permits us to simulate the screen of the most common Android devices. If we run the app without the module, we will see an incorrect visualization of the app on...

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