Table of contents
1.
Introduction
2.
Background Template
3.
Frequently Asked Questions
3.1.
Why should we use Kivy?
3.2.
What is a widget in Kivy?
3.3.
Is Kivy suitable for Android?
3.4.
How do we change the background in Python?
3.5.
Why is kivy not popular?
4.
Conclusion
Last Updated: Mar 27, 2024
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Background Template in Kivy

Author Shivani Kumari
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Introduction

Kivy is a Python platform-independent GUI tool. Because it can run on Android, iOS, Linux, and Windows, among other platforms, it is mainly used to construct Android applications, but it may also be used to develop desktop programs.

We first need to install the Kivy library to use the background template. Type the following command to install Kivy.

pip install kivy

 

In this blog, we learn about the Background Template in Kivy. Let us see how to apply the background in our apps using kivy library.

Background Template

A good background makes your App look attractive. To insert background in our App, we have to make a .kv file. Below is the code for setting the background in our App. Let us take a look and try to understand.

We will write the following code in main.py.We will type python main.py in our command prompt to run the python file.

# Program to apply a background template for the App
# Import necessary modules from kivy
from kivy.uix.boxlayout import BoxLayout
from kivy.app import App

# Create a background class that inherits the box layout class
class Background(BoxLayout):
    def __init__(self, **kwargs):
        super().__init__(**kwargs)
    pass
    
# Create an App class with the name of your App
class SampleApp(App):
# Return the Window having the background template.
    def build(self):
        return Background()
# Run app in the main function
if __name__ == '__main__':
    SampleApp().run()
You can also try this code with Online Python Compiler
Run Code

 

We will write the following code in .kv file.

<Background>:
    id: main_win
    orientation: "vertical"
    spacing: 10
    space_x: self.size[0]/3
    canvas.before:
        Color:
            rgba: (1, 1, 1, 1)
        Rectangle:
            source:'back.jfif'
            size: root.width, root.height
            pos: self.pos
    Button:
        text: "Click Me"
        pos_hint :{'center_x':0.2, 'center_y':0.2}
        size_hint: .30, 0
        background_color: (0.06, .36, .4, .675)
        font_size: 40
You can also try this code with Online Python Compiler
Run Code

 

Output

Now, let us move to the FAQs section to clear our doubts regarding the background template in kivy.

Frequently Asked Questions

Why should we use Kivy?

Kivy helps in developing applications that make use of multi-touch and innovative UI. The basic idea behind Kivy is to enable the developer to build an app once and use it across all devices, allowing for quick and easy interaction design and rapid prototyping and making the code reusable and deployable,

What is a widget in Kivy?

A Widget is the building block of Graphical User interfaces in Kivy. It provides a Canvas that can be used to draw on the screen. It receives events and reacts to them.

Is Kivy suitable for Android?

Kivy is an excellent tool for developing Android Apps. The best advantage of using kivy is that it is cross-platform, and the same project can be used to publish apps on iOS, Android, Windows, and OS x. However, it has some performance-related disadvantages(as do most cross-platform tools like unity, cocos, etc.

How do we change the background in Python?

Right-click on the upper-left corner of the Python console window and select the Properties. Pick the tab labeled Colors from the dialog box that has appeared. On it, we can set the screen background and text color.

Why is kivy not popular?

Kivy is not popular because all the android developers prefer to use java. Most of the mobile software is developed using kotlin or android studio, which uses java. It is more portable and has more functionalities than kivy, based on Python.

Conclusion

In this article, we have extensively discussed the background template in Kivy. This article discusses how to set background in our apps using kivy. And at the end of the blog, we have seen some examples to understand the background template better.

After reading about Background Template in Kivy, are you not feeling excited to read/explore more articles on the topic of Kivy? Don't worry; Coding Ninjas has you covered. To learn, see Virtual Keyboard in kivyAnimations in kivy, and Working With Buttons in kivy.

To learn more about DSA, Competitive ProgrammingSystem Design, JavaScript, etc refer to our Guided Path on Coding Ninjas Studio. If you want to put your coding skills to the test, check out the mock test series and enter the contests hosted by Coding Ninjas Studio! However, if you have just begun your learning process and are looking for questions asked by tech giants such as Amazon, Facebook, and Microsoft, among others, you should look at the interview experiences and interview bundle for placement preparations.

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