How to use different layouts in Kivy

by vinitha@openweaver.com Updated: Sep 6, 2023

Solution Kit

Kivy is an open-source Python library. It will enable developers to create cross-platform applications with GUI applications. A Kivy layout refers to organizing UI elements within the app interface.

It provides a way to structure various widgets (such as buttons, labels, and text inputs) on the screen. Make it easier to design and maintain visually appealing user interfaces.

Kivy layouts are essential for creating responsive and user-friendly Android applications. They allow developers to manage the sizing and behavior of UI components. It ensures an intuitive user experience across different devices and screen sizes.

Kivy provides different layouts to choose from, each with its characteristics.

Float Layout: It allows users to position widgets using (x, y) coordinates. The layout positions widgets relative to their size. It can overlap if their positions overlap.
Box Layout: It organizes widgets in a horizontal or vertical sequence. You can place widgets one after another and control the spacing between them.
Grid Layout: It arranges widgets in a grid-like structure. You define the number of rows and columns, and widgets fill the cells accordingly.
Relative Layout: It positions widgets about each other or the layout itself. This is particularly useful for creating UIs with complex arrangements.
Stack Layout: In the Stack Layout, you can stack widgets on top of each other and control how they look.

Using Kivy layouts to create user interfaces involves these general steps:

Import Kivy Modules: Import the necessary Kivy modules in your Python code.
Define Layouts: Choose an appropriate layout type for your app's needs. Instantiate the chosen layout class.
Create Widgets: To make your interface, choose buttons, labels, and text inputs.
Add Widgets to Layout: To add widgets to the layout, use the methods provided by the layout class. Specify the layout rules and positioning as needed.
Configure Interaction: Define how the widgets should respond to user interactions.
Run the App: Start the Kivy application's main loop to display the UI and respond to user actions.

In conclusion, Kivy is an open-source Python library. It facilitates the creation of cross-platform applications with GUI. Its versatile layout mechanisms are at the heart of Kivy's UI design capabilities. It enables developers to organize and position various UI elements effectively.

Fig: Preview of the output that you will get on running this code from your IDE

Code

In this solution we are using kivy library

How to add more than one layout in a single screen in kivymd

PythonLines of Code : 112License : Strong Copyleft (CC BY-SA 4.0)

Dependent Libraries :

from kivy.lang import Builder
from kivymd.app import MDApp
from kivy.core.window import Window

Window.size = (300, 530)

KV = """
<MyImageCard@MDCard>
    source: ''
    caption:''    
    ripple_behavior: True
    orientation: 'vertical'
    size_hint: None, None
    size: "250dp", "180dp"
    elevation: 15
    radius: 15       
    padding: "8dp"
    MDLabel:
        text: root.caption
        theme_text_color: "Secondary"
        adaptive_height: True
    MDSeparator:
        height: "1dp"
    Image:
        allow_stretch: True
        keep_ratio: False
        size_hint_y: 1
        source: root.source
        
<MyTextCard@MDCard>:
    text:""
    orientation: 'vertical'
    size_hint: 1, None
    height: child_label.height
    MDLabel:
        id: child_label
        markup: True
        padding: [15, 1]
        size_hint_y: None
        height: self.texture_size[1] + 2*self.padding[1]
        text:root.text
    
MDScreen:
    image: "C:/Users/HP USER/Downloads/bella_baron.jpg"           
    text:'[size=25][b]Ford[/b][/size][b][i]\\n"Make every detail perfect and limit the number of details to perfect."[/b][/i] \\n– Jack Dorsey'
    MDBoxLayout:
        orientation: 'vertical'
        size_hint: 1, 1
        pos_hint:{"center_x":.5,"center_y":.5}
        ScrollView:
            MDGridLayout:
                cols: 1
                adaptive_height: True
                padding: '10dp', '15dp'
                spacing: '15dp'
                
                MyTextCard:
                    text:root.text
    
                MyTextCard:
                    text:root.text
                                
                MyTextCard:
                    text:root.text
                
                MyTextCard:
                    text:root.text
                
                MyTextCard:
                    text:root.text
                        
                MDBoxLayout:
                    orientation: 'vertical'
                    size_hint: 1, None
                    height: 400                    
                    ScrollView:
                        MDGridLayout:
                            cols: 3                                 
                            adaptive_height: True               
                            adaptive_width: True        
                            spacing: '10dp'
                            padding: ['10dp', '10dp']
                            MyImageCard:
                                source: root.image
                                caption: 'Hello dear'                        
                            MyImageCard:
                                source: root.image
                                caption: 'Lovely'
                            MyImageCard:
                                source: root.image
                                caption: 'See you'
                            MyImageCard:
                                source: root.image
                                caption: 'Later'                        
                            MyImageCard:
                                source: root.image
                                caption: 'Forever'
                            MyImageCard:
                                source: root.image
                                caption: 'Good Bye'

"""


class Example(MDApp):

    def build(self):
        return Builder.load_string(KV)


Example().run()

Instructions

Follow the steps carefully to get the output easily.

Download and Install the PyCharm Community Edition on your computer.
Open the terminal and install the required libraries with the following commands.
Install Kivy - pip install Kivy
Create a new Python file on your IDE.
Copy the snippet using the 'copy' button and paste it into your python file.
Run the current file to generate the output.

I hope you found this useful.

I found this code snippet by searching for ' add more than one layout in a single screen in kivymd ' in Kandi. You can try any such use case!

Environment tested

I tested this solution in the following versions. Be mindful of changes when working with other versions.

PyCharm Community Edition 2023.1
The solution is created in Python 3.11.1 Version
Kivy 2.2.0 Version

Using this solution, we can able to use different layouts in kivy with simple steps. This process also facilities an easy way to use, hassle-free method to create a hands-on working version of code which would help us to use different layouts in kivy.

Dependency library

kivyby kivy

Python

15962

Version:2.2.0

License: Permissive (MIT)

Open source UI framework written in Python, running on Windows, Linux, macOS, Android and iOS

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kivyby kivy

Python 15962 Version:2.2.0 License: Permissive (MIT)

Open source UI framework written in Python, running on Windows, Linux, macOS, Android and iOS

Support

Quality

Security

License

Reuse

You can search for any dependent library on kandi like ' Kivy '.

FAQ:

1. What are the benefits of using a Cross-Platform Python Framework like Kivy?

Developers can use Kivy to make apps that work on different platforms with just one codebase. Here are some of the key advantages:

Code Reusability
Time and Cost Efficiency
Consistent User Experience
Faster Development

2. What programming language does Kivy use to create GUI applications?

Kivy uses the Python programming language to create GUI applications. Python is a widely used programming language known for its simplicity and readability. Kivy has libraries for making GUIs with Python code.

3. How can I add a child widget in my Box Layout using Kivy?

Adding a child widget to a BoxLayout in Kivy is quite straightforward. The BoxLayout positions multiple child widgets either horizontally or vertically. Here's how you can add a child widget to a BoxLayout using Kivy:

Import Kivy Modules
Define BoxLayout
Create Child Widget
Add Child to BoxLayout
Run the App

4. What are some of the more popular GUI Layouts when working with Kivy?

Kivy has many GUI layouts that can help you arrange UI elements in your app. Each layout has its characteristics and use cases. Here are some of the more popular GUI layouts when working with Kivy:

Box Layout
Grid Layout
Relative Layout
Float Layout
Stack Layout

5. How do I use the GridLayout widget for creating complex user interfaces with Kivy?

This guide shows you how to use the GridLayout widget in Kivy. It helps you create complex user interfaces.

Import Kivy Modules
Define Grid Layout
Create Child Widgets
Add Widgets to GridLayout
Customize Spacing and Sizing
Run the App

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