Creación de Componentes de UI

How to create composables on Android using Jetpack Compose?

Defining the identity of a mobile application is essential to offer a coherent and attractive user experience. To achieve this, a design system is the key tool, allowing to establish color schemes, shapes and typographies that cohere the interface. In this context, the use of the Material Design 3 system becomes an efficient strategy to develop Android applications because of its unbalanced integration with native components.

What is Material Design 3 and how are its colors used?

Material Design 3 is an update to Google's design system that provides a uniform framework for creating attractive and functional interfaces. A fundamental aspect of this system is the use of colors, designed with intentionality for different elements:

• Primary and OnPrimary: define the surface and the text within it, respectively.
• Secondary and OnSecondary: They work similarly for other secondary elements.
• Error and Error Container: Used to represent and handle errors.
• Surface Variables (e.g., Surface, Surface Bright): Used to stand out against backgrounds.

You should explore these colors and how they combine. The purpose and application of each token is explained in detail in the resources, allowing you to differentiate them for correct use.

How to handle typography in Material Design 3?

Typography is a crucial component for conveying messages and establishing visual hierarchies. In Material Design 3, the typographic organization is represented through "tokens", classified from larger to smaller styles:

1. Display Styles: large and eye-catching, with variants such as Display Large, Medium and Small.
2. Headlines: Smaller than Display, suitable for prominent titles.
3. Titles: Indicate sections within the application; series such as Title Large, Medium and Small offer flexibility.
4. Body: For main content, set with Body Large, Medium and Small.
5. Label Styles: Small labels useful in menus or chips, available in Large, Medium and Small sizes.

Each type has a clear purpose, which facilitates their choice and application in different application contexts.

How to configure colors and typography with Material Team Builder?

The Material Team Builder is a tool that facilitates the selection of base colors and typographic fonts, controlling the overall appearance of the application. When selecting a source color, the tool automatically generates color schemes for Light and Dark modes, allowing you to experiment with different perceptions:

• Base color choice: Consider a palette that represents the theme of the app.
• Font selection: The tool offers varied options such as Roboto or Poppins, suiting the needs of the project.

The choices at this stage will determine the final image of the application, allowing you to export the theme to integrate it into Android projects using Jetpack Compose.

How to integrate the design in Jetpack Compose?

Once the visual theme has been defined, the next step is to integrate the elements into Jetpack Compose:

1. Exporting the theme: Material Team Builder allows you to export configurations directly for Jetpack Compose, ensuring that colors and fonts are reflected consistently.
2. Package adaptation: Rename the package and make adjustments to the imported files (colors, themes, fonts) to match the project structures.
3. Handling Google Fonts: Dynamic font integration requires establishing a vendor and verification certificate.

The correct implementation of these steps ensures that the application respects the visual and functional design guidelines set from the beginning.

With these configurations in place, we can do an initial test of the application to verify the appearance and functionality of Light and Dark Mode. By applying a theme, the aesthetic transformation will be evident, improving the user's visual interaction.