"Creating UI States and Basic Concepts in Android Development"


Hatched by naoya

Feb 25, 2024

3 min read


"Creating UI States and Basic Concepts in Android Development"


In the world of Android development, creating UI states and understanding the basic concepts is crucial. This article will explore the concepts of UI state generation and Jetpack Compose, along with providing actionable advice for developers.

UI State Generation:

UI state generation involves applying business logic and UI logic to the source of state changes, resulting in the creation of UI states in response to user events. This type of state generation is essential for creating dynamic and interactive user interfaces.

Jetpack Compose Basics:

Jetpack Compose introduces a new way of building user interfaces in Android development. One of its fundamental principles is "state hoisting," which refers to the process of moving states to a common ancestor that can be read or modified by multiple functions. By doing so, UI elements are not hidden but simply not added to the UI tree generated by Compose.

State Hoisting:

State hoisting allows access to states in a common ancestor, which are then passed as arguments to other functions and executed when events occur. This approach ensures efficient rendering of UI elements by only displaying the items that are visible on the screen, making it ideal for handling large lists using functions like LazyColumn.

Remember Function:

In Compose, the remember function plays a crucial role. It ensures that a composable retains its state only during its composition. This allows developers to efficiently manage stateful components and minimize unnecessary recomposition.


Animations created using the animate*AsState functions are interruptible. This means that if the target value changes in the middle of an animation, the animate*AsState function will re-run the animation and point to the new value. This flexibility allows for smooth transitions and dynamic UI effects.


MaterialTheme is a composable function in Jetpack Compose that reflects the principles of the Material Design specification. It provides three properties - colorScheme, typography, and shapes - that developers can access to set the style configurations based on the Material Design guidelines. If developers want to use a slightly different color or font style from the pre-defined ones, they can use the copy function to modify the existing styles.

Actionable Advice:

  • 1. Embrace state hoisting: By moving states to a common ancestor, you can create a more maintainable and scalable codebase. This practice helps in managing states efficiently and reduces unnecessary complexity.
  • 2. Utilize the remember function wisely: Understanding the scope and lifecycle of the remember function is crucial for optimizing state management. Use it when necessary and avoid excessive use to prevent unnecessary recomposition.
  • 3. Explore MaterialTheme customization: Experiment with the properties provided by MaterialTheme to create visually appealing and consistent UI designs. Don't hesitate to modify existing styles using the copy function to suit your specific requirements.


Creating UI states and understanding the concepts of Jetpack Compose are vital for Android developers. By applying the principles of state generation, state hoisting, and utilizing features like the remember function and MaterialTheme customization, developers can build dynamic and visually appealing user interfaces. Remember to embrace these concepts and use the actionable advice provided to enhance your Android development skills.

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