Flutter LimitedBox

LimitedBox is a widget in Flutter that has a single child and ensures that the child stays within given constraints. If the child tries to exceed these constraints, the LimitedBox will limit the size of the child and avoid exceeding the constraints.

When to use LimitedBox

The LimitedBox widget is useful when you want to limit the maximum height and/or width of a child widget. This can be useful in scenarios such as:

• Displaying images with a maximum size (e.g., profile pictures)
• Displaying text with a maximum size (e.g., headlines)
• Displaying buttons with a maximum size (e.g., action buttons)

Usage

To use LimitedBox, simply wrap your child widget with it and provide the maxHeight and/or maxWidth constraints. For example:

LimitedBox(
  maxHeight: 200,
  child: Image.asset('image.png'),
);

In the above example, the LimitedBox ensures that the Image widget does not exceed a maximum height of 200 pixels. If the original image is larger than that, the LimitedBox constrains it to fit within the given height.

Properties

• maxHeight: The maximum height to constrain the child widget to.
• maxWidth: The maximum width to constrain the child widget to.

Both properties default to double.infinity, which means there are no constraints by default.

Conclusion

LimitedBox is a simple yet useful widget in Flutter that ensures your child widgets stay within given constraints. This can be especially useful when working with user-generated content, like images or text, where you want to limit the maximum size to ensure the overall layout remains consistent.