setIconDrawable

setIconDrawable is a method name used in various user interface toolkits to assign an icon image to a component that displays an icon. It typically accepts a Drawable object and updates the visual representation of the icon.

In many Android libraries, the signature appears as setIconDrawable(Drawable drawable). Some APIs offer overloads that take a resource id (int) or allow a null argument to clear the current icon. The method may return void or the instance itself to support method chaining. The exact behavior can vary by library or component, but the purpose is to replace the current icon displayed by the control.

Behavior-wise, setIconDrawable replaces the existing icon and usually triggers a redraw of the component. Some implementations apply theming or tinting to the drawable, or handle state changes (such as pressed or disabled) to reflect the appropriate visuals. Depending on the framework, the drawable may be mutable or immutable, and resizing or scaling considerations may apply.

Usage examples commonly appear in custom toolbars, action bars, or icon-bearing controls. For example, a toolbar or custom control might call setIconDrawable to update its leading or action icon with a drawable representing the current state or content. When using vector drawables or themed icons, developers should ensure compatibility with the project’s rendering pipeline and theme.

Notes and alternatives: setIconDrawable is not a universal standard across all UI frameworks; it exists in specific libraries and components. Equivalent or related methods include setImageDrawable for ImageView, or setIcon on menu items. Refer to the documentation of the particular library or component to confirm supported overloads, behavior, and threading requirements.