AssetImageLoader class

A concrete implementation of ImageLoader that loads images from the asset bundle.

The AssetImageLoader class extends the ImageLoader abstract class and implements the loadImage method to retrieve images stored in the application's asset bundle. It utilizes Flutter's rootBundle to access the asset data and return it as an image widget.

Method:

• Future<Widget> loadImage({...}):
  • Loads an image from the asset bundle and returns a widget displaying the image.
  • Parameters:
    • path: A String representing the path of the image asset to load (e.g., 'assets/images/example.png').
    • fit: A BoxFit value that determines how the image should be resized to fit its container.
    • width: A double representing the desired width of the image.
    • height: A double representing the desired height of the image.
    • placeholder: An optional Widget to be displayed while the image is loading. Defaults to null if not provided.
    • errorWidget: An optional Widget to be displayed if the image fails to load. Defaults to null if not provided.
  • Returns: A Future<Widget> that resolves to a widget displaying the loaded image or the placeholder/error widget as applicable.
  • Example:

    Widget imageWidget = await assetImageLoader.loadImage(
      path: 'assets/images/example.png',
      fit: BoxFit.cover,
      width: 200.0,
      height: 100.0,
      placeholder: CircularProgressIndicator(),
      errorWidget: Text('Failed to load image'),
    );
    

Error Handling:

If an error occurs while loading the image (e.g., the asset path is invalid), the method will return the specified errorWidget or an ErrorPlaceholder widget if no error widget is provided.

Inheritance

• Object
• ImageLoader
• AssetImageLoader

Constructors

AssetImageLoader()

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

loadImage({required String path, required BoxFit fit, required double width, required double height, Widget? placeholder, Widget? errorWidget}) → Future<Widget>

Loads an image from the asset bundle and returns a widget displaying the image.

override

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited