In Flutter, what is the method to ascertain the dimensions of an image concerning its width and height?

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To ascertain the dimensions of an image in Flutter, you can use the Image widget's image property to set the asset or network image, and then fetch its dimensions using the image.width and image.height properties.

Example:

Image myImage = Image.asset('assets/my_image.png');

print('Image width: ${myImage.image.width}');
print('Image height: ${myImage.image.height}');

Alternatively, you can use the dart:ui library to obtain the dimensions of an image asset without supplying it to an Image widget. This approach allows you to fetch the dimensions synchronously.

Example:

import 'dart:ui' as ui;

void getImageSize() async {
  final ImageStream stream = AssetImage('assets/my_image.png').resolve(ImageConfiguration.empty);
  final ui.Image image = await stream.first;
  print('Image width: ${image.width}');
  print('Image height: ${image.height}');
}