onImage property Null safety

ImageListener onImage
final

Callback for getting notified that an image is available.

This callback may fire multiple times (e.g. if the ImageStreamCompleter that drives the notifications fires multiple times). An example of such a case would be an image with multiple frames within it (such as an animated GIF).

For more information on how to interpret the parameters to the callback, see the documentation on ImageListener.

See also:

  • onError, which will be called instead of onImage if an error occurs during loading.

Implementation

final ImageListener onImage;