ImageStreamListener _getListener(ImageLoadingBuilder loadingBuilder = null)
{
loadingBuilder = loadingBuilder ?? widget.loadingBuilder;
_lastException = null;
_lastStack = null;
ImageChunkListener onChunk = null;
if (loadingBuilder == null)
{
onChunk = _handleImageChunk;
}
ImageErrorListener onError = null;
if (widget.errorBuilder != null)
{
onError = error => {
setState(() => {
_lastException = error;
// _lastStack = stackTrace;
});
};
}
return(new ImageStreamListener(
onImage: _handleImageFrame,
onChunk: onChunk,
onError: onError
));
}
public ImageStreamListener(
ImageListener onImage,
ImageChunkListener onChunk = null,
ImageErrorListener onError = null
)
{
D.assert(onImage != null);
this.onImage = onImage;
this.onChunk = onChunk;
this.onError = onError;
}