selectAsset method

void selectAsset(
  1. A item
)

Select asset. 选中资源

Implementation

void selectAsset(A item) {
  if (selectedAssets.length == maxAssets || selectedAssets.contains(item)) {
    return;
  }
  final List<A> _set = List<A>.from(selectedAssets);
  _set.add(item);
  selectedAssets = _set;
}