final List data = shopCartAdapter.getData();
//要删除的数据
final List deleteEntities = new ArrayList<>();
for (MultipleItemEntity entity : data) {
final boolean isSelected = entity.getField(ShopCartItemFields.IS_SELECTED);
if (isSelected) {
deleteEntities.add(entity);
}
}
for (MultipleItemEntity entity : deleteEntities) {
int removePosition;
final int entityPosition = entity.getField(ShopCartItemFields.POSITION);
if (entityPosition > mCurrentCount - 1) {
removePosition = entityPosition - (mTotalCount - mCurrentCount);
} else {
removePosition = entityPosition;
}
if (removePosition <= shopCartAdapter.getItemCount()) {
shopCartAdapter.remove(removePosition);
mCurrentCount = shopCartAdapter.getItemCount();
//更新数据
shopCartAdapter.notifyItemRangeChanged(removePosition, shopCartAdapter.getItemCount());
}
}
这个地方删除，我代码都copy了还是出现部分item删除不了 removePosition = entityPosition - (mTotalCount - mCurrentCount);为什么要这样写呢，total好像一直0没有赋值过，相当于remove就是entity+mcuurent了，就出现部分删除不到，我尝试把total去掉，一个一个还可以删完，多选几个删就越界了，这块逻辑有点绕我画图罗列都没理清楚，麻烦老师在讲解下呢