To ship the rest of the items, we just need to let the loop iterate again, since the activity that calls to the shipping component is at the start of the loop.
要发送其余的商品，我们只需再重复一次循环即可，因为调用发送组件的活动在循环的开始处。
2
The other way is to read it from the value binding that corresponds to the temporary loop variable, which is defined in the component tag's var attribute.
另一种方法是从对应于临时循环变量的值绑定中读取该数据，该变量定义在组件标记的var属性中。
3
Add your configured and value-bound component to the current column, and end your column loop iteration by adding the completed column to the children of the DataTable.