上拉加载自动定位到最底部

Components/BUserOrder/src/main/java/com/yidian/shenghuoquan/buserorder/ui/OrderListActivity.kt

@@ -15,6 +15,8 @@ import com.yidian.shenghuoquan.buserorder.app.adapter.OrderListAdapter
 import com.yidian.shenghuoquan.buserorder.utils.SpaceItemDecoration
 import com.yidian.shenghuoquan.buserorder.databinding.BorderActivityOrderListBinding
 import com.yidian.shenghuoquan.buserorder.viewmodel.OrderListViewModel
+import com.yidian.shenghuoquan.buserorder.viewmodel.OrderListViewModel.Companion.LOAD
+import com.yidian.shenghuoquan.buserorder.viewmodel.OrderListViewModel.Companion.PULL
 import com.yidian.xpage.XPageViewProtocol
 import timber.log.Timber
 
@@ -50,6 +52,7 @@ class OrderListActivity : BaseMvvmActivity<BorderActivityOrderListBinding, Order
       listAdapter = OrderListAdapter()
       binding.rcvOrderList.adapter = listAdapter
       listAdapter.setList(it)
+      setRecyclePos()
     })
   }
 
@@ -79,8 +82,16 @@ class OrderListActivity : BaseMvvmActivity<BorderActivityOrderListBinding, Order
       }
   }
 
-  private fun requestUserOrder() {
+  private fun setRecyclePos() {
+      when(vm._operationType) {
+        PULL -> {
+          binding.rcvOrderList.smoothScrollToPosition(1)
+        }
+        LOAD -> {
+          binding.rcvOrderList.smoothScrollToPosition(listAdapter.itemCount - 1)
+        }
 
+      }
   }
 
   override fun getXPageName(): String {

Components/BUserOrder/src/main/java/com/yidian/shenghuoquan/buserorder/viewmodel/OrderListViewModel.kt

@@ -11,15 +11,20 @@ class OrderListViewModel : BaseViewModel(){
     companion object {
       const val NORMAL = "NORMAL"
       const val REFUND = "REFUND"
+      const val PULL = "PULL"
+      const val LOAD = "LOAD"
     }
 
     private var orderList:MutableLiveData<List<OrderWebData>> = MutableLiveData<List<OrderWebData>>()
     var _orderList:LiveData<List<OrderWebData>> = orderList
     var _listType:String = NORMAL
+    var _operationType = PULL
     fun requestFreshUserOrder(param:HashMap<String, String?>) {
+      _operationType = PULL
       UserOrderListOperation.userOrderList(generateRereshParma(param), orderListCallBack)
     }
   fun requestLoadMoreUserOrder(param:HashMap<String, String?>) {
+    _operationType = LOAD
     UserOrderListOperation.userOrderList(generateLoadmoreParma(param), orderListCallBack)
   }
     private var orderListCallBack = object : OrderListCallBack {