优惠券没有可用时候也能进选择优惠券并显示空页面

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

@@ -4,6 +4,8 @@ import androidx.activity.viewModels
 import com.yidian.bcommon.constant.IntentConstants
 import com.yidian.bcommon.constant.XRouterPathConstants
 import com.yidian.bcommon.constant.XRouterPathConstants.Companion.CHOOSE_VOUCHER_ACTIVITY
+import com.yidian.bcommon.extensions.hide
+import com.yidian.bcommon.extensions.show
 import com.yidian.bcommon.mvvm.BaseMvvmActivity
 import com.yidian.shenghuoquan.buserorder.R
 import com.yidian.shenghuoquan.buserorder.adapter.VoucherAdapter
@@ -38,7 +40,14 @@ class VoucherActivity : BaseMvvmActivity<BorderActivityVoncherBinding, VoucherVi
         val list = params[IntentConstants.KEY_EXTRA_COUPON_LIST] as List<CouponDto>
         binding.rvVoucherList.addItemDecoration(SpaceItemDecoration(resources.getDimensionPixelSize(R.dimen.dp10)))
         binding.rvVoucherList.adapter = listAdapter
-        listAdapter.setList(list)
+        if (list.isNullOrEmpty()) {
+          binding.emptyView.show()
+          binding.rvVoucherList.hide()
+        } else {
+          binding.emptyView.hide()
+          binding.rvVoucherList.show()
+          listAdapter.setList(list)
+        }
       }
     }
   }

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

@@ -28,6 +28,7 @@ class ConfirmOrderViewModel : BaseViewModel() {
   var marketingName = MutableLiveData<String>()//活动名称
   var selectedCouponList = MutableLiveData<MutableList<CouponDto>?>()// 选中的优惠券
   var couponsAvailableList = MutableLiveData<List<CouponDto>?>()// 可用优惠券列表
+  var couponsAvailableNum = MutableLiveData<String>()// 可用优惠券数量提示
   var totalAmount = MutableLiveData(0.00)// 合计金额 = 原价 - 优惠
   var remark = MutableLiveData<String>()
 
@@ -84,11 +85,20 @@ class ConfirmOrderViewModel : BaseViewModel() {
       _goodsSuccessEvent.value = it.goodsList
       calculateOriginalAmount(it.goodsList)
       couponsAvailableList.value = it.couponList
+      calculateCouponsAvailableNum(it.couponList)
       // 上传页面埋点信息
       commitPageBuriedPoint()
     }
   }
 
+  private fun calculateCouponsAvailableNum(couponList: List<CouponDto>?) {
+    if (couponList.isNullOrEmpty()) {
+      couponsAvailableNum.value = "当前暂无可使用优惠券"
+    } else {
+      couponsAvailableNum.value = "${couponList.size} 张优惠券可用"
+    }
+  }
+
   /**
    * 计算商品原价 = 数量 * 单价
    */

Components/BUserOrder/src/main/res/layout/border_activity_confirm_order.xml

@@ -252,7 +252,6 @@
                         android:layout_height="wrap_content"
                         android:layout_marginTop="@dimen/dp8"
                         android:onClick="@{() -> vm.chooseVoucher()}"
-                        app:isShow="@{vm.couponsAvailableList.size() > 0}"
                         app:layout_constraintEnd_toEndOf="parent"
                         app:layout_constraintStart_toStartOf="parent"
                         app:layout_constraintTop_toBottomOf="@id/rv_goods_list">
@@ -282,7 +281,7 @@
                             android:paddingTop="@dimen/dp2"
                             android:paddingEnd="@dimen/dp5"
                             android:paddingBottom="@dimen/dp2"
-                            android:text="@{vm.couponsAvailableList.size() + @string/coupons_available_num}"
+                            android:text="@{vm.couponsAvailableNum}"
                             android:textColor="@color/white"
                             android:textSize="11sp"
                             app:isShow="@{vm.selectedCouponList.size() == 0}"

Components/BUserOrder/src/main/res/layout/border_activity_voncher.xml

@@ -38,5 +38,13 @@
             tools:itemCount="3"
             tools:listitem="@layout/border_voucher_item" />
 
+        <com.yidian.bcommon.widget.CommonEmptyPageView
+            android:id="@+id/empty_view"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:visibility="gone"
+            app:CommonEmptyPageView_empty_content_text="暂无优惠券"
+            app:CommonEmptyPageView_place_holder_img="@drawable/img_empty_place_holder" />
+
     </LinearLayout>
 </layout>
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